A full report (from cardiologist or GP) should confirm that the BP has stabilised on acceptable treatment (for a minimum of 2 weeks) and that the pilot has no treatment-related side-effects.
The sentence is a little ambigous, I'm not sure if it means that you have to stay on the ground every time you're medicines are changed. If it does, then you won't see many grey haired pilots in the future.
AME's tend to ooze sensibility.
Enjoy your flying.
