I am on parole and took one 150mg ?
3 Feb 2013
Zantac (ranitidine) is well documented as providing a false positive result for amphetamines in urine drug screens.
If you have taken Zantac legitimately (on a doctors prescription) tell the drug testing personnel.
The half-life of Zantac is about 3 hours. This is the time it takes for the drug level in your plasma to be reduced by half. So half of the Zantac is out of your system in 3 hours, leaving half. Half of the remaining half is out in the next 3 hours leaving 1/4. Half of the remaining 1/4 is out in the next 3 hours leaving 1/8, etc.
As a rough estimate it usually takes around 5.5 half lives for a drug to be eliminated from your system. So 5.5 x 3 = 16.5 hours.
To be safe allow 24 hours for Zantac to be out of your system.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
2 answers • 12 Aug 2009
i have heard zantac will show up as meth. is there anything that will show up as methadone other than methadone? when testing for meth in a lab will ...
1 answer • 18 Sep 2009
i am pregnant, 33 weeks, and using zantad 150 as doctor's prescription. will zantac 150 have side effects regarding that?
1 answer • 27 May 2010