Moderate evidencemineral
Calcium for Muscle Cramps
Calcium is essential for the excitation-contraction coupling in muscle fibers. It triggers the actin-myosin cross-bridge cycle, and both deficiency and imbalance with magnesium can cause spontaneous, sustained muscle contractions (cramps).
How strong is the research?
Moderate evidence
Based on cohort study data — strong observational evidence.
How much to take
500–1000 mg
Take with vitamin D for absorption. Split into 500mg doses as the body absorbs calcium best in smaller amounts.
When to take it
Best taken: split