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We recommend Thorne Calcium because the dicalcium malate form reflects a considered formulation choice — not the cheapest option, but one our clinicians are comfortable recommending for patients with a confirmed dietary shortfall or bone health concern. Thorne's consistent approach to ingredient quality is why the brand earns its place in our nutrition protocols rather than simply filling a category gap.
About this product
Calcium (formerly DiCalcium Malate)
Thorne Calcium provides calcium in the form of dicalcium malate, a chelated compound in which calcium is bound to malic acid. Chelated forms are generally considered more soluble than calcium carbonate, which may support better absorption — a relevant distinction for anyone who has been told their dietary intake is insufficient or whose blood work suggests low bone mineral density risk.
Calcium is the primary mineral in bone tissue and plays a central role in skeletal maintenance throughout life. Beyond the skeleton, calcium is involved in muscle contraction, nerve signalling, and normal blood clotting. Most people obtain some calcium from dairy, fortified foods, or leafy greens, but requirements can outpace diet during adolescence, pregnancy, post-menopause, and in those following a vegan or dairy-free pattern.
This supplement suits adults looking to close a confirmed dietary gap rather than those self-supplementing without context. A blood or DEXA-informed approach is worth considering before starting, as excess calcium carries its own risks, particularly in those with a history of kidney stones or certain cardiovascular conditions.
Thorne is a brand with a reputation for formulation rigour and transparent ingredient selection, which is part of why it features across several of our doctor-led protocols. The use of dicalcium malate rather than cheaper carbonate forms reflects a deliberate formulation choice that aligns with what our clinicians look for in a calcium supplement.
What it does
Benefits
- 01
Supports bone mineral density maintenance in adults
- 02
Chelated malate form may aid calcium absorption
- 03
Relevant for dairy-free or vegan dietary patterns
- 04
Supports normal muscle contraction and nerve signalling
- 05
Suited to post-menopausal bone health protocols
Get the most from it
How to use
Take 2 capsules twice daily, as directed on the packaging. Calcium is generally better absorbed when taken in divided doses rather than a single large dose, so splitting intake across two sittings is sensible. Taking it with food may improve tolerance and absorption.
What's inside
Ingredients
View full ingredient list
Calcium (DiCalcium Malate)
Common questions
Frequently asked
How does dicalcium malate differ from calcium carbonate?
Calcium carbonate is the most common and inexpensive form, but it requires adequate stomach acid for absorption and can cause bloating in some people. Dicalcium malate is a chelated form bound to malic acid, which is generally considered more soluble and may be better tolerated, particularly for those with lower stomach acid.
Do I need to have a blood test before taking this?
It is worth knowing your baseline before supplementing calcium long-term. A clinician can assess dietary intake, relevant blood markers, and bone health risk factors to confirm whether supplementation is appropriate for you. Taking more calcium than needed — particularly without adequate vitamin D — is not without risk.
Can I take this alongside a vitamin D supplement?
Vitamin D supports calcium absorption in the gut, so the two are often used together in bone health protocols. Check with your clinician or GP if you are already taking a combined calcium and vitamin D product to avoid unintentional doubling up.
Who should be cautious about taking a calcium supplement?
Those with a personal or family history of kidney stones, hypercalcaemia, or certain cardiovascular conditions should speak to a doctor before starting. Calcium can also interact with some medications, including certain antibiotics and thyroid drugs, so check with your pharmacist if you are on prescription medicines.
How long before I might notice a benefit?
Bone mineral density changes slowly and is not something you will feel day to day. If you are supplementing to address a confirmed deficiency or support long-term bone health, consistent daily intake over months — combined with weight-bearing exercise and adequate vitamin D — is the relevant timeframe. Follow-up with a clinician or repeat DEXA scan is the only reliable way to track progress.
Doctor-guided care
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