Product Description
Calcium and magnesium are the two minerals responsible for the contract-relax cycle that powers your muscles every day. They work as opposing forces inside every muscle cell you have, including the one in your chest keeping your heart rhythm steady.
Thorne's Calcium-Magnesium Malate pairs both minerals in a 1:1 ratio and a single capsule, so you're supporting bone and muscle health with two essential minerals in one balanced formula.
Supports the muscle contract-relax cycle directly – Calcium triggers muscle contraction while magnesium triggers relaxation, and having both minerals adequately available matters for how well that cycle functions.
Relevant to heart rhythm too – Since your heart is a muscle, the same contract-relax mechanism that affects your legs during a hard effort also plays a role in maintaining a steady heartbeat.
A simpler way to cover two minerals at once – A 1:1 calcium-to-magnesium ratio in one capsule, rather than needing to dose and balance two separate products.
Calcium plays a central role in bone mineralization, and research on well-absorbed calcium forms shows a consistent benefit for bone mass across age groups. Magnesium is involved in more than 600 enzymatic reactions throughout the body, well beyond its muscle-relaxing role, touching everything from nerve signaling to blood sugar regulation. The malate form used here is chosen for its absorption profile. Nutrition experts don't fully agree on the ideal calcium-to-magnesium ratio, with some literature favoring 2:1 and others favoring the 1:1 ratio used in this formula.
How to Use Thorne Calcium-Magnesium Malate
Dose: Take one capsule three times daily, or as recommended by your health-care practitioner. Taking it with food may improve comfort.
Gas, bloating, or diarrhea can occur in some people from the magnesium content and typically resolves at a lower dose. Excessive calcium intake over time has been linked to kidney stones and can impair absorption of other minerals, so stick to the suggested use unless your practitioner directs otherwise. Consult your health-care provider before use if pregnant, nursing, or trying to conceive.
- Gluten free
- Sport Tested: NSF Certified for Sport®
Supplement Facts
240 Servings
Serving Size: 1 Capsule
Serving Per Container: 240
| Amount Per Serving | ||
|---|---|---|
| % Daily Value* | ||
| Calcium (as Calcium Malate 100mg | ** | |
| Magnesium (as Magnesium Malate) 100mg | ** | |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Daily Value (DV) not established
Always Happy Promise: Don't like a product? Tell us within 30 days of receipt and we'll make it right and make you happy. Here at The Feed, we want you to love your experience and the sports nutrition products you purchase. If, for any reason, you are not satisfied with your nutrition specific purchase, tell us.
We do not accept returns on food items that have been opened, but we will issue a store credit if you are unsatisfied. In the event of a return, you must first contact us before sending back a return shipment.
Consumable products over $40 receive a 50% store credit. This includes specialty nutrition products such as ketones or supplements/vitamins.
Thorne Calcium-Magnesium Malate FAQ's
Everything you need to know about Thorne Calcium-Magnesium Malate.



Calcium triggers muscle contraction while magnesium triggers relaxation, so having both adequately available is what makes the full contract-relax cycle work well during training.
Yes. Since your heart is a muscle, the same contract-relax mechanism plays a role in maintaining a steady heartbeat, and magnesium alone is involved in more than 600 enzymatic reactions, including nerve signaling and blood sugar regulation.
Nutrition experts don't fully agree on the ideal ratio, with some literature favoring 2:1 and others favoring the 1:1 used here. This formula reflects the side of that debate favoring an even balance between the two minerals.
Take one capsule three times daily, or as recommended by your health-care provider. Taking it with food may improve comfort.
Some people experience gas, bloating, or diarrhea from the magnesium content, which typically resolves at a lower dose. Long-term excess calcium has been linked to kidney stones, so stick to the suggested use unless your practitioner directs otherwise.