I don't get hangovers anymore - FRS energy drink (NOT affliliated)

I got this free trial of an energy drink a while back, called FRS. I then got another order in the mail since I forgot to cancel the "trial". I think the business practices are a bit underhanded, since to return the product you have to jump through a bunch of hoops.

Anyways, because I got the next shipment and I didn't want to bother to send it back, I started taking this stuff regularly. I no longer have a hangover in the morning after a night of drinking - used to all the time.

The reason I think that this has had an effect is because I didn't take any for two days and went out drinking, lighter than normal, and woke with a bad one. Started taking it again, and went out hard one night - next morning I am a bit tired, but zero headache, nothing.

If anyone else has tried this stuff, let me know. If it really works then awesome.