BioStacksBest Calcium for Pregnancy
Top 6 products ranked
Clinical dose: 200–600 mg
Calcium and pregnancy
Calcium is a supporting nutrient for pregnancy support. Essential for bone structure, muscle contraction, nerve signaling, and blood clotting. Calcium citrate is better absorbed than calcium carbonate and can be taken without food, while carbonate requires stomach acid and should be taken with meals. Absorption efficiency drops significantly above 500 mg per dose—split doses are recommended.
What dose to look for
Clinical studies typically use 200–600 mg of calcium. Supplemental range; absorption drops sharply above 500mg/dose. Most adults get 700-900mg from food. Supplements that fall short of this threshold are unlikely to match what clinical trials achieved.
What form to look for
Avoid calcium carbonate — requires stomach acid to absorb. For best results, choose calcium citrate.
What the research says
The clinical evidence for calcium in pregnancy is strong. Large trials confirm bone density benefits; absorption drops above 500mg/dose, best paired with vitamin D and K2 Learn more
Thorne
Basic Prenatal, 90 Capsules
Mixed forms · 180 mg
Solgar
Prenatal Nutrients
Mixed forms · 1300 mg
Life Extension
Bone Restore with Vitamin K2
Mixed forms · 700 mg
Super Nutrition
Simply One, Prenatal Multivitamin with Super Greens, Spices, Vitamin A, and Folate, 90 Tablets
Mixed forms · 130 mg
Life Extension
BioActive Complete B-Complex
Mixed forms · 90 mg
Centrum
Centrum Women Multigummies
100 mg