Make sure your vitamins and your SO's pills did not get mixed up! (If the cramps cycle every 28 days ...)

We don't have enough information to help. When are you getting the cramps? Before, during, after exercise? Weather? Type of exercise (sprints, endurance, etc)? Length of exercise? Frequency of exercise?

I have a thread in the long-distance forum about electrolyte supplements. I sweat salt and other electrolytes out so bad I was getting sick after a couple of hours. But I have never cramped.

More information will help us guide to finding the answer.

David