I am 68. My dr. prescribed Imdur 30 mg ER. I take the pill first in the morning no food. A halve of the day I feel so weak cant do anything. Usually I vigorously exercise and swim every other day. So I gradually quit. However some chest pain ( I think angina) comes back for3 to 5 minutes couple of times during the week.

However I think quitting my exercises and swimming IS WORST than quitting Imdur. (not mentioning other side effects from Imdur). Besides Imdur made in China and I heard of occasional recall.