Can one get too much Ca/Mg? The capsules I have 1000 mg of calcium, 500 mg of magnesium and 200 IU of vitamin D. According to the website for Sportsleg each capsule has 131 mg of calcium, 65 mg of magnesium and 65 IU of vitamin D. Should I reduce the number of recommended capsules per dose (3-6 capsules daily)? I've not tried taking this before a ride. In all honesty, I often forget to take this supplement on a daily basis so I can't say that it has helped or hindered my performance on my bike. However, I do know my legs are tired and in addition to several days of R & R I need to add a supplement to help them meet the demands I'm placing on them.