10 Best Calcium Supplement For Osteoporosis of 2025

Tested and Reviewed: Top 10 Calcium Supplement For Osteoporosis deals with expert ratings from 8.1 to a perfect 10

April 2025 Edition

Editor's Choice

9.7

ALGAECAL

ALGAECAL Plus - Plant Based Calcium Supplement- Vitamin D3 (1600 IU) & K2 (100 mg), Calcium (720 mg) Magnesium (350 mg) + 12 Other Nutrients for Bone Health & Strength, 120 Veggie Caps, Made in USA

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Editor's bottom line:

“This calcium supplement for osteoporosis is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Increase Bone Density: AlgaeCal Plus, a clinically supported plant-based calcium supplement for improved bone health. From organic algae with 13 bone-supporting minerals. In addition to calcium (720mg), each serving includes magnesium, potassium, boron, manganese, vanadium, phosphorus, copper, zinc, nickel, strontium, silicon, and selenium with vitamins D3, K2-Mk7, & C.
Plant Based: traditional calcium citrate supplements are sourced from quarries. But AlgaeCal is a plant-based calcium that naturally contains all 16 of the clinically supported nutrients - like magnesium and vitamin D - to support bone health and support fracture healing. And because its plant-based, its gentle on the body.
Tested and approved: AlgaeCal is recommended by bone health experts to reduce the risk of fractures due to bone loss. Promotes bone strength with 16 nutrients essential for healthy bone density. AlgaeCal is the ideal plant based calcium for women and men with low bone density.
Complete formula: AlgaeCal Plus contains 16 nutrients for bone health. 13 bone-building minerals plus vitamin D3 for calcium absorption. Vitamin K2-Mk7 to direct calcium to your bones, and vitamin C to fight the root cause of bone loss. Together, these 16 nutrients are clinically supported to increase bone density and represent a new chapter in bone strength.
Manufactured in USA & Recyclable: AlgaeCal is manufactured in the USA. Our calcium capsules are veggie-based. Easy to swallow. Dairy free. Soy free. Gluten free. Non-GMO. And our packaging is recyclable. Suitable for women and men who want to increase bone strength in a way thats safe, natural, and clinically supported.

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Picked by 287 people today

9.5

New Chapter

New Chapter Calcium Supplement - Bone Strength Organic Calcium with Magnesium, Vitamin D3+K2, 70+ Trace Minerals for Bone Health, Gluten Free, Easy to Swallow Slim Tablets - 120 Count

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Main Highlights

3-IN-1 BENEFITS: Supports bone density and normal bone creation (and supports teeth health), supports cardiovascular health, and healthy joint support*
ORGANIC CALCIUM: USDA Organic plant-based calcium bone density supplement from sustainably harvested Red Marine Algae is backed by 27 studies and includes magnesium and 70+ naturally occurring trace minerals*
FORMULATED FOR ABSORPTION: We believe the best calcium supplements are easily recognized and absorbed by the body, so ours is expertly formulated with fermented Vitamin D3 for better absorption & K2 to direct calcium to bones (where you need it most); an alternative to calcium citrate
EASY TO SWALLOW: Slim calcium tablets for bones with slow & steady release
USDA Organic, Non-GMO Project Verified, 100% Vegetarian, Certified Kosher, Certified Gluten Free by NSF, Sustainably Harvested from Iceland

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9.5

Pure Encapsulations

Pure Encapsulations Calcium (Citrate) - Supplement for Bone, Teeth, Colon, and Cardiovascular Health Support* - with Premium Calcium Citrate - 180 Capsules

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Main Highlights

Heart Health: Highly absorbable calcium, which supports cardiovascular health.*
Colon Health: Calcium has been associated with supporting colon health; support colon health with these calcium citrate supplements*
Bone Support: Calcium Citrate is a highly bioavailable calcium supplement, providing support for bone, cardiovascular, colon, and joint health*
Pure Quality: Our supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity.
Pure Difference: What makes us different isn't just our process or what goes into our supplements -- what we leave out matters, too. Pure Encapsulations products are free from wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives.

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9.2

NATURELO

NATURELO Calcium Supplement - with Vitamin C, Vitamin D3, K2, and Calcium Magnesium Zinc for Bone Strength with Calcium 600mg - Plant-Based, 120 Vegetarian Capsules, Non-GMO, Soy & Gluten-Free

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Main Highlights

CALCIUM MAGNESIUM ZINC D3 SUPPLEMENT: NATURELO Bone Strength is a calcium, magnesium and zinc supplement enriched with plant-based nutrients to support bone health*, including Calcium sourced from marine algae and Vitamin D3 from lichen.
VITAMIN ENRICHED CALCIUM MAGNESIUM SUPPLEMENT: Offering a comprehensive bone health nutritional formula - this calcium and magnesium supplement contains essential vitamins such as Vitamin D3, K2, and C, plus Zinc and other minerals to support bone density* and maintain bone health.*
ABSORPTION: This Magnesium Zinc Calcium Supplement is designed to support calcium absorption in the body, with the inclusion of Vitamin D3, Magnesium, and Vitamin K2, to help effectively directing calcium towards the bones.
CALCIUM 600 MG WITH VITAMIN D3: Our calcium 600 mg with Vitamin D3 supplement helps support bone health* especially important in later life stages, and in women who tend to lose more bone mass during perimenopause and menopause.
CLEAN AND NATURAL: As a clean-label, non-GMO calcium and Vitamin D supplement, these special vitamins for bone strength have no unnecessary additives. Free from gluten, dairy, nuts, preservatives and artificial coloring, this magnesium, calcium, zinc supplement is suitable for vegans and vegetarians.
FROM NATURE WITH LOVE: We believe nutrition should come from nature not a laboratory. We formulate our supplements using only the cleanest, most bioavailable ingredients whenever possible to harness the power of plants for whole food nutrition.

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9.0

CITRACAL

Citracal Slow Release 1200, 1200 mg Calcium Citrate with Vitamin D (1000 IU), Vitamin D3, Bone Health Support, Calcium Supplement for Ages 12+, 185 Count

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Main Highlights

DEFY BONE AGING: Our calcium supplement includes 1200 mg of Calcium Carbonate and Calcium Citrate and high levels of Vitamin D per serving to help support bone health* as part of your overall wellness and fitness regimen; just 2 caplets a day
IMPORTANCE OF CALCIUM: This essential mineral is needed for bone health; Slow Release 1200 is made with Calcium Carbonate & Calcium Citrate. Adequate calcium & vitamin D throughout life, as part of a well-balanced diet, may reduce the risk of osteoporosis
WITH VITAMIN D3 AND MAGNESIUM: 25 mcg (1000 IU ) Vitamin D3 helps to absorb dietary calcium; also contains 80 mg of magnesium. Suggested Age: 12 Years and Up
SLO-CAL TECHNOLOGY: Slowly and continuously releases small amounts of calcium for efficient absorption in one daily dose
#1 CALCIUM BRAND RECOMMENDED: Citracal is the #1 Doctor & Pharmacist (1) recommended calcium brand (1)Pharmacy Times Survey, 2023

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8.8

PrimeMD

4-in-1 Calcium Supplements for Women and Men - Calcium 600mg with Vitamin D3 K2 5000 IU Supplement for Heart, Bone and Body Defenses - Gluten-Free, Vegan-Friendly (120 ct)

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Main Highlights

Who's this for - Our calcium supplements for women & men are for those looking for support with calcium absorption & distribution in the body. Its for anyone who wants to reinforce their calcium-rich diet.
What are the ingredients - Our calcium supplement is enriched with D3 vitamin 5000 IU, vitamin K2, 600mg Calcium, 1000 mcg of Vitamin B12 and BioPerine. It's vegan, gluten-free & has no fillers.
What are the benefits - This 4-in-1 formula activates the matrix GLA protein to bind excess calcium and promote arterial flow & flexibility. Get holistic health support for the heart, bones and body.
How it works - Vitamin D3 supports calcium absorption, Vitamin K2 supports proper distribution of calcium, Calcium supports bones & muscle function while Vitamin B12 supports nerve function.
How to take - Adults should take 2 capsules daily with a meal and a glass of water. For best results, take at least 60 days. These calcium capsules have 601.25mg per capsule.

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8.6

Caltrate

Caltrate Minis 600 Plus D3 Plus Minerals Calcium and Vitamin D Supplement Tablets, Bone Health and Mineral Supplement for Adults - 150 Count

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Main Highlights

150 count bottle of Caltrate Minis 600 Plus D3 Plus Minerals Calcium and Vitamin D Supplement Tablets
Dual benefit bone support supplements include calcium and vitamin D3 for bone strength and minerals for flexibility (2, 3)
Caltrate Plus Minerals supplement includes key essential minerals like zinc, copper and manganese to help support collagen production to facilitate more resilient bones (2)
Caltrate calcium and vitamin D supplements have the most vitamin D3 to help your body maximize calcium absorption (1, 2)
Caltrate calcium and vitamin D3 tablets contain 600 mg calcium carbonate and 40 mcg of vitamin D3 per two mini tablets

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8.3

BioSchwartz

Bone Strength Calcium Supplement - with Calcium, Vitamin D3, K2, C, Magnesium, Zinc - 8 Bone Health Nutrients, High Absorption, Non-Constipating Dietary Supplement Formula - 120 Veggie Capsules

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Main Highlights

Comprehensive bone health formula: BioSchwartz ultra pure bone strength features key bone building nutrients including Vitamin K2, Calcium and Vitamin D3 for bone support
Optimal absorption: BioSchwartz ultra pure bone strength includes magnesium to assist in calcium absorption, an essential mineral for bone health
Purity tested & allergen free: Each and every batch of BioSchwartz ultra pure bone strength are third party tested to guarantee high purity, potency, and quality. This formula has been manufactured without GMOS, soy, gluten, milk, egg, wheat, peanuts, or shellfish. They also don't include preservatives, artificial ingredients, fillers, chemicals or color additives
Formulated by professionals: Each one of BioSchwartzs professional grade supplements is created by a team of highly experienced healthcare professionals in the USA following strict GMP guidelines to ensure the greatest benefits are achieved

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Best Value

8.1

Save 16%

CITRACAL

Citracal Slow Release 1200, 1200 mg Calcium Citrate with Vitamin D (1000 IU), Vitamin D3, Bone Health Support, Calcium Supplement for Ages 12+, 80 Count

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Main Highlights

DEFY BONE AGING: Citracal Slow Release 1200 is a calcium supplement; 1200 mg of Calcium Carbonate and Calcium Citrate and high levels of Vitamin D per serving to help support bone health* as part of your overall wellness and fitness regimen; just 2 caplets a day
IMPORTANCE OF CALCIUM: This essential mineral is needed for bone health; Slow Release 1200 is made with Calcium Carbonate and Calcium Citrate. Adequate calcium and vitamin D throughout life, as part of a well-balanced diet, may reduce the risk of osteoporosis
WITH VITAMIN D3 AND MAGNESIUM: 25 mcg (1000 IU ) Vitamin D3 helps to absorb dietary calcium; also contains 80 mg of magnesium. Suggested Age: 12 Years and Up
SLO-CAL TECHNOLOGY: Slowly and continuously releases small amounts of calcium for efficient absorption in one daily dose
#1 CALCIUM BRAND RECOMMENDED: Citracal is the #1 Doctor & Pharmacist (1) recommended calcium brand (1)Pharmacy Times Survey, 2023

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Our Best Overall Choice

Best Choice

9.7

ALGAECAL

ALGAECAL Plus - Plant Based Calcium Supplement- Vitamin D3 (1600 IU) & K2 (100 mg), Calcium (720 mg) Magnesium (350 mg) + 12 Other Nutrients for Bone Health & Strength, 120 Veggie Caps, Made in USA

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Increase Bone Density: AlgaeCal Plus, a clinically supported plant-based calcium supplement for improved bone health. From organic algae with 13 bone-supporting minerals. In addition to calcium (720mg), each serving includes magnesium, potassium, boron, manganese, vanadium, phosphorus, copper, zinc, nickel, strontium, silicon, and selenium with vitamins D3, K2-Mk7, & C.
Plant Based: traditional calcium citrate supplements are sourced from quarries. But AlgaeCal is a plant-based calcium that naturally contains all 16 of the clinically supported nutrients - like magnesium and vitamin D - to support bone health and support fracture healing. And because its plant-based, its gentle on the body.
Tested and approved: AlgaeCal is recommended by bone health experts to reduce the risk of fractures due to bone loss. Promotes bone strength with 16 nutrients essential for healthy bone density. AlgaeCal is the ideal plant based calcium for women and men with low bone density.
Complete formula: AlgaeCal Plus contains 16 nutrients for bone health. 13 bone-building minerals plus vitamin D3 for calcium absorption. Vitamin K2-Mk7 to direct calcium to your bones, and vitamin C to fight the root cause of bone loss. Together, these 16 nutrients are clinically supported to increase bone density and represent a new chapter in bone strength.
Manufactured in USA & Recyclable: AlgaeCal is manufactured in the USA. Our calcium capsules are veggie-based. Easy to swallow. Dairy free. Soy free. Gluten free. Non-GMO. And our packaging is recyclable. Suitable for women and men who want to increase bone strength in a way thats safe, natural, and clinically supported.

Show Price

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