I've been on it for four years, 5mg daily, taken each night. I've not had any dizziness or other ill effects while cycling (or doing anything else).
I'm on Ramipril 2.5mg daily too, as amlodipine by itself wasn't quite doing enough. BP is in the acceptable range although I don't have exact numbers to hand.
I'm 63 (in my head I'm loads younger).