Drink lots of extra water, take Tylenol PM(or generic) AND Aleve(or generic) right around the time you do your injection.

Do not freak out if you think you are having a seizure, it is just the chills anf flu-like symptoms...it might not happen to you but be prepared if it does.

Do not plan on doing anything the day after in case you get these side effects.

Hope it works for you, without the flu/hangover part.