10 Best Organic Calcium Supplement of 2025

Last updated on 08/18/2025

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Plant-Based Calcium 500mg (Aquamin) – Vegan Calcium Magnesium Zinc D3 with Vitamin K2 & Organic Turmeric – Enhanced Bone and Muscle Health & Strength, Immune Support for Women & Men - 90 Count

SUPPLEMENTS STUDIO

Plant-Based Calcium 500mg (Aquamin) – Vegan Calcium Magnesium Zinc D3 with Vitamin K2 & Organic Turmeric – Enhanced Bone and Muscle Health & Strength, Immune Support for Women & Men - 90 Count

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Natural ingredients for optimal health.
Superior absorption for easy digestion.
No fillers, pure ingredient trust.

Main Highlights

Plant-Based Calcium Magnesium Complex: Unlike traditional calcium supplements, ours is made with sustainably harvested red marine algae, providing natural calcium, magnesium, and rich in 13+ essential minerals for superior absorption & easy digestion.
7-in-1 Bone Health Complex: Magnesium and vitamin D3 are essential for calcium bioavailability. Zinc enhances magnesium absorption, while vitamin K2 directs calcium to the bones. Turmeric supports active lifestyle and overall wellness, and black pepper improves nutrient bioavailability.
For Women & Men: Calcium supports bone health and strength, while magnesium contributes to normal muscle and nerve function. Combined with turmeric, this formula is designed to help maintain optimal wellness. Zinc plays a role in bone formation, and Vitamin D3 assists calcium absorption to support overall wellness.
No Fillers: Crafted with your health in mind, our calcium magnesium supplement delivers high-potency benefits without the unwanted extras. Free from fillers like rice flour and magnesium stearate, so you can trust what you're putting into your body.
Proudly Made in the U.S.: All our supplements are manufactured with rigorous quality control standards and strict adherence to current Good Manufacturing Practices (cGMP). Made with high quality natural and vegan non-GMO ingredients.

Garden of Life Calcium Supplement with Magnesium & Organic Vitamin D3 K2, Made from Whole Foods, Gluten-Free, 180 Count

Garden of Life Calcium Supplement with Magnesium & Organic Vitamin D3 K2, Made from Whole Foods, Gluten-Free, 180 Count

Plant-based ingredients enhance health.
Easily digestible for maximum absorption.
Third-party certified for quality assurance.

Main Highlights

VEGAN HIGH PROTEIN SHAKE: Raw Fit is designed to enhance your diet & exercise program, empowering you to boost energy, lose weight and build lean muscle mass, with 28g organic plant based protein per serving from Peas and Sprouted Grains, Seeds & Legumes
FIGHT CRAVINGS: Smooth tasting vegan protein powder with 4 grams of Organic Fiber to satisfy hunger and help you stay full longerÑplus a Superfood Blend with Organic Baobab Fruit, Organic Cinnamon, Organic Daikon Radish Sprout & Organic Alfalfa Sprout
THE PERFECT FIT: Our nutritional meal replacement shakes provide high quality, whole food ingredients and less than 1g of sugar per serving; Mix a scoop of delicious Fit powder in water or unsweetened almond milk for a pre or post workout protein boost
CLEAN PROTEIN: We love creating the cleanest products possible; That's why Raw Organic Fit powders are Third-Party tested and Certified USDA Organic, Non GMO, Vegan, NSF Gluten Free, Kosher & Certified for Sport by Informed Choice

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

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

Supports bone and joint health.
Organic and sustainably sourced.
Formulated for optimal absorption.

Main Highlights

STAY STRONG FOR LIFE: Clinical-strength dose of calcium with K2 & D3 supports bone density and normal bone creation, strong teeth, cardiovascular health, and healthy joint support.*
ORGANIC CALCIUM: USDA Organic plant-based calcium bone density supplement from wild 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 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 bone support with slow & steady release
USDA Organic, Non-GMO Project Verified, 100% Vegan, Certified Kosher, Certified Gluten Free by NSF, Harvested from Iceland

Garden of Life Raw Calcium Supplement for Women and Men - Vitamin Code Made from Whole Foods with Magnesium, K2, Vitamin D3 and Vitamin C, for Bone Strength, Probiotics for Digestion, 120 Capsules

Garden of Life Raw Calcium Supplement for Women and Men - Vitamin Code Made from Whole Foods with Magnesium, K2, Vitamin D3 and Vitamin C, for Bone Strength, Probiotics for Digestion, 120 Capsules

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Plant-based, sustainably sourced calcium.
Supports healthy bones and joints.
Raw, natural ingredients for digestion.

Main Highlights

ALGAECAL PLUS NATURALLY OCCURRING TRACE MINERALS: Calcium is essential; Raw Calcium is the first raw, plant-based formula with 1100mg of AlgaeCal Raw, a certified organic nature made calcium with trace minerals
ALGAE SOURCED CALCIUM MAGNESIUM BONE AND JOINT SUPPLEMENT: 357mg of algae sourced Magnesium for normal muscle and nerve function and a healthy immune system; this approach supplies highly absorbable magnesium as nature intended
VITAMIN K, D AND C FOR IMMUNITY: Vitamin D helps the body absorb calcium; Raw Calcium delivers a K2 D3 combination of 1,600 IU Raw Food-Created vitamin D3 plus 50mcg Vitamin K2 as MK7, along with 50mg of Vitamin C for immune support
LIVE PROBIOTICS AND DIGESTIVE ENZYMES: Vitamin Code Raw Calcium also provides a Raw Probiotic and Enzyme blend with hardy strains like L. bulgaricus, and digestive enzymes like Lipase and Protease, to help support absorption and healthy digestion
BONE UP WITH UNTREATED, UNADULTERED, AND UNCOOKED RAW NUTRIENTS - Vitamin Code Raw Calcium is clean, meaning no synthetic binders, fillers, artificial flavors, sweeteners, colors, or additives and is Non GMO Project Verified and certified Gluten Free

ALGAECAL- Plant Based Calcium Supplement with Vitamin D3 (1000 IU) for Bone Strength, Contains 13 Minerals Supporting Bone Health, Organic Calcium (750 mg) for Women & Men, 90 Veggie Caps, Made in USA

ALGAECAL- Plant Based Calcium Supplement with Vitamin D3 (1000 IU) for Bone Strength, Contains 13 Minerals Supporting Bone Health, Organic Calcium (750 mg) for Women & Men, 90 Veggie Caps, Made in USA

Promotes healthy bone density.
Plant-based and gentle formula.
Natural, sustainable sourcing methods.

Main Highlights

Promote healthy bones: AlgaeCal, a clinically supported plant-based calcium supplement for bone health. Sourced from organic algae with 13 bone-supporting minerals. In addition to calcium, each serving includes magnesium, potassium, boron, manganese, vanadium, phosphorus, copper, zinc, nickel, strontium, silicon, and selenium – with vitamin D3.
Red Algae Organic Calcium: traditional calcium citrate supplements are sourced from quarries. But AlgaeCal is different. It’s a plant-based calcium that naturally contains all 13 of the minerals clinically supported - like magnesium and vitamin D - to support bone health. And because it’s plant-based, it’s gentle on the body.
Tested and approved: AlgaeCal is recommended by bone health experts to reduce the risk of osteopenia fractures. Boost bone strength with the 13 minerals essential for healthy bone density. AlgaeCal is the ideal plant based calcium, with magnesium, zinc, and vitamin D for women and men with low bone density.
Natural & Sustainable: AlgaeCal is a calcium supplement for women and men that’s sourced from organic ocean algae. Hand-harvested from a beach in South America, these organic algae are a new chapter in bone health! They naturally contain all the minerals for healthy bones.
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 that’s safe, natural, and clinically supported.

PlantFusion Vegan Calcium, Premium Plant Based Calcium (1000mg) Sourced from Icelandic Red Algae, Plus Magnesium, D3, K2, and Boron, 90 Vegan Tablets

PlantFusion Vegan Calcium, Premium Plant Based Calcium (1000mg) Sourced from Icelandic Red Algae, Plus Magnesium, D3, K2, and Boron, 90 Vegan Tablets

Ultimate fusion for bone health.
Plant-based, high-quality ingredients.
Thoroughly tested for purity.

Main Highlights

PLANT BASED CALCIUM MAGNESIUM: We start with a scientifically validated and trademarked source of calcium/magnesium concentrated to 1000mg per serving. We then add plant based vitamins D3 and K2 for calcium assimilation and critical trace minerals like strontium and boron which help form the bone matrix. Altogether more than a dozen different supplements in one. We call this the ultimate Fusion for bone health!
SOURCE MATTERS MOST: This ultra-premium plant based calcium and magnesium supplement is made from a unique trademarked ingredient called Aquamin. Aquamin is a nutrient dense form of algae grown in the pristine nutrient rich waters off Iceland. Calcium and magnesium from Icelandic red algae is a higher quality source of these minerals that is more absorbable in your body. This allows you to take a smaller dose than you might with synthetic forms of calcium for easy digestion.
D3, K2, BORON & STRONTIUM: Bone growth is a complex process that requires many different nutrients. That’s why our formula contains over 12 different supplements in one. These include plant based vitamin D3 & vitamin K2, plus the minerals boron and strontium which all play a role in creating the bonds that form our bone matrix for optimal bone density and strength.
CLEAN BONE SUPPORT FORMULA: We only use minerals that are tested for heavy metals, vegan certified, non-GMO verified, dairy free, gluten free, soy free and that contain no artificial ingredients or chemicals.
THE PLANT BASED EXPERTS: PlantFusion was one of the pioneers of plant based supplements over a decade ago. All products are produced under cGMPs (current Good Manufacturing Practices) and adhering to US FDA guidelines. All ingredients and finished goods are subjected to rigorous 3RD party analytical testing.

THORNE - Calcium - (Formerly DiCalcium Malate) - Chelated Calcium for Enhanced Absorption with DimaCal for Bone Density Support* - 120 Capsules

THORNE - Calcium - (Formerly DiCalcium Malate) - Chelated Calcium for Enhanced Absorption with DimaCal for Bone Density Support* - 120 Capsules

Well-absorbed calcium for bones.
More calcium per capsule.
Pure ingredients, no allergens.

Main Highlights

Bone: Well-tolerated, well-absorbed calcium for bone support*
More Calcium Per Cap: More concentrated form of calcium means more calcium per capsule
Optimal Absorption: Significantly better absorbed than many other calcium supplements on the market
Free From: Every Thorne product is made with the purest possible ingredients - without gluten or other major allergens (eggs, tree nuts, peanuts) This product also contains no soy, dairy, shellfish, or fish
Thorne's commitment to integrity and science-backed products has helped us earn the trust of thousands of health-care professionals, U.S. National Teams, the Mayo Clinic, and families around the world

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

Pure Encapsulations

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

Supports heart and colon health.
Highly bioavailable calcium source.
Free from unnecessary additives.

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.

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

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

Supports overall bone health.
Organic and sustainably sourced.
Easy to swallow, convenient tablets.

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
TINY & EASY TO SWALLOW: Miniature 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

Garden of Life Calcium Supplement - Living Calcium Advanced Formula, D3, K2 and Magnesium for Absorption, 120 Vegetarian Caplets

Garden of Life Calcium Supplement - Living Calcium Advanced Formula, D3, K2 and Magnesium for Absorption, 120 Vegetarian Caplets

Whole food plant-based calcium.
Easy to digest formulation.
No artificial colors or preservatives.

Main Highlights

Get 1,000mg of Whole Food Plant Calcium, Vitamins D3 and K1 plus Magnesium for Absorption in easy to swallow caplets
Provides the recommended daily amount of calcium, vital minerals and cofactors to help support healthy bone density
Delivers whole food plant-based calcium that is easy to digest
Includes vitamin D3, vitamin K2 (from natto) and magnesium
Contains no artificial colors or preservatives