got this in mail on fri, but i have been on antibiotics since tues and have taken no supps including prescription sleep aids since tuesday-this includes my beloved stims-the longest i have been of stims in years, lol....oh well, back to phenibut...ai also sent me a bunch of samples including sadly enough just 1 sample of 3z...last night i took the sample pack of 3z along with 2 phenibut, this combe worked really well- let me tell you it felt great to get some decent sleep!!!! what i am going to do is alternate phenibut with my prescrition sleep aids, this works out really well since if i take my scripts to often i build tollerance quickly-same applies to the phenibut!!! so tonight i will go with 4 caps of phenibut and then tomorrow i will use my scrpit and so forth.....i am a big fan of phenibut when used correctly!!!! it is tempting to want to use phenibut too often-this is not wise, imo!!!!