What Medications Can Cause A False Positive For Methamphetamine (Top voted first)

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Can certain over the counter medications or prescription medications cause a false positive for Methamphetamine in a blood test?

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11

I resent failed a drug test for meth, I'm pregnant and have been clean from drugs for 9 yrs. Could ranitidine the substitution for zantac cause a false positive

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7

I am helping my brother find a job. He took a urine test this morning and test postive for meth. He has not used meth in 8 years. It has been over a year since he smoked pot. He is not taking anything over the counter except Tums for heartburn. How could he test positive for meth? I want to believe him but it is hard.

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1

Information listed below is based on drug tests in general, whether it be urine, blood, saliva, or hair tests.

The following ingredients and meds can cause false positives for (Meth) amphetamines (from erowid):

Ephedrine, pseudoephedrine, propylephedrine, phenylephrine, or desoxyephedrine:
(Nyquil, Contact, Sudafed, Allerest, Tavist-D, Dimetapp, etc)

Phenegan-D, Robitussin Cold and Flu, Vicks Nyquil

Over-the-counter diet aids with phenylpropanolamine: (Dexatrim, Accutrim [note] this compound has since been banned for use in the US)

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

Asthma medications:
(Marax, Bronkaid tablets, Primatine Tablets)

Prescription medications:
(Amfepramone, Cathne, Etafediabe, Morazone, phendimetrazine, phenmetrazine, benzphetamine, fenfluramine, dexfenfluramine, dexdenfluramine, Redux, mephentermine, Mesocarb, methoxyphenamine, phentermine, amineptine, Pholedrine, hydroymethamphetamine, Dexedrine, amifepramone, clobenzorex, fenproyorex, mefenorex, fenelylline, Didrex, dextroamphetamine, methphenidate, Ritalin, pemoline, Cylert, selegiline, Deprenyl, Eldepryl, Famprofazone)

(Meth) amphetamines have a lot in common w/ many common stimulents/antihistimines/weight-loss meds and are probably more likely to show up as a false positive than any other drug.

Most drug screens test for metabolites that are shared by amphetamines and meth (as well as all those drugs mentioned). All of those can show false positives for meth in that regard. This may not be a complete list of medications and ingredients, but it is the biggest list I could locate.

I hope this helps!

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4

I go to a Pain Management doctor and they do a Urine Test each time you go in just to be sure you aren't doing anything you shouldn't. Today when I went the doctor told me that I tested positive for Crystal Meth! I have NO idea what that stuff even looks like! Here's what I take. Oxycodone for severe pain. Also, Rantinidine (generic for Zantac),Gaviscon (OTC for heartburn) and Mayloxx. Also Hydroxyz(generic for Atarax) for occasional severe nausea. That's it. The only thing different was that the day before my doctor's appointment I had to get a cavity filled and had the usual shot to numb my mouth. The doctor is sending the urine off for gas chromatography/mass spectrometry testing. I hope this doesn't also show up positive for something I've NEVER taken in my life! What do you think could have cause this? This could mean the difference of me losing a doctor that has actually HELPED me. I'm in less pain now than I have been in years!

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21

My roommate has tested positive for meth and is currently in jail due to a failed UIs. The medications he was prescribed and was taking before incarceration include:

-Prednisone- 5 Mg (1/M)
-Allopurinol - 300 Mg (1/M)
-Lisinopril - 20 Mg (1/M)
-Loratadine - 10 Mg (1/M)
-Aspirin 81 Mg (1/M)
-Fluticasone Prop 50 MCG Spray (1 spray each nostril/M)
-Cymbalta- 60 Mg (1/M)
-Cymbalta- 30 Mg (1/E)
-Crestor- 50 Mg (1/E)
-Trazadone 150 Mg (1/E (to 2/E if needed))
-Omeprazole- 20 Mg (1/E)
-Tamsulosin HCL- .4 MG (1/E)
-Carvedilol 3.135 Mg (1/M, 1/E)
-Brilinta 90 Mg (1/M, 1/E)
-Nitrostat 0.4Mg(1/150GR) SUBLT 25'S - (Take only for chest pain)
-oxyCODONE HCL 5Mg - (Take as needed for pain) -
Medical marijuana.

The oxyCODONE was prescribed after he was released from the hospital (stint implant surgery). His PO is stating he had multiple dirty UIs for Meth even before his surgery.

Does any of the meds, or combination of meds, cause a false positive for Meth? I support his claim that he did not take Meth. His behavior and outlook, prior to his arrest, has been exemplary and I saw no sign he was back on Meth.

Thank you so much for this help. I do not want my roommate to be unjustly incarcerated.

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13

i kep testing positive for Meth, even though i do not use the drug, the only other thing i am taking is Ranitidine(generic for Zantac) for my ulcer...could that be causing a false positive???

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9

I have read many different answers as to what could present a false positive for meth amphetamine. My question is could Tramadol also do this?

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6

my wife has been on CYMBALTA, a new drug since april 1and has fallen 3 or 4 times last per month and has radid blood pressure loss of cordination and hallucination bad not knowing me her husband. She takes 1800 mg of GABAPENTIN, BICODIN,1000MG METFORMIN, 200MG ANTRIPTYLINE, 100 MG LEVOTHYROXINE, 37.5 MG PHENTERMINE, 12 MG ONDANSETRON, 75 MG PROMETHAZINE, 25 MG HCTZ, .125 MG SYNTHROID, 100 MG DOXYCYCLINE, 40/25 MG BENICAR, 2 MG GLIMEPIRIDE, 40 MG FUROSEMIDE, 50 MG ATENOLOL. I concerned about SEROTONIN SYNDROME???? AND is it possible for her to get a false positive for amphetamine????

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10

i tested positive for meth i take adderall 30mg generic 100mg morphine xr 30mg morphine instant realase 2mg xanax 350 soma atarax 50 mg clartin d 24 hr abutarol inhaler plus septra 800-160 benedral

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42

Zantac/ranitidine can cause a positive for meth?
I take that daily but this is the first time I have had a positive for meth!
I was wondering if garcinia cambogia or green coffee bean extract could cause it?
That is the only thing different between this test and the last one. Oh, and a diuretic -

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23

i just failed a drug test yesterday. positive for meth. I have never used, let alone seen meth. I do take Zantac and other heartburn medicines and after reading all of these posts i can conclude that heartburn medicine will show up on a drug test as meth.

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5

I recently had 2 do a hair folicle test I haven't used meth 4 just over a year but 8 days b4 my test I was given a brownie 8 days later I was given a hair folicle test 5 days after my test the lab calls me asking me what prescrip pravastatin lisinopril I also tell her I've had bad allergies this year so I have been taking sudafed the lab seemed 2 o only care about my prescription drugs now I've always been under the understanding hydrocodonr apap 5 mg/500mg causes a dirty drug test as an opiate so when lab tech says I tested positive 4 meth only I assumed some my hydrcodone some didn't show just like the weed from brownies didn't show then tonight my friend tells me her hydrocodone caused a false positive 4 meth anyway I didn't the lab tech about my prescription 4 my hydrocodone cuz I'm already n trouble 4 the weed I didn't want 2 also get n2 trouble 4 my Vicodin cuz I tell the lab tech it is gonna b held against me by the company testing me so cuz I think a vicodin causes a postive 4 opiates so I thought it didn't show & now I hear my precipitation vicodin also can cause a false positive 4 meth so I gotta know is it true Vicodin cause a false positive 4 meth 2 & also based on the facts Ive given u how r my chances I'm gonna pass my hair folicle test

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8

I have a co worker who I trust that has come up positive for meth but has not used the drug. She is taking dextroamphetamine which I have found many web pages saying this drug can cause a false positive but they have mostly been someones post is there any reference material out there I could use to help.

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14

can taking citalopram and/or atenolol result in a positive testing for meth from hair folicle?

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12

I need all the help I CAN GET TO FIND OUT WHY I TESTED POSTITIVE FOR METH ,I TAKE ,ACETAMINOPHN,VALUIM,PHENTERMINE,DIPHENHYDRAMINE,MELOXICAM

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35

I just wanna know what I can use as an excuse to give my PO if I failed. Hell I did use Meth. I'm trying to research what I can blame my result on. I think I will go with otc sudafed, Afrin and zantac. Thanks for the info. Ill repost later and let u know if I got locked up. Oh BTW I am recovering. I relapsed. I used to use every day. I have only fallen off the wagon 2 times in a year. Judge me or not. At least I'm not lying to y'all!!! Lmmfao!

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20

Hi,
I am on Endone, Champix, Sudafed cold and flu tablets. How could this provide a fail for meth and amphetamines?

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24

i just failed a drug test yesterday. positive for meth. I have never used, let alone seen meth. I do take Zantac and other heartburn medicines and after reading all of these posts i can conclude that heartburn medicine will show up on a drug test as meth.

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17

albutural will cause it

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22

What if you are not taking any meds besides paxil20 mg and prilosec. I drink a little bit and smoke very little weed. That is absolutely everything. I got my head outta my ass and wanna be a better father. I ain't smoking no more weed but I will taste a little whisky here and there.

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