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Bone health; Muscle function; Nerve function; Electrolyte balance
Adults with low dietary intake of dairy or leafy greens and people with active lifestyles seeking daily mineral support.
Take 2 tablets daily, which may be split into 1 tablet twice daily; taking with meals can improve tolerance of minerals.
Vegetarian/Vegan; Kosher; Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut, or sesame ingredients.
Calcium serves as a structural mineral in bones and teeth and acts as an intracellular messenger for muscle contraction and nerve signaling.
Caution: Take with food if you experience stomach upset, and separate from high‑dose iron or certain thyroid medications because calcium can reduce their absorption.
Magnesium functions as a cofactor for enzymes involved in energy production and supports muscle and nerve relaxation, which is important for bone mineral balance.
Caution: May cause loose stools in some people; consider dividing doses or taking with food to improve tolerance.
Calcium provides the building blocks for bone tissue, while magnesium helps regulate calcium transport and utilization in muscles and bones. Together, they address structural needs and the enzymatic processes that influence mineral balance.
Label Warning: For adults only. Consult a physician if you are pregnant or nursing, taking medication, or have a medical condition. Natural color variation may occur.
Who should be cautious: People taking thyroid medications or certain antibiotics may need to separate calcium and magnesium doses by at least 2 hours due to reduced absorption. Those with kidney concerns or a history of kidney stones should discuss use with a healthcare provider. If combining with medications that may interact with calcium or magnesium, consult a healthcare provider before use.
Storage: Store in a cool, dry place after opening.
Many users mention feeling more energetic after adding it to their routine.
Customers say the clean, balanced formula does not cause stomach discomfort and is easy to take.
Some find the tablets big, though the smooth coating helps with swallowing for most.
This product is guaranteed authentic and backed by our easy returns & refunds policy. Details
Vitamin D3 and K2 may enhance calcium absorption and utilization, supporting bone health and strength. This combination may help maintain healthy bones and teeth.
AI generated. Not medical advice.
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NOW® Calcium & Magnesium combines two essential minerals that work together to maintain several critical physiological processes. They are both necessary for normal neural, muscular, and blood vessel function, as well as for the maintenance of proper bodily fluid balance. Calcium and magnesium also support the formation and maintenance of a healthy skeleton.
Take 2 tablets daily. Can be taken in divided doses.
Microcrystalline cellulose, hydroxypropyl cellulose, vegetarian coating [hypromellose (cellulose), calcium carbonate, polydextrose, glycerin, medium-chain triglycerides], stearic acid (vegetable source), croscarmellose sodium, silicon dioxide and magnesium stearate (vegetable source).
Made and quality tested in the USA with globally sourced.
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children.
Natural color variation may occur in this product.
Store in a cool, dry place after opening.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
| Supplement facts | ||
| Serving Size: 2 Tablets | ||
| Servings Per Container: 50 | ||
| Amount Per Serving | %Daily Value | |
| Calcium (elemental) (from Calcium Carbonate, Calcium Citrate, and Calcium Ascorbate) | 1 g (1,000 mg) | 77% |
| Magnesium (elemental) (from Magnesium Oxide, Magnesium Citrate, and Magnesium Ascorbate) | 500 mg | 119% |
