Dosage · Supplement
Calcium: dosage and how to take it
≤500 mg per dose, with D and K2; citrate needs no acid.
- Overall grade
- Grade B
- Last revised
- 0
- graded outcomes
- 0
- references listed
Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.
The evidence in words
How much to take
Aim for ~1,000–1,200 mg/day total from all sources; supplement only the shortfall, in doses ≤500 mg at a time (absorption saturates). Citrate absorbs without stomach acid; carbonate needs food.
Timing & separation
Take Calcium apart from: Iron (Blunts iron absorption — separate.) · Levothyroxine (Binds thyroid hormone — separate by 4 hours.)
Why the dose is what it is
Beyond bone matrix, calcium ions trigger muscle contraction, nerve transmission, and clotting. Vitamin D governs its absorption and vitamin K2 governs where deposited calcium ends up.
Bottom line
Cover calcium from food if you can. If you supplement, keep single doses small, pair with vitamin D and K2, and don't chase megadoses — bigger is not safer here.
How it is used
As the entry records it, from the studies it summarises. Not a recommendation for you — doses that suit a trial population may not suit you.
- Top-up
- ≤500 mg per dose, with D and K2; citrate needs no acid.
Goes with
- CalciumFull Calcium monographEvidence grade B
Related reading
Entries that share this one's tags or conditions.
- Silicon: dosage and how to take itBioavailable orthosilicic acid daily.Evidence grade C
- Vitamin D: dosage and how to take it1,000–2,000 IU (25–50 µg) D3 daily with a fatty meal.Evidence grade A
- Vitamin K2: dosage and how to take it90–180 µg MK-7 daily with vitamin D and fat.Evidence grade B
- Algae Omega-3: dosage and how to take it250–1,000 mg EPA+DHA/day.Evidence grade B
Sources
This entry lists no references of its own — it is assembled from the entries it links to, whose sources are on their pages.
Last revised . A grade is this entry's reading of the evidence, not medical advice.