Quote Originally Posted by DIANESDOGS
Oh my, heartworm?

I am glad he is on the road to recovery. After heartworm treatments, don't you have to stay on a maintenance dose for life?
If the heartworm is treated properly and tests negative in the end, then there is no 'maintainance dose' needed other than the normal heartworm preventatives all dogs need (ie heartgard, tri heart, interceptor etc).