10 Best Costco Calcium Supplement of 2025

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

May 2026 Edition

Editor's Choice

9.7

Nature's Bounty

Nature's Bounty Calcium 1200 mg with Vitamin D3 - Bone Health Softgels, Calcium and Vitamin D Supplement, 120 Ct (2-Pack)

Editor's bottom line:

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

Main Highlights

SUPPORTS BONE AND NEUROMUSCULAR HEALTH (1): Providing 1200 mg of Calcium per serving, this Calcium supplement supports bones and neuromuscular health (1)
CALCIUM ABSORPTION (1): Each softgel includes 1000 IU of Vitamin D3 to aid in calcium absorption and support your immune system (1)
NO GLUTEN; DAIRY OR WHEAT: These Calcium with Vitamin D3 softgels are designed for diverse dietary needs; free from Gluten, Dairy, Wheat and artificial flavors
COMMITTED TO QUALITY: We are passionate about the science and ingredients in our products to support you and your family; Our Vitamin D and Calcium softgels are manufactured without artificial flavors or sweeteners
EXPERTLY CRAFTED SUPPLEMENT: Backed by 50 years of scientific expertise; Natures Bounty offers trusted products, backed by science and made with great ingredients

Show Price

Picked by 397 people today

9.5

Nature Made

Nature Made Calcium 600 mg with Vitamin D3, Dietary Supplement for Bone Support, 220 Tablets

Main Highlights

Bone support Calcium supplement: contains one 220 count bottle of Nature Made Calcium 600 mg with Vitamin D3 Tablets
These Calcium tablets help support strong bones and have Vitamin D, which helps improve Calcium absorption and helps support bone health
Adults take one Nature Made Calcium with Vitamin D3 tablet 1 to 2 times daily with water and a meal
Made in the USA with quality global ingredients, this gluten free Calcium supplement has no color added and no artificial flavors
United States Pharmacopeia (USP) Verified
These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease

Show Price

9.5

NOW Foods

NOW Foods Supplements, Calcium & Magnesium 2:1 Ratio, High Potency, Supports Bone Health*, 250 Tablets

Main Highlights

HIGH IN CALCIUM AND MAGNESIUM: Both are necessary for normal neural, muscular, and blood vessel function, as well as for the maintenance of proper bodily fluid balance*
2:1 RATIO: Calcium and magnesium also support the formation and maintenance of a healthy skeleton*
CLASSIFICATIONS/CERTIFICATIONS: Kosher, Vegan, Soy Free
GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product formulation.
Founded in 1968 by Elwood Richard, NOW is one of the largest independent, family- and employee-owned manufacturers of natural products

Show Price

9.2

Nature's Bounty

Nature's Bounty Calcium 1200 mg with 1000 IU Vitamin D3 - Bone Health Softgels, Calcium and Vitamin D Supplement, Gluten Free, 2 Softgels per Day, 120 ct (Pack of 1)

Main Highlights

SUPPORTS BONE AND NEUROMUSCULAR HEALTH (1): Providing 1200 mg of Calcium per serving, this Calcium supplement supports bones and neuromuscular health (1)
CALCIUM ABSORPTION (1): Each softgel includes 1000 IU of Vitamin D3 to aid in calcium absorption and support your immune system (1)
NO GLUTEN; DAIRY OR WHEAT: These Calcium with Vitamin D3 softgels are designed for diverse dietary needs; free from Gluten, Dairy, Wheat and artificial flavors
COMMITTED TO QUALITY: We are passionate about the science and ingredients in our products to support you and your family; Our Vitamin D and Calcium softgels are manufactured without artificial flavors or sweeteners
EXPERTLY CRAFTED SUPPLEMENT: Backed by 50 years of scientific expertise; Natures Bounty offers trusted products, backed by science and made with great ingredients

Show Price

9.0

21st Century

21st Century Calcium 600 mg Supplement (400 Tablets), Vegan-Friendly Bone Strength Calcium Supplement, Non-GMO & Gluten-Free Calcium Carbonate, No Artificial Flavors, Suitable for Men & Women

Main Highlights

VEGAN-FRIENDLY BONE HEALTH SUPPORT*: The 21st Century Calcium 600 delivers 600 mg of calcium (as calcium carbonate) per tablet, providing essential support for maintaining strong bones and promoting overall bone health as a part of daily nutrition*
PREMIUM CALCIUM SUPPLEMENT: Made with the finest ingredients, this vegan calcium supplement is gluten-free, non-GMO, and free from added yeast, preservatives, and artificial flavors, offering a reliable choice for health-conscious adults
EASY DAILY NUTRITION: Take one tablet with any meal, up to twice daily, or as directed by a healthcare provider. This flexible approach makes it easy to incorporate essential calcium into your daily routine while following the recommended dosage
CAUTION & CARE: Consult a healthcare provider before use if pregnant, nursing, on medications, have. a medical condition, or are planning a medical procedure. Store safely, out of reach of children, and always check the seal for tampering
WELLNESS THAT WORKS FOR YOU: For over 30 years, the 21st Century has been proud to offer high-quality, innovative, and trusted vitamin and supplement products to improve the health and well-being of individuals, families, and communities worldwide
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease

Show Price

8.8

MAJOR

Major Oyster Shell Calcium 500 mg - Daily Calcium Supplement - 300 Tablets (1-Pack)

Main Highlights

CALCIUM SUPPLEMENT: Major Oyster Shell Calcium 500 mg is a calcium supplement. Adequate calcium throughout life, as part of a well-balanced diet, may reduce the risk of osteoporosis.
ACTIVE INGREDIENTS: Each tablet contains 500 mg calcium and 5 mg sodium. These oyster shell calcium tablets also contain soy.
HOW TO USE: Do not crush, split, or chew these tablets. Take one tablet twice a day, preferably with a meal. The tablets are free from gluten, preservatives, yeast, and artificial flavors.
QUALITY FORMULATION: We maintain high standards of care through strict regulatory compliance to deliver carefully formulated, effective oyster shell calcium 500 mg tablets.
MAJOR PHARMACEUTICALS: At Major Pharmaceuticals, we believe wellness should be accessible to everyone. We pride ourselves on our legacy of delivering quality OTC and vitamin supplements.

Show Price

8.6

Carlyle

Carlyle Calcium 1200 mg with Vitamin D3 | 120 Softgels | Non-GMO & Gluten Free Supplement for Men and Women | Tahoe Nutritionals

Main Highlights

CALCIUM + D3: Add this duo of nutrients to your daily vitamin routine with quick release softgels
POTENT FORMULA: Provides 1200 mg of Calcium (as Calcium Carbonate) per serving plus Vitamin D3
ROOTED IN WELLNESS: Tahoe Nutritionals provides premium, honest supplements in your pursuit to healthy living
TAHOE NUTRITIONALS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
NATURALLY FREE OF: Gluten, Wheat, Lactose, Artificial Flavor, Sweetener, Preservatives and Non-GMO

Show Price

8.3

HZZYPLANT

Calcium Supplements for Women Softgels, High Absorption Calcium Citrate Supplement Essential Mineral Calcium 1200 mg with Vitamin D3 Magnesium for Bone Health Support, Non-GMO, 2 Month Supply

Main Highlights

EASY-TO-TAKE CALCIUM SUPPLEMENTS FOR WOMEN: No more chalky tablets or hard-to-swallow powdersour Calcium Citrate Softgels 1200mg with Vitamin D3 are formulated for optimal absorption and gentle digestion, perfect for your daily calcium routine. Designed with womens health in mind, this convenient formula helps support bone strength, muscle function, and overall wellness, without causing stomach upset. Fast-absorbing, easy to take, and highly effectiveits the calcium your body can truly feel. Ideal for busy lifestyles and maintaining strong bones as you age.*
CALCIUM 1200MG WITH VITAMIN D3: Our easy-to-swallow Calcium Citrate Softgels provide 1200mg of calcium, vitamin D3 K2 and magnesium to support strong bones, muscle function, and overall vitality. This powerful formula promotes bone density, supports heart health, and boosts immune function. Perfect for busy women, it ensures optimal absorption and convenient daily care. Stay active and healthy with the essential nutrients your body needs to thrive. Ideal for maintaining long-term wellness.
CALCIUM SUPPORT FOR STRONG BONES & VITALITY: Our Calcium Citrate Softgels are formulated for optimal absorption and bone health. Each softgel provides a potent dose of highly bioavailable calcium to support strong bones, muscle function, and overall vitality. Perfect for those seeking to improve bone density and maintain healthy muscle function, this calcium supplement also helps support heart health and immune function. Easy to swallow and gentle on the stomach, our Calcium Citrate Softgels are your ideal daily companion for better bone care and overall wellness.
PACKED WITH ESSENTIAL CALCIUM: Our Calcium Citrate 1200mg Softgels deliver a potent dose of highly bioavailable calcium to support your bone and overall health. Each softgel provides 1200mg of calcium citrate, essential for strong bones, muscle function, and heart health. Calcium is critical for maintaining bone density, supporting proper muscle contraction, and promoting healthy cellular function. With superior absorption and no stomach upset, our Calcium Citrate Softgels are the ideal supplement for women seeking optimal bone care and overall wellness.
100% PURE CALCIUM CITRATE: Our Calcium Citrate Softgels are crafted with the highest quality, ethically sourced calcium, free from additives, preservatives, and fillers. Each softgel delivers 1200mg of calcium citrate to support strong bones, muscle function, and heart health.* Vegan-friendly and gentle on the stomach, our calcium softgels are perfect for those seeking a clean, effective calcium supplement for optimal bone care, muscle strength, and overall wellness. Nourish your body with purity and potency, without compromise.

Show Price

8.1

Nature Made

Nature Made Calcium 600 mg with Vitamin D3, Dietary Supplement for Bone Support, Calcium Supplement for Bone Health, 60 Tablets

Main Highlights

These Vitamin D and Calcium tablets help support strong bones; Vitamin D3 helps improve Calcium absorption and supports bone health
Bone support Calcium supplement: contains one 60 count bottle of Nature Made 600 mg Calcium with Vitamin D3 Tablets
Adults take one Nature Made Vitamin D with Calcium tablet 1 to 2 times daily with water and a meal
Made with high-quality ingredients, this gluten free Calcium 600mg with Vitamin D3 supplement tablet has no color added and no artificial flavors
United States Pharmacopeia (USP) Verified
These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease

Show Price

8.1

Pure Encapsulations

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

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.

Show Price

Our Best Overall Choice

Best Choice

9.7

Nature's Bounty

Nature's Bounty Calcium 1200 mg with Vitamin D3 - Bone Health Softgels, Calcium and Vitamin D Supplement, 120 Ct (2-Pack)

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

SUPPORTS BONE AND NEUROMUSCULAR HEALTH (1): Providing 1200 mg of Calcium per serving, this Calcium supplement supports bones and neuromuscular health (1)
CALCIUM ABSORPTION (1): Each softgel includes 1000 IU of Vitamin D3 to aid in calcium absorption and support your immune system (1)
NO GLUTEN; DAIRY OR WHEAT: These Calcium with Vitamin D3 softgels are designed for diverse dietary needs; free from Gluten, Dairy, Wheat and artificial flavors
COMMITTED TO QUALITY: We are passionate about the science and ingredients in our products to support you and your family; Our Vitamin D and Calcium softgels are manufactured without artificial flavors or sweeteners
EXPERTLY CRAFTED SUPPLEMENT: Backed by 50 years of scientific expertise; Natures Bounty offers trusted products, backed by science and made with great ingredients

Show Price

Deals are Live

Special Amazon deal ends in: