Effects - When will it end?

[Synesthesiac]

swim took a pill earlier with his mates. swim had one, they all had two. It is called TripTastic, and contains: Ingredients: Amino Acid Blend, Gelatin (Capsule Shell), 1-benzylpiperazine,
1-(3-trifluromethylphenyl) Piperazine, Caffeine, Vitamin B1,
Vitamin B5, Vitamin B6, Magnesium Stearate

The buzz is horrible. Paranoia. Unable to socialize. Friends have gone out now without swim as he wasn't feeling too well after it, they said they were feeling fine and had already come down, that was four hours ago. swim is still exactly the same as he was at the peak, pupils the size of saucepans, paranoid, scared (of nothing logical), numb and discolored hands, feel hot and clammy, keep burping huge amounts of gas every two minutes, and this is now eight hours after swim took it. swim has reacted very differently to everyone else for sure.

What should swim do to end this madness? How long does this crap usually last? So glad swim chose not to do two like everyone else did.