Now Calcium Citrate Review

NOW Calcium Citrate Tablets are meticulously formulated to provide comprehensive support for robust bone health, featuring a highly bioavailable form of calcium that is essential for maintaining strong skeletal integrity. This advanced bone metabolism formula extends beyond just calcium, incorporating a synergistic blend of vital minerals and Vitamin D. Specifically, the tablets include Vitamin D (as D2 Ergocalciferol), magnesium (from Magnesium Oxide and Magnesium Aspartate), zinc (from Zinc Bisglycinate), copper (from Copper Bisglycinate), and manganese (from Manganese Bisglycinate), all of which are recognized for their crucial roles in supporting healthy bone structure and overall function. The product is presented in an off-white tablet form, with the understanding that natural color variations may occur between batches. Each serving, consisting of two tablets, delivers 600 mg of Calcium derived from Calcium Citrate, alongside 10 mcg (400 IU) of Vitamin D, 300 mg of Magnesium, 15 mg of Zinc, 1 mg of Copper, and 5 mg of Manganese. These carefully selected ingredients are designed to work in harmony to optimize calcium absorption and utilization within the body, contributing to the maintenance of healthy bones. The suggested usage for adults is two tablets daily, preferably taken in divided doses with food. For optimal preservation of product quality and potency, it is recommended to store the bottle in a cool, dry place after opening. NOW Calcium Citrate Tablets adhere to stringent quality and safety standards, proudly bearing Halal, Kosher (Triangle K), Non-GMO, and Vegan certifications. Furthermore, the product is Intertek GMP Supplement Certified, ensuring manufacturing excellence and adherence to good manufacturing practices. This supplement is conscientiously formulated without common allergens; it is not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut, or sesame ingredients. However, it is important for consumers with severe sensitivities to note that it is produced in a GMP facility that also processes other ingredients containing these allergens. NOW Foods, a family-owned company since 1968, emphasizes sustainability, with the product bottle made from 100% PCR (post-consumer recycled) resin. All products are made and quality tested in the USA using globally sourced ingredients. As with all dietary supplements, a caution is advised for pregnant or nursing individuals, those currently taking medication, or individuals with a medical condition, who should consult a physician before use. Keep out of reach of children. It is important to note that these statements have not been evaluated by the Food and Drug Administration, and the product is not intended to diagnose, treat, cure, or prevent any disease.

Product Focus: Bone Health
Tier ⓘ
Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Biohacker Mentions
Cost per month
$12
Study, Trial or Testing Result SummaryMembersHuman studies

The match to this product is a two-year trial in 59 women past menopause. Calcium plus 15 milligrams of zinc, the same zinc amount as here, together with manganese and copper, stopped spine bone . …

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Review Totals and SummaryMembers10,947 reviews
10,947 reviews · IHerb 7,069 · Covenanthealthproducts 2,120 · Amazon 1,630 · Walmart 86 · Swanson Vitamins 22 · NOW Foods 5 · Kroger 5 · Fry's Food Stores 5 · Frysfood 5

With about 10947 ratings across various stores, "Now Calcium Citrate" generally receives very feedback, with of star-rated reviews giving it 4 or 5 stars. Customers appreciate its effectiveness and the availability of different forms to suit individual needs. **What buyers say it did for them** users find this calcium supplement "very effective" for supporting bone . …

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Biohacker SummaryMembersWhat our biohacker panel says

Reasons given include immune support, testosterone, mood and motivation through brain chemistry, sleep, and gut lining, and one panelist said a little zinc a patient with a joint condition. Forms and doses came up rarely: one panelist takes 15 mg in the morning for longevity, another uses zinc carnosine for the gut, and one pairs zinc with magnesium for sleep, while one a or said they stopped. …

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RAL SummaryMembersThe tier and why

A trial using the same zinc amount with calcium, manganese and copper also stopped spine bone . …

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More DetailsMembersBody systems · Combine with · Possible side effects

Body systems: Skeletal system. Combine with and possible side are for members.

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Supplement FactsVitamin D 10 50% · Calcium 600 46% · Magnesium 300 71%
Supplement Facts
Serving Size 2 Tablets
Servings Per Container 125
Amount Per Serving% Daily Value
Vitamin D (as D2 Ergocalciferol)10 50%
Calcium (from Calcium Citrate)600 46%
Magnesium (from Magnesium Oxide and Magnesium Aspartate)300 71%
Zinc (from Zinc Bisglycinate) (Albion™)15 136%
Copper (from Copper Bisglycinate) (Albion™)1 111%
Manganese (from Manganese Bisglycinate) (Albion™)5 217%

Other ingredients: Hydroxypropyl cellulose, vegetarian coating [hypromellose (cellulose), calcium carbonate, glycerin], croscarmellose sodium, silicon dioxide, magnesium stearate (vegetable source), citric acid, maltodextrin and stearic acid (vegetable source).

Directions: Take 2 tablets daily, preferably in divided doses, with food.

Barcode (UPC) 733739012326 · Label source: iHerb · Report a label change

Where to BuyNow · Amazon · iHerb
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Graded October 24, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.