Ok my sisters BF's betta is sick. Hes tried premifix and bettafix nothing is working. I just saw the little guy today. Hes still very active and eating well.

The problem is that hes got white spots on his body. The one on his head is growing biger. I think it may be a parisite but whats type of med should i get? Hes in a small betta bowl.

Maybe you should try Quick Cure or Aquari-Sol.

It's hard to say what it is. White spots could be lots of things. Check out some of the links that are stickied here in the Health Maintenance section.