Harvard Women's Health Watch
Do calcium supplements interfere with calcium-channel blockers?
Ask the doctors Q. Iíve just been prescribed the calcium-channel blocker Norvasc [amlodipine] for high blood pressure. I also take a 600-milligram calcium supplement every day for my bones. Will they cancel each other out? A. You donít need to worry about taking a daily calcium supplement with a calcium-channel blocker. In the body, calcium not only builds bones but also powers muscle contractions. Calcium-channel blockers lower blood pressure by