well that depends on whos the salesperson...at my local GNC...the guy explained every detail on how to use it and thats AFTER i told him i need it for a drug test lmao...hes says it works but not all the time
NeedWeedNoww Reviewed by NeedWeedNoww on . GNC: Do not mention anything about a drug screen. If anything is mentioned about a drug screen, the sales person is instructed they are not allowed to sell any merchandise. Rating: 5