Dosage: I started with one pill a quickly moved up. I thought I was a non-responder till I took 5 pills. It's best to not take it more then two days in a row and ideally should be only used when needed.
Effectiveness: When I reached the dose I responded too I feel in love with phenibut. I feel super calm, relaxed, and best of all I can talk to anyone and in general makes the day better. The only downside is that tolerance builds fast(Even though I already have a natural tolerance and respond at the high dose of 2.5) and when you come off a weeks use it WILL throw your brain for a loop.
Value: I ended up going for the bulk 100g product after I used this because the amount I need. But having pills to avoid the nasty taste is a plus and most people should respond at a lower dose.