10 Perfectly Legal Substances That Can Result in a Failed Drug Test

2. Antibiotics

prescriptions

If you’re taking one of the newer generations of antibiotics such as ampicillin or amoxicillin, you can run into problems with drug testing. We all know antibiotics are not taken recreationally by anyone with more sense than a melon, but drug tests are not perfect (surprise, surprise!) and a false positive can be the result, so make sure you have your prescription bottle and doctor’s phone number on hand to prove you’re legit before you wiz in the little cup.