Top Calcium Supplement Brands for Optimal Bone Health

Calcium is an essential mineral that plays a critical role in maintaining bone health and overall well-being. With many options available in the market, selecting the right calcium supplement can be overwhelming. Some well-regarded brands stand out due to their high quality, absorption rates, and positive consumer feedback. If you're interested in exploring a comprehensive list of top calcium brands to support your dietary needs, read on below.

Illustration of calcium

Best brands of calcium in 2025

Nature Made

Nature Made is a renowned brand, particularly acclaimed for its high-quality calcium supplements, which are designed to support strong bones and teeth. Adequate calcium intake, as provided by Nature Made products, can reduce the risk of osteoporosis, a condition that affects a significant portion of the population, with 43% of American adults having dietary calcium intake below the estimated average requirements. Their supplements often include vitamin D3, which enhances calcium absorption, and other essential minerals like magnesium and zinc. Nature Made products are gluten-free, free from artificial flavors and synthetic dyes, and sourced from high-quality ingredients. With over 50 years of expertise, Nature Made is a trusted partner in maintaining bone health.

Citracal

Citracal is renowned as the #1 doctor and pharmacist recommended calcium brand, as highlighted in the 2022 Pharmacy Times Survey. Their products, such as Citracal Slow Release 1200 and Citracal Maximum Plus, offer efficient calcium absorption through slow-release technology and high solubility, respectively. These supplements provide essential amounts of calcium and Vitamin D3, with the Slow Release 1200 offering 1200 mg of calcium and 1000 IU of Vitamin D3 per serving. Citracal's formulations are designed to be gentle on the digestive system and can be taken with or without food. This brand caters to adults and children aged 12 and older, ensuring comprehensive bone health support. For more details, visit the Citracal Slow Release 1200 product page.

Garden of Life

Garden of Life is a leading producer of high-quality calcium supplements, offering a range of products that cater to various needs. Their Organic Plant Calcium Tablets provide 800mg of plant-sourced calcium from organic algae, along with magnesium, vitamins D3 and K2, and are certified USDA Organic and Non-GMO Project Verified. The Vitamin Code Grow Bone System has been clinically studied and shown to increase bone mineral density, featuring 756mg of raw whole food plant calcium and 680mg of elemental strontium. Living Calcium Advanced delivers 1,000mg of whole food plant calcium from algae, supported by vitamins D3 and K2, and essential minerals. These formulations are designed to support bone health and reduce the risk of osteoporosis.

New Chapter

New Chapter is a leading brand in producing high-quality, plant-based calcium supplements, notably their Bone Strength Take Care products, which utilize sustainably harvested organic Red Marine Algae from Iceland, rich in calcium, magnesium, and over 70 trace minerals. These supplements are enhanced with vitamins K2 and D3 for better absorption and offer 3-in-1 benefits: strong bones, flexible joints, and heart health. Unlike many calcium supplements derived from limestone rock, New Chapter's holistic approach ensures the body recognizes and utilizes the calcium effectively. Their formulas are designed to reduce the risk of osteoporosis and support overall bone density and cardiovascular health. With a focus on natural and organic ingredients, New Chapter stands out as a trusted choice for those seeking effective and sustainable bone support.

Rainbow Light

Rainbow Light is a renowned brand for producing high-quality calcium supplements, ensuring optimal bone health through its carefully formulated products. Their Calcium with Magnesium and Vitamin D3 supplement contains 500mg of calcium, 250mg of magnesium, and 500 IU of vitamin D3, enhancing calcium absorption and utilization. This supplement is free from common allergens such as dairy, soy, gluten, and nuts, making it suitable for various dietary needs. With a two-to-one ratio of calcium to magnesium, it supports strong teeth and bones, and also aids in muscle relaxation, heart rhythm regulation, and nerve function. Rainbow Light's commitment to health is reflected in their wide range of supplements, including multivitamins and targeted vitamins for muscle health.

Kirkland Signature

Kirkland Signature is renowned for its high-quality calcium supplements, such as the Calcium Plus With Vitamin D3 & Minerals, which provides 600 mg of naturally sourced elemental calcium, 800 IU of Vitamin D3, 50 mg of magnesium, and 20 mcg of Vitamin K1 per tablet. This formulation supports healthy bones and teeth, reduces the risk of osteoporosis, and is free from gluten, sodium, yeast, GMOs, artificial flavors, colors, and preservatives. Made in Canada, this product is USP Verified and includes additional minerals like zinc, copper, and manganese to enhance bone health. With a comprehensive support formula, Kirkland Signature calcium supplements are designed to promote healthy tissue formation, muscle function, and immune system activity. As one of the largest consumer packaged brands in the world, Kirkland Signature generates over $52 billion in annual revenue, surpassing brands like Nike.

Solgar

Solgar is a renowned brand in the nutritional supplement industry, particularly known for its high-quality calcium products. Founded in 1947, Solgar has a long-standing commitment to providing innovative, science-based supplements that support health and well-being. Their Calcium Citrate with Vitamin D3 supplement offers 1000mg of calcium and 15mcg of Vitamin D3 per serving, promoting optimal bone health and absorption. This supplement is especially beneficial for individuals with certain health conditions, such as inflammatory bowel disease or malabsorption, as calcium citrate does not rely on stomach acid for absorption. Solgar's products are free from GMOs, gluten, wheat, and dairy, and are packaged in amber glass bottles to ensure purity.

NOW Foods

NOW Foods is a reputable brand known for producing high-quality calcium supplements, supporting bone health with products like Calcium Hydroxyapatite Capsules. These supplements are designed to enhance calcium absorption, a crucial factor given that many Americans fall short of their daily calcium needs, with recommendations ranging from 1,000 mg to 1,200 mg per day depending on age and sex. The brand ensures that their supplements contain optimal amounts of calcium, typically not exceeding 500-600 mg per serving to avoid calcium toxicity. NOW Foods products are developed with careful consideration of nutritional needs, reflecting their commitment to health and wellness. By choosing NOW Foods, consumers can rely on well-formulated supplements to support their bone health.

Pure Encapsulations

Pure Encapsulations is renowned for producing high-quality calcium supplements, utilizing highly bioavailable forms such as calcium citrate and calcium citrate/malate, which are more absorbable than calcium carbonate, especially for individuals with low stomach acidity. Their calcium supplements often include vitamin D3 to enhance calcium absorption and support bone health. With over 30 years of research and development, Pure Encapsulations ensures product purity and potency through rigorous testing by accredited and cGMP certified laboratories. Their products are free from common allergens, GMOs, and unnecessary additives, and are manufactured in an NSF-GMP registered facility. Each product is backed by verifiable science and undergoes thorough quality control measures.

Swisse

Swisse is a renowned brand for producing high-quality calcium supplements, particularly its Calcium + Vitamin D Mini Tabs, which contain 830mg of calcium citrate and 20.8 mg of Vitamin D3 per serving of five tablets. These supplements are scientifically formulated to support skeletal health, maintaining strong bones, teeth, and muscle function. Swisse products are manufactured in FDA-registered and GMP-certified facilities, ensuring rigorous quality control and compliance with standards. The brand has a 50-year heritage and is known for sourcing ingredients based on the latest scientific evidence. Swisse's calcium supplements are designed for all ages, including options for children and adults over 50.