I have been taking the infamous ECA stack on and off for years. Love the results once a tolerance to the sides is devolped. I have just recently started back on ECA and am being drug tested regularly for rec. drugs only. I am worried because I read (on several sites) that epherdrine can cause a false positive for anphetamines and the agency doing my drug testing would lock me up first and ask questions later if I end up failing a drug test. I am wondering if anyone has taken a drug test while on ephedrine and if so what were the results. Through my research i've only been able to find that ephedrine CAN cause a false positive, not how likely this is to occur. Maybe I am worried over nothing, I hope this is the case.

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