Been busy for a few days so just made it back here. I have not used that med as yet. After 5 days of the first medication and a couple of 50% water changes my Betta is looking and acting much better. I think I can see the hint of transparent new growth on his fins, especially the two long thin ones coming down from his "chin"?
I am now giving him a little stronger med, to be certain he heals up, it is Maracyn
Bow looks happy and active and starving all the time. I have to restrain from feeding him too much though as that is how I use to kill off my fish when I had an aquarium ages ago.