The pic of the bowl on top of your computer looks kind of like you have him in a space age water cooler LOL. He's pretty though! :)
I agree that you should hold off on medications unless you need them. Just pick up some Aquarium Salt. (something like this: http://www.petsmart.com/product/inde...uctId=10850845
They make a smaller box of it then this example though)
The other thing would maybe have some Epsom Salt around just in case. You can soak your feet in it, or add it to your bath, and there is a natural lawn tonic that uses this stuff as well. For your betta it is often used for constipation.
If you get the expensive medications they are often only good for 1 year then expire, and chances are they will probably expire before you need them.
Best wishes and welcome to the forum! :)