I met with my neurologist yesterday, and we agreed to double my dose of isradipine from 2.5mg 2x/day to 5mg 2x/day.
I'm doing fine on it - no adverse reactions. And I'd started taking 5mg 2x/day about 2 weeks before my appointment so I could let her know how I felt on the increased dose. My BP is still fine. She said she'd had other patients ask about starting on it, but they had low BP already, so she couldn't prescribe it for them. Since I DO have hypertension, it isn't a problem.
Who would have imagined that having hypertension would be a good thing? Anyway, I'm going to stay at this dose for the next 5 months and see how I do. After that I will probably double the dose again.
She did say I seemed better now that I had when she last saw me - it's been quite a while - nearly a year. So it may be isradipine, or increased exercise, or both. (I never seem to change only one thing at a time.)