I feel great and the only thing that slows me down a little is the Coreg. I hope I get a thumbs up for diving. Given the information that you have provided I would be very reluctant to allow you to dive. Immersion can cause divers with pre-existing heart problems to have incapacitating irregularities that could be fatal if they occur under water. This has been known to lead to heart failure under water.
Simple immersion can cause pulmonary edema in some people.
Imipramine is an antidepressant that can cause drowsiness and sedation in some people. This is adverse to diving. Plus, it has other serious side effects such as confusion, sun sensitivity and neurological symptoms that can be confused with a decompression accident. That Make You Sick. Reaching an ideal weight wasn't necessary.