Can guinea pigs have powerade

No. Guinea Pigs can not have powerade. The only drink that guinea pigs are allowed to have is water. Any other drinks (especially Powerade, Gatorade, ...etc...) could potentially make them sick and/or kill them. I would highly recommend getting the book "Guinea Pigs (Animal Planet Pet Care Library) " which can be found at your local PetSmart or Petco. It will tell you all about keeping your Guinea Pig safe and healthy.