Be sure to read and follow all of the instructions. If you've raised the temps while medicating, you should lower it..but not very quickly. In fact, just because you don't see the spots, don't assume they're out of the woods.
Once some time has passed, (I forget if its more than 3 days so check the link info), you can add some scale coating (slime...I'm serious). This will come in a pet supply solution and allow the fish to heal and restore the natural slipperiness to its scales and close off any wounds and gill irritation.
Also be sure, that you are not adding too many fish to the tank and that you're siphoning the waste off the sand or material off the tank's bottom...quite regularly.
Lastly, feed them no live food as you can be introducing parasites.