i found a bag of 3 capsules labeled "foo king ez" at a head shop. on the back of the bag it read "plant food pellets" the effects were very much like mdma. i researched this and found that it may be mephedrone. this worries me as i later found out that meph is derived from methcathinone and cathinone (a schedule I substance in the US) i had a drug test this morning and i am concerned of what the results might be. Anyone have any idea??