Here are hundreds of drugs that may cause a false positive on a drug test. In alphabetical order.

A

4-Way Nasal Spray - false positive for Amphetamines, Morphine

Accutrim (PHENYLPROPANOLAMINE - Dexatrim) - false positive for Ecstasy (MDMA), Meth

Acetaminoph w/codeine - false positive for Morphine

Acet-AM (Theophylline Calcium Glycinate) - false positive for Amphetamines, Heroin, Opiates

Acro-Lase Plus® contains barbiturates

Adam (slang) - may test positive for methamphetamine and ecstasy

Afrinol (Pseudoephedrine) - may test positive for amphetamines

A.P.C. w/codeine - false positive for Morphine

A.R.M. - false positive for Amphetamines

Aciphex (rabeprazole sodium) - PPIs may test positive for THC

Actifed (pseudoephedrine and triprolidine) - false positive for Amphetamines

Actifed with Codeine Cough Syrup®

Adderall - contains amphetamine, positive for Meth

Advil (Ibuprofen) - false positive for THC, Marijuana

Afrin (Oxymetazoline Nasal Spray) - false positive for Ecstasy (MDMA), Meth

Aleve (Naproxen) - false positive for THC, Marijuana

Alka-Seltzer Plus - false positive for Amphetamines, Morphine

Allerest - false positive for Amphetamines, Ecstasy, Meth and Morphine

Allobarbital - may test positive for Barbiturates

Alphenol - may test positive for Barbiturates

Alprazolam - contains benzodiazepines

Amantadine - may test false positive for amphetamines

Ambenyl - contains codeine

Amesec - false positive for Amphetamines, Heroin, Opiates

Amfepramone - false positive for Amphetamines, Ecstasy (MDMA), Meth

Amifepramone - false positive for Amphetamines and Ecstasy

Amineptine - false positive for Amphetamines and Ecstasy

Amitriptyline (including the trade names Elavil, Lentizol, Tryptizol, Triptafen, Triptafen-M) - false

positive for LSD

Amitriptyline - may test positive for Tricyclic Antidepressants (TCA)

Amobarbital - may test positive for barbiturates

Amogel PG® - contains opium/morphine

Amoxicillin - false positive for cocaine

Ampicillin - false positive for cocaine

Amisulpride - may show false positive for opioids

Amphetaminil - metabolizes to amphetamine

Ampicin - may cause false positive for opiates

Amytal - Positive for Barbiturates

Anaprox - false positive for THC, Marijuana

Ansaid - false positive for marijuana

Anti Anxiety medication, most - false positive for benzodiazepines

Anti Inflammatories - such as Naproxyn

Antiasthmatics that contain phenobarbitol - false positive for barbiturates

Antihistamines in general - false positives for Methadone

Antibiotics - false positives for Heroin, Cocaine

Antrocol Elixor® - contains barbiturates

Anxitol - may test positive for Benzodiazepines

Apo-Naproxen - false positive for THC, Marijuana

Aprobarbital - may test positive for barbiturates

Artane - false positive for LSD

Ascriptin w/codeine - false positive for Morphine

Aspirin with Codeine -

Asthma medications - false positives for Amphetamines and Ecstasy

Astramoprh PF® - contains morphine

Ativan® (lorazepam) - contains benzodiazepines

Atripla (Efavirenz) - false positive for cannabinoid THC

Avelox (Fluoroquinolone) - false positive for opiates

B

B-2 vitamin - false positive for THC

Bactrim - may test positive for benzodiazepines

Barbital - may test positive for barbiturates

Bayer Select Maximum Strength Sinus Pain Relief Caplets - false positive for Amphetamines

Bayer Select Pain Relief Formula - false positive for THC, Marijuana

Benadryl (Diphenhydramine) - false positives for benzodiazepines, PCP, tricyclic antidepressants

Benadryl (Diphenhydramine) - false positives for PCP

Bentyl® - false positive for LSD, Methadone

Benylin - false positive for Opioids

Benzatropine/Artane®

Benzedrine® - Amphetamines

Benzphetamine - false positives for Amphetamines, Ecstasy, and LSD

Biphetamine® - for Amphetamines

Black Pearls (Tung Sheuh pills) - contain benzodiazepines

Briantum - may test positive for benzodiazepines

Bromazepam (including the trade names Lexotan) - may test positive for benzodiazepines

Bromocriptine/Parlodel®

Bromocription - false positive for LSD

Bromphenlramlne - false-Positive for Amphetamine

Broncholate CS - contains codeine

Bronkaid - false positive for Amphetamines, Heroin, Opiates, Ecstasy, Meth

Bronkotabs - false positive for Amphetamines, Heroin, Opiates

Buprenex® - contains synthetic opiates

Buprenorphine - contains synthetic opiates

bupivacaine - may test false positive for cocaine

Bupropion (Wellbutrin, Zyban) - false positive for Amphetamines

Bupropion - may test false positive for MDMA (3,4-methylenedioxymethamphetamine)

Bupropion - may test false positive for amphetamine and MDMA

Buproprion - false positive for LSD

Buspirone - false positive for LSD

Butabarbital (including the trade names Butisol and Soneryl) - may test positive for Barbiturates

Butalbital (including the trade names Fioricet and Fiorinal) - may test positive for Barbiturates

Butisol - may test positive for Barbiturates

C

Cafergot® - false positive for LSD

Caldecon - false positive for Amphetamines, Morphine

Capital and Codeine Oral Solution - false positive for Opioids

Captagon® - metabolizes to amphetamine

Carbamazepine - false positive for Tricyclic Antidepressants (TCA) Other brand names of

Carbamazepine include Biston, Calepsin, Carbatrol, Equetro, Finlepsin, Sirtal, Stazepine, Telesmin,

Tegretol, EPITAB XR(Pakistan) Teril, Timonil, Trimonil, Epimaz, Carbama/Carbamaze (New Zealand),

Amizepin (Poland), Carzine (Kolkata), Mazetol, Tegrital, Tegrita (India), Karbapin (Serbia),

Hermolepsin (Sweden), Degranol (South Africa), and Tegretal (Chile, Germany).

Cathne - false positives for Amphetamines, Meth and Ecstasy (MDMA)

Centrax - may test positive for benzodiazepines

Cephradine - false positive for LSD

Cheracol - contains codeine

Cheracol Sinus - false positive for Amphetamines

Chinese herb pills - contain benzodiazepines

Chloroquine (Aralen®) - may test false positive for amphetamines

Chiorpromazlne - False-Positive for Amphetamine

Chlorazepate - Positive for Benzodiazepines

Chlordiazepoxide (Librium) - contains benzodiazepines

Chlordiazepoxide - may test positive for Benzodiazepines

Chlorpromazine (Thorazine) - false positive for Opiates (Also false for pregnancy)

Chlorpromazine (Thorazine) - may test false positive for PCP (l-phencyclohexylpiperidine,

Phencyclidine) 33)

Chlorpromazine - false positive for phenylketonuria, amylase, uroporphyrins, urobilinogen. May also

cause false positive pregnancy test.

Chlorpromazine - false positive for phencyclidine

Chlorpromazine - false positive for Tricyclic Antidepressants (TCA) and LSD

Chlorpromazine (Thorazine®) - may test false positive for amphetamines

Cipro (Fluoroquinolone antibiotic) - false positives for opiates

Cipro XR (Fluoroquinolone) - false positive for opiates

Clinafloxacin -

Ciprofloxacin extended-release (Fluoroquinolone) - false positive for opiates

Ciprofloxacin (Fluoroquinolone) - false positive for opiates

Clinoril - false positive for THC, Marijuana

Clobazam (Frisium) - may test positive for Benzodiazepines

Clobenzorex - false positives for Amphetamines and Ecstasy

Clonazepam - is a benzodiazepine

Clonazepam - may test positive for Benzodiazepines

Clonopin - may test positive for Benzodiazepines

Clorazepate - may test positive for Benzodiazepines

Coca tea, Coca leaf, Coca flour, Coca oil - positive for cocaine

Co-codamol - positive for opiates

Codafen - positive for opiates

Codafen - may test positive for opiates

Codafen Continus - Positive for Opiates

Codeine - false positives for Amphetamines

Codeine - will test positive (not false) for opiates

Codeine Linctus - tests positive for opiates

Codeine Phosphate (Codafen Continus, Codeine Linctus, Pediatric BP, Galcodine, Kapake, Migraleve,

Solpadol, Tylex) – tests positive for opiates

Codinal PH® - contains codeine

Co-dydramol - positive for opiates

Cold remedies with dextromethorphan - positive for opiates (heroin)

Comtrex - false positive for Opioids

Contac - false positive for Amphetamines, Morphine

Contac Severe Cold Formula - false positive for Morphine

Contact - false positives for Amphetamines, Meth and Ecstasy

Contact Non-Drowsy Formula Sinus Caplets - false positive for Amphetamines

Control - false positive for Morphine

Co-proximal - may test positive for Propoxyphene (PPX)

Coproximal - Positive for Propoxyphene

Cough medicines - See if any ingredients are on this list

Cough suppressants with Dextromethorphan (DXM) - false positive for Heroin (MDMA)

Cows head pills (Chinese herb) - contain benzodiazepines

Cramp End Tablets - false positive for THC, Marijuana

Cremacoat 4 - false positive for Morphine

Cyclimorph - positive for opiates

Cyclobenzaprine - false positive for Tricyclic Antidepressants (TCA)

Cylert - false positives for Amphetamines and Ecstasy

Cyproheptadine - false positive for Tricyclic Antidepressants (TCA)

D

Dalmane® - contains benzodiazepines

Darvocet - may test positive for Propoxyphene (PPX)

Darvon - may test positive for Propoxyphene (PPX)

Darvon® - contains synthetic opiates

Darvon - Positive for Propoxyphene

Datril - false positives for Marijuana

Daypro - false positives for benzodiazepines

Deconsal - contains codeine

Delorazepam (Briantum) - may test positive for benzodiazepines

Demerol - tests positive for opiates

Demetrin - may test positive for benzodiazepines

Deprenyl - false positives for Amphetamines and Ecstasy

Desipramine - false positives for LSD

Desipramine (Norpramine®) - may test false positive for amphetamines

Desoxyephedrine - false positive for Amphetamines and Ecstasy

Desoxyn - may test positive for methamphetamine

Desoyn® - contains d-methamphetamine

Dexamphetamine Sulphate - Positive for Amphetamine

Dexatrim - false positive for Ecstasy (MDMA), Meth

Dexdenfluramine - false positive for Amphetamines and Ecstasy

Dexedrine - is an Amphetamine

Dexedrine - may test positive for amphetamines

Dexfenfluramine - false positive for Amphetamines

Dexlansoprazole - PPIs may test positive for THC

Dextroamphetamine - false positive for Amphetamines

Dextroamphetamine - may test positive for amphetamines

Dextromethorphan (DXM) - false positive for Heroin, Opiates, Morphine

Dextromethorphan - may test false positive for PCP

Dextromethorphan hydrobromide or DXM - false positives for amphetamines

Dextropropoxyphene - may test positive for Propoxyphene (PPX)

DHC - may test positive for opiates

DHC Continus - Positive for Opiates

DHEA - false positive for anabolic steroid use

Diabetes - false positives for Amphetamines, Cocaine, THC, Ecstasy, Meth and Opiates

Diabismul® - contains opium/morphine

Diazemuls - may test positive for Benzodiazepines

Diazepam (Diazemuls, Stesolid, Valclair, Valium) - false positive for PCP

Diazepam (generic name for Valium) - contains benzodiazepines

Diazepam Diazemuls - Positive for Benzodiazepines

Diazepam - may test positive for Benzodiazepines

Didrex - false positive for Amphetamines

Didrex - metabolizes to methamphetamine and amphetamine

Diet aids with phenylpropanolamine (Dexatrim, Accutrim) - false positive for amphetamines

Dietac - false positive for Morphine

Dihydrocodeine (DHC Continus, Paramol, Remedeine, Remedeine Forte) - may test positive for

opiates

Dihyrocodeine - contains synthetic opiates

Dilantin - false positives for Barbiturates

Dilaudid - may test positive for opiates

Dilaudid® - contains synthetic opiates

Diltiazem - false positive for LSD

Dimetane-DC Cough Syrup ® - contains codeine

Dimetapp - false positive for Amphetamines

Dimetapp - false positive for Morphine, Meth, Ecstasy

Note: Dimetapp is a brand name of the generic drug loratadine, which is also sold under the brand

names Claritin, Alavert, Claritin Reditab, Claritin Hives Relief, Clear-Atadine, Clear-Atadine Children's,

Loratadine Reditab, Ohm Allergy Relief, Tavist ND, Wal-itin, and Dimetapp ND.

Dimethylamphetamine - metabolizes to methamphetamine and amphetamine

Dimethylamylamine - false positive for amphetamines

Dinintel® - metabolizes to amphetamine

Diocalm - may test positive for opiates

Diphenhydramine - false positive for phencyclidine

Diphenhydramine - false positive for Tricyclic Antidepressants (TCA)

Diphenhydramine (Benadryl) - false positive PCP results

DMAA (dimethylamylamine) - false positive for amphetamines

d-Methamphetamine - HCL may test positive for methamphetamine

Doco children's cough syrup - false positive for Opioids

Dolobid - false positive for THC, Marijuana

Dolophine - may test positive for methadone

Dolophine® - contains synthetic opiates

Donnagel-PG ® - contains opium/morphine

Donnatal - may test positive for barbiturates

Donnatal® - contains barbiturates

Donnatol (for irritable bowel syndrome) - false positive for barbiturates

Dormonocet® - contains benzodiazepines

Doxepin - false positive for LSD

Doxepin - may test positive for Tricyclic Antidepressants

Doxylamine - false positive for phencyclidine, PCP, angel dust

Dristan Cold caplets - false positive for Amphetamines

Dristan Cough Formula - false positive for Heroin, Opiates, Morphine

Dronabinol (Marinol) - shows positives for THC, marijuana

Duramorph - positive for opiates

Duramorph® - contains morphine

Durophet® - Amphetamines

E

E (slang) - may test positive for methamphetamine and ecstasy

Edecrin - false positive for THC, Marijuana

Efavirenz - false positive for THC, Marijuana

Efavirenz (Sustiva®) - may test positive for THC

Effexor Tablets (venlafaxine hydrochloride) - false positive for PCP

Effexor XL - Potential Positive for PCP

Efidac/24 - false positive for Amphetamines

Efotamine - false positive for LSD

Elavil - false positives for opiates for up to three days, LSD, Methadone

Elavil - Positive for Tricyclic Antidepressants

Eldepryl - false positive for Amphetamines and Ecstasy

Elderpryl® - metabolizes to methamphetamine and amphetamine

Empirin w/codeine - false positive for Morphine, Opioids

Emprin with Codeine® - false positive to opiates

Enoxacin - false-positive for opiates

Entersan - may test positive for opiates

Ephedra - false positives for Amphetamines and Ecstasy

Ephedrine - false positive for Amphetamines, Meth, and Ecstasy

Ephedrine-based compounds - false positives for Amphetamines and Ecstasy

Ephedrol, Ephedra (Ma Haung) - false positive for Amphetamines, Heroin, Opiates

Ergostat® - false positive for LSD

Esomeprazole - PPIs may test positive for THC

Estasule Minus - false positive for Amphetamines, Heroin, Opiates

Estazolam - may test positive for Benzodiazepines

Etafediabe - false positive for Amphetamines, Meth and Ecstasy

Ethylamphetamine - metabolizes to amphetamine

Ethylmorphine - may test positive for opiates

Eve (slang) - may test positive for amphetamines

Excedrin IB - false positives for Marijuana (Cannabis) THC

F

Factive (Fluoroquinolone) - false positive for opiates

Famprofazone - false positive for Amphetamines and Ecstasy

Feldene - false positives for THC

Fencamine - metabolizes to methamphetamine and amphetamine

Fenelylline - false positive for Amphetamines and Ecstasy

Fenfluramine - false positive for Ecstasy

Fenfluramine (Fen Phen) - may test false positive for amphetamines

Fenoprofin - false positive for Marijuana, Amphetamines, Barbiturates

Fenproporex - metabolizes to amphetamine

Fenproyorex - false positive for Amphetamines and Ecstasy

Fentanyl - false positive for LSD

Finedal® - metabolizes to amphetamine

Fioricet - may test positive for Barbiturates

Fioricet with Codeine® - false positive to opiates

Fiorinal - may test positive for Barbiturates

Fiorinal known to produce a false positive for phenobarbital

Fiorinal w/codeine - false positive for Morphine

Floxin (Fluoroquinolone) - false positive for opiates

Flunitrazepam - may test positive for Benzodiazepines

Fluoroquinolone antibiotics - false positive for opiates

Fluoxetine (Prozac) - false positives for amphetamines and LSD

Flurazepam - contains benzodiazepines

Flurbiprofen - false positive for marijuana

Fluriprofen® - Fluroquinolones (Levaquin®) - may test false positive for opiates

Fluspirilene - may test positive for amphetamines

Frisium - may test positive for Benzodiazepines

Furfenorex - metabolizes to methamphetamine and amphetamine

G

Galcodine - may test positive for opiates

Galenphol - may test positive for opiates

Gamanil - may test positive for Tricyclic Antidepressants

Gatifloxacin -

Gemifloxacin (Fluoroquinolone) - false positive for opiates

Genpril - false positive for THC, Marijuana

Gradumet® - contains d-methamphetamine

H

Halcion - Positive for Benzodiazepines

Haloperidol - false positive for LSD

Haltran - false positive for THC, Marijuana

Hamantashen - may test positive for opiates.

Hempseed Oil (Cannabis Seed/Hemp Oil) - false positive for THC

Hold Cough Suppressant - false positive for Heroin, Opiates, Morphine

Homatropine Methylbromide - contains synthetic opiates

Hycodan® - contains synthetic opiates

Hydergine - false positive for LSD

Hydrocodone - false positive for oxycodone

Hydrocodone Bitartrate - contains synthetic opiates

Hydrocodone - contains synthetic opiates

Hydrocodone - may test positive for opiates

Hydromorphone (Dilaudid®) - contains synthetic opiates

Hydromorphone - may test positive for opiates

Hydromorphone (Dilaudid®) - may test false positive for oxycodone

Hydrostat - may test positive for opiates

Hydroymethamphetamone - false positive for Amphetamines

I

Ibuprin - false positive for marijuana

Ibuprofen - false positive for Marijuana (THC)

Ifenoprofen - false positive for THC, Marijuana

Imitrex Hydergine® - may test false positive for LSD

Indocin - false positive for THC, Marijuana

Indocin - could affect urine drug test results

Infantol Pink ® - contains opium/morphine

Infumorf - contains morphine

Isoclor Expectorant - contains codeine

K

Kaoden with Codeine® - false positive to opiates

Kaodene with Paregoric® - contains opium/morphine

Kapake - may test positive for opiates

Kenesed® - contains barbiturates

Kapidex - PPIs may test positive for THC

Ketamine - false positive for PCP

Ketoprofen - false positive for THC

Kidney disease - false positive for Cocaine

Kidney infection - false positive for Amphetamines, THC, Ecstasy, and Opiates

Klonopin - may test positive for Benzodiazepines

Klonopin® - contains benzodiazepines

Koalin and Morphine Mixture - may test positive for opiates

L

Labetolol - false positive for LSD

Lansoprazole - PPIs may test positive for THC

Lerisum - may test positive for Benzodiazepines

Ketipinor (quetiapine) - false-positives for amphetamines

Labetalol (Labetalol) - may test false positive for amphetamines

Lamotrigine (Lamictal®) - false positive for PCP

Lentizol - Positive for Tricyclic Antidepressants

Lerisum - Positive for Benzodiazepines

Levaquin® (Fluoroquinolone) - false positive for opiates

Levofloxacin (Fluoroquinolone antibiotic) - false positives for opiates

Lexotan - may test positive for benzodiazepines

Libritab® - contains benzodiazepines

Librium - may test positive for Benzodiazepines

Librium® - contains benzodiazepines

Limbitrol® - contains benzodiazepines

Lisuride - false positive for LSD

Lisuride/Dopergin® - Liver Disease - false positive for Opiates, Ecstasy, THC and Amphetamines

l-Methamphetamine HCL - may test positive for methamphetamine

Lodine - false positive for THC, Marijuana

Lofepramine - may test positive for Tricyclic Antidepressants

Lomefloxacin – positive for opiates

Lomont - may test positive for Tricyclic Antidepressants

Loprazolam - contains benzodiazepines

Loratab - may test positive for opiates

loratadine (Dimetapp) - false positive for Amphetamines

Lorazepam - contains benzodiazepines

Lorazepam - may test positive for Benzodiazepines

Lorcet - may test positive for opiates

Lormetazepam - may test positive for Benzodiazepines

Lortab - an opioid analgesic

Love Drug (slang) - may test positive for amphetamines

Luminal - may test positive for barbiturates

Luminal® - contains barbiturates

Lysergol - false positive for LSD

M

Ma Huang (Ephedra sinica) - false positives for Amphetamines and Ecstasy

Marax - false positive for Ecstasy (MDMA), Meth

Margestic - false positive for Opioids

Marinol® - shows positive for Marijuana (THC)

Maximum Strength Sine-aid - false positive for Amphetamines

Maximum Strength Sudafed Sinus - false positive for Amphetamines

Maximum Strength Tylenol Sinus gelcaps - false positive for Amphetamines

Meclomen - false positive for THC, Marijuana

Medacepan - may test positive for Benzodiazepines

Medazepam - may test positive for Benzodiazepines

Medipren - false positive for THC, Marijuana

Mediprim - false positive for marijuana

Mefenorex - false positive for Amphetamines and Ecstasy

Menstrual cramp medications - like Midol and Trendar

Meperidine - false positive for phencyclidine

Mephentermine - false positive for Amphetamines and Ecstasy

Mesocarb - false positive for Meth and Ecstasy

Methadone - contains synthetic opiates

Methadone Hydrochloride - tests positive for methadone

Methadose - may test positive for methadone

Methamprex - may test positive for methamphetamine

Methedrine - may test positive for methamphetamine

Methoxyphenamine - false positive for Amphetamines and Ecstasy

Methphenidate - false positive for Amphetamines and Ecstasy

Methyldopa - may test positive for amphetamine

Methylenedioxyamphetamine (MDA) - may test positive for amphetamines

Methylenedioxymethamphetamine (MDMA) - may test positive for methamphetamine and ecstasy

Methylphenidate (Ritalin) - an Amphetamine-like stimulant

Methysergide/Sansert® -

Methysergiside - false positive for LSD

Metoclopramide - false positive for LSD (

Mexiletine (Mexitil®) - may test false positive for amphetamines

Midol - false positive for THC, Marijuana

Migraleve - may test positive for opiates

Mini-thins - false positives for Amphetamines and Ecstasy

Minocycline - can cause false positive results with certain urine tests.

Miracle herb pills (Chinese herb) - contain benzodiazepines

Mogadon - may test positive for benzodiazepines

Morax - false positive for Amphetamines, Heroin, Opiates

Morazone - false positive for Meth and Ecstasy

Morcap - positive for opiates

Morphine Sulfate, including the trade names Astramorph, Cyclimorph, Duramorph, Morcap, MS

Contin, Oramorph, Roxanol, and Severedol - positive for opiates

Motrin - false positive for THC, Marijuana

Moxifloxacin (Fluoroquinolone) - false positive for opiates

MS Contin - positive for opiates

MS Contin Tablets® - contain morphine

MSIR® - contains morphine

Mudrane GC® - contains barbiturates

N

Naldecon - false positive for Morphine (1)

Nalfon - false positive for Marijuana, Amphetamines, Barbiturates, Benzodiazephines, Methaqualone

Naprosyn - false positive for THC, Marijuana

Naproxen (Aleve) - false positive for THC, Marijuana

Naproxyn – positive to barbiturates and cannabinoid

Nasal sprays (Vicks inhaler, Afrin) - false positive for Amphetamines and Ecstasy

Navonaprox - false positive for THC, Marijuana

Nembutal - may test positive for barbiturates

Nembutal Sodium - contains barbiturates

Neosynephren - false positive reading for Amphetamines

Neosynephrine - False positive for Amphetamines

Nexium - PPIs may test positive for THC

Nitrazepam - may test positive for benzodiazepines

Nobritol - may test positive for Benzodiazepines

Nobrium - may test positive for Benzodiazepines

Noctamide - may test positive for Benzodiazepines

Nonprescription products that contain opium - (i.e., morphine)

Norcyclobenzaprine - false positive for Tricyclic Antidepressants (TCA)

Norflex - false positive for Morphine

Norfloxacin (Fluoroquinolone) - false positive for opiates

Noroxin (Fluoroquinolone) - false positive for opiates

Novahistine DH® - contains codeine

Novahistine Expectorant® - contains codeine

Novocain - may test positive for Opiates

NSAIDS - false positive for THC, Marijuana

Nucofed Expectorant - contains codeine

Numorphan® - contains synthetic opiates

Nuprin - false positive for THC

Nyquil - false positive for Amphetamines, Heroin, Opiates, Morphine, Meth, Ecstasy, Methadone

O

Obetrol® - Amphetamines

Ofloxacin (antibiotic) - false positives for opiates

Omeprazole - PPIs may test false positive for THC

Opazimes - may test positive for opiates

Oramorph - positive for opiates

Oramorph - contains morphine

Ornade - false positive for Amphetamines

Ortain - false positive for Amphetamines

Orudis KT - false positives for THC

Orudis® - false positives for THC

OTC diet aids with phenylpropanolamine - (Dexatrim, Accutrim)

Over-the-counter nasal sprays - (See Vicks inhaler, Afrin)

Oxaprozin - false positive for THC, Marijuana, Benzodiazepines

Oxaprozin (Daypro?) - may test false positive for benzodiazepines

Oxazepam - contains benzodiazepines

Oxazepam - will test positive for benzodiazepines (not false)

Ox-pam - may test positive for benzodiazepines

Oxycodone (Oxycontin) - contains synthetic opiates

Oxymorphone - contains synthetic opiates

Oxymorphone (Numorphan) - may test false positive for oxycodone

P

Pamprin® - false positive for THC, Marijuana

Pantoprazole (Protonix) - false positive for THC

Papaverine (Papaverine) - may test false positive for opiates

Paracetamol (Acetaminophen)/Codeine -

Paracetamol with codeine - positive for opiates

Paracodine® - contains synthetic opiates

Paramol - may test positive for opiates

Paregoric - contains opium/morphine

Par-Glycerol-C (CV) - contains codeine

Pavacol-D - may test positive for opiates

Pedacare - false positive for Opioids

Pediacof® - contains codeine

Pediatric - may test positive for opiates

Pediatric BP - Positive for Opiates

Pefloxacin - false positive for Opiates

Pemoline - false positive for Amphetamines and Ecstasy

Pentobarbital - may test positive for barbiturates

Pentobarbital Sodium - contains barbiturates

Percocet - will test positive (not false) for opiates

Percodan - contains Oxycodone

Percodan® - contains synthetic opiates

Percovil - will test positive (not false) for opiates

Perphenazine - false positive for Tricyclic Antidepressants (TCA)

Perylamine - false positive for Amphetamines

Phenaphen with Codeine® -

Phendimetrazine - false positive for Amphetamines and Ecstasy

Phenegan-D - false positive for Amphetamines, Ecstasy (MDMA), Meth

Phenergan VC® - contains codeine

Phenergan with Codeine® - positive for opiates

Phenergan® - false positive for THC, Methadone

Phenergan-D -false positive for Amphetamines

Phenmetrazine - false positive for Amphetamines and Ecstasy

Phenobarbital - contains barbiturates

Phenobarbital - may test positive for barbiturates

Phenobarbital - may cause false-positive phentolamine test results.

Phenobarbitone - may test positive for barbiturates

Phenteramine - false positives

Phentermine - false positive for Amphetamines and Ecstasy on urine tests

Phentermine - cross reactant for methamphetamine

Phenylephrine - false positive for Amphetamines

Phenylephrine - false positive for Amphetamines

Phenylpropanolamine - false positive for amphetamines

Phenylpropanolamine (PPA) - false positive for Meth

Phenypropanolamine - false positive reading for Amphetamines

Phenytoin (Dilantin®) - may test false positive for barbiturates

Pholcodine - may test positive for opiates

Pholedrine - false positive for Amphetamines, Meth and Ecstasy

Physetone - may test positive for methadone

Poly-Histine - contains codeine

Pondinil® - metabolizes to amphetamine

Poppy Seeds contain morphine - positive for Heroin (MDMA), Opiates

Potentsex pills (Chinese herb) - contain benzodiazepines

Prazepam - may test positive for benzodiazepines

Prenylamine - metabolizes to amphetamine

Preparations - positive for opiates

Prescription medications that contain codeine – positive for opiates

Prescription NSAIDS – false positive to barbiturates and cannabinoid

Prescription sleeping pills - may test positive for Benzodiazepines

Prevacid - PPIs may test positive for THC

Prilosec - PPIs may test positive for THC

Primatene-M – positive to methamphetamine

Primatine Tablets - false positive for Ecstasy (MDMA), Meth

Primidone (Mysoline®) - may test false positive for barbiturates

Procainamide (Procainamide) - may test false positive for amphetamines

Procaine - Positive for Opiates

Prochlorperazine - false positive for LSD

Promethazine - false positive for THC

Promethegan - false positive for THC

Propanolamine – false positive to amphetamine

Propoxyphene - contains synthetic opiates

Propranolol (Inderal®) - may test false positive for amphetamines

Propylephedrine - false positive for Amphetamines and Ecstasy

Proquin XR (Fluoroquinolone) - false positive for opiates

ProSom - may test positive for Benzodiazepines

Proton pump inhibitors - false positive for THC

Protonix - false positive for THC

Prozac (Fluoxetine Hydrochloride) - false positives for amphetamines

Pseudoephederine (Claritin-D®/Sudafed®) - false positives for amphetamines and ecstasy

Pseudoephedrine - may be detected as amphetamines (speed)

Pseudoephedrine - may test positive for amphetamines

Pseudoephedrineare - false positive for amphetamines

Purim cookies - contain poppy seeds, false positive for opiates

Pylorid - may test positive for methamphetamines

Q

Quadrinal® - false positive for Amphetamines, Heroin, Opiates

Quelichine - false positive for Amphetamines, Heroin, Opiates

Quelidrine - false positive for Amphetamines, Heroin, Opiates

Quetiapine (Seroquel) - false positive for amphetamines

Quibron Plus - false positive for Amphetamines, Heroin, Opiates

Quinine in Tonic water - positive for opiates

Quinacrine (Atabrine/Mepacrine) - may test false positive for amphetamines

R

Rabeprazole - PPIs may test positive for THC

Ranitidine - may show false positive for Amphetamines

Ranitidine - may test positive for methamphetamines

Rantidine (Zantac®) - may test false positive for amphetamines

Redux - false positive for Amphetamines, Meth and Ecstasy

Relafen - false positive for Marijuana

Remedeine Forte - may test positive for opiates

Remedeine - may test positive for opiates

Remedine - positive for opiates

Rescudose - contains morphine

Restoril (Temazepam) - is a benzodiazepine

Rexatal® - contains barbiturates

Riboflavin (vitamin B2) - false positive for THC

Rifampicin (antibiotic) - false positive for Opioids

Rifampin - false positive for Opiates

Risperidone - false positive for LSD

Ritalin® - an Amphetamine-like stimulant

Rivotril - may test positive for Benzodiazepines

Rivotril® - contains benzodiazepines

Robitussin - positive for opiates

Robitussin A-C® - contains codeine

Robitussin Cold and Flu - false positive for Ecstasy (MDMA), Meth

Robitussin DAC® - contains codeine

Robitussin DM - false positive for Heroin, Opiates, Morphine

Rohypnol - may test positive for Benzodiazepines

Romilar - false positive for Heroin, Opiates, Morphine

Roxanol - positive for opiates

Roxanol - contains morphine

Roxicet - contains Oxycodone

Rufin - false positive for THC, Marijuana

S

Secobarbital - contains barbiturates

Secobarbital - may test positive for barbiturates

Secobarbital Sodium Bellergal-S® - contains barbiturates

Seconal - may test positive for barbiturates

Seconal Sodium - contains barbiturates

Selegiline (Eldepryl) - false positive for Meth, Amphetamines and Ecstasy

Sensorcaine - may test false positive for cocaine

Serax - may test positive for benzodiazepines

Serax® - contains benzodiazepines

Seroquel (quetiapine) - false-positives for amphetamines

Sertraline - false positives for benzodiazepines and LSD

Sertraline - may test positive for benzodiazepines

Sinarest - false positive for Amphetamines, Morphine

Sine-Aid Tablets Maximum Strength – amphetamine false positive

Sine-Off - false positive for Morphine

Sinequan - may test positive for Tricyclic Antidepressants

Sinex - false positive for Amphetamines

Sinubid - false positive for Morphine

Sinus Excedrin Extra Strength Caplets - false positive for Amphetamines

Solfoton® - contains barbiturates

Solpadol - positive for opiates

Solpadol - may test positive for opiates

Soma - false positive for Morphine

Soma with Codeine – false positive to opiates

Somnite - may test positive for benzodiazepines

Soneryl - may test positive for Barbiturates

Sparfloxacin – false positives for opiates

St. Joseph's Cough Syrup - false positive for Heroin, Opiates, Morphine

Stesolid - may test positive for Benzodiazepines

Strong BP - may test positive for opiates

Suboxone (Buprenorphine) - may test false positive for oxycodone

Sudafed - false positive for Amphetamines, Meth

Sudafed - may test positive for amphetamines

Sustiva (Efanirenz) - false positive for THC or Marijuana

Sustiva - may test positive for THC

Synalgos DC® - contains synthetic opiates

T

Tavist-D - false positive for Meth and Ecstasy

Tedral - false positive for Amphetamines, Heroin, Opiates

Tegisec® - metabolizes to amphetamine

Temazepam (Restoril) - is a benzodiazepine

Thebacon - may test positive for opiates

Thioridazine (Mellaril) - false positive for phencyclidine (PCP) and LSD

Thioridazine - false positive for Tricyclic Antidepressants (TCA)

Thorazine - false positives

Tolectin® - false positive for THC, Marijuana

Tonic water - false positive for cocaine

Tranxene - may test positive for Benzodiazepines

Trazodone (trazadone, trazedone) - false positive for amphetamines

Trazodone - false positive for LSD

Trendar Cramp Relief Formula - false positive for THC, Marijuana

Triaminic 12 - false positive for Amphetamines

Triaminic Expectorant with Codeine® - false positives for opiates

Triaminicin - false positive for Amphetamines, Morphine

Triazolam (Halcion) - Positive for Benzodiazepines

TriazolamHalcion® - contains benzodiazepines

Tricyclic antidepressants - may produce false-positive results for amphetamines

Trimethobenzamide - false positives

Trimeprazine - false positive for Tricyclic Antidepressants (TCA)

Triminicol - false positive for Morphine

Triprolidine - false positive for LSD

Triptafen - Positive for Tricyclic Antidepressants

Triptafen-M - Positive for Tricyclic Antidepressants

Trucal - false positive for Heroin, Opiates, Morphine

Tryptizol - Positive for Tricyclic Antidepressants

Tuinal - Positive for Barbiturates

Tussagesic - false positive for Morphine

Tussaminic - false positive for Heroin, Opiates, Morphine

Tussar 2® - contains codeine

Tussar SF® - contains codeine

Tussinic - false positive for Heroin, Opiates, Morphine

Tussi-Organiden - contains codeine

Tylenol (acetaminophen) with Codeine®

Tylenol 3 - may cause positive for opiates

Tylenol 3 - positive for opiates

Tylenol 4 - may cause positive for opiates

Tylenol Cold (combination) - may test positive for amphetamines

Tylenol Simply Sleeps (Diphenhydramine) - false positive PCP results

Tylenol Sinus - false positives for Amphetamines and Ecstasy

Tylenol Sinus gelcaps, Maximum Strength - false positive for Amphetamines

Tylenol with codeine - Positive for Opiates

Tylex - positive for opiates

Tylex - may test positive for opiates

U

Tramadol (Ultram) - may test false positive for phencyclidine (PCP) and methadone

Unisom Nighttime Sleep Aid - false positive for Morphine

V

Valclair - may test positive for Benzodiazepines

Valerian Root and extract - false positives for Benzodiazepines

Valium - may test positive for Benzodiazepines

Valium® (Diazepam) - contains benzodiazepines

Valrelease® - contains benzodiazepines

Venlafaxine hydrochloride (Effexor) - false positive for PCP

Verapamil - false positive for LSD

Vicks Cough Syrup - false positive for Heroin, Opiates, Morphine

Vicks Formula 44M - false positive for heroin, Methadone

Vicks Inhaler - false positive for Ecstasy (MDMA), Meth

Vick's Inhaler - may test positive for methamphetamine

Vicks Nasal Spray - may test positive for amphetamine

Vicks Nyquil - false positive for Ecstasy (MDMA), Meth

Vicodin ES® - contains synthetic opiates

Vicodin - may test positive for opiates

Vitamin B2 - false positive for THC

Vivacaine - may test false positive for cocaine

Voltaren (diclofenac, Cataflam, Arthrotec(combined with misoprostol)) - false positive for THC,

Marijuana

W

Wellbutrin - false positive for Amphetamines

Wigraine® - false positive for LSD

Wygesic - will test positive (not false) for opiates

X

Xanax - Positive for Benzodiazepines

Xanax® (Niravam, Alprazolam) - contains benzodiazepines

Xepin - may test positive for Tricyclic Antidepressants

XTC (slang) - may test positive for methamphetamine and ecstasy

Z

Zantac (ranitidine) - may test positive for methamphetamines

Zantac (ranitidine) - may test positive for amphetamines

Zegerid - PPIs may test positive for THC

Zoloft - may test false positive for benzodiazepines

Zoloft - may test positive for benzodiazepines

Zyban - may cause a false positive for amphetamines

Zyrtec-D - contains pseudoephedrine that may cause a false positive for amphetamines

 

https://ozdrugtesting.com.au/wp-content/uploads/2020/08/Here-are-hunderds-of-drugs-that-may-cause-a-false-positive-on-a-drug-test.pdf

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