I’m posting this in the steroids because you guys would know more about drug-testing.
I registered in a natural competition and the rules state that:
Each of ephedrine and methylephedrine is prohibited when its concentration in urine is greater than 10 micro grams per milliliter.
Now how much ephedrine would you need to take for it to show 10 micro grams per milliliter in your urine? and how long does ephedrine take to clear out of your system? Any help is appreciated.