Can grapefruit juice help you pass a urine test for meth?

When taking one of these medications and drinking grapefruit juice, the grapefruit inhibits the metabolism of these drugs (i.e. it is hogging the enzyme all to itself in the liver and not leaving any for the medication so it can't be broken down). The result is having too much of the medication in your body, which can lead to toxicity. read more

The first thing you should do is work out if you'll pass without doing anything. Meth actually leaves the body quite quickly, so it can only be detected in saliva for 1-3 days after use and in urine for 3-5 days. read more