Top Picks: Best Brands for Calcium Citrate Supplements

Calcium citrate, a popular dietary supplement, plays a crucial role in promoting bone health and overall wellness. Many reputable brands offer high-quality calcium citrate supplements, ensuring that consumers have access to reliable products. These brands prioritize purity, bioavailability, and additional beneficial ingredients to cater to various health needs. For a comprehensive guide on the best calcium citrate brands available in the market, explore the detailed analysis below.

Illustration of calcium citrate

Best brands of calcium citrate in 2025

Citracal

Citracal is a renowned brand that produces high-quality calcium citrate supplements, often recommended for its excellent bioavailability. Calcium citrate from Citracal contains 21.1% calcium by mass in its tetrahydrate form, making it an effective choice for individuals with digestive issues or low stomach acid. This form of calcium is less dependent on stomach acid for absorption and can be taken with or without food, which is particularly beneficial for those with inflammatory bowel disease or achlorhydria. Research has shown that calcium citrate may have improved bioavailability over calcium carbonate in certain individuals, such as those who have undergone gastric bypass surgery. Citracal's products are designed to support bone health and overall calcium intake.

Nature's Bounty

Nature's Bounty is a trusted brand for calcium supplements, particularly known for its high-quality calcium products that support strong, healthy bones. Their Calcium Plus Vitamin D3 supplements are available in various forms such as softgels and tablets, providing essential nutrients like calcium and vitamin D, with some products offering up to 1,200 mg of calcium per serving, which is 92% of the daily recommended value. Since 1971, Nature's Bounty has been committed to passionate science and innovative solutions, ensuring their products meet stringent quality assurance standards and GMP supplement quality standards. Their facilities have been successfully audited by the United States Pharmacopeia, further validating their commitment to quality. With a range of products that are free from artificial flavors, sugars, and common allergens, Nature's Bounty caters to a wide range of health needs.

NOW Foods

NOW Foods is a renowned brand in the health supplement industry, particularly noted for its high-quality calcium citrate products. Their Calcium Citrate Pure Powder, for instance, provides highly bioavailable calcium, with each 3g serving offering 600 mg of calcium, which is 46% of the daily recommended value. This product is free from common allergens like eggs, milk, peanuts, and soybeans, making it suitable for vegans, vegetarians, and those with dietary restrictions. The powder is easily soluble and can be blended into juices for optimal absorption. NOW Foods ensures their products meet GMP standards, reflecting their commitment to quality and customer health.

Solgar

Solgar is a renowned brand in the nutritional supplement industry, particularly for its high-quality Calcium Citrate with Vitamin D3 products. Founded in 1947, Solgar has been a pioneer in providing innovative, science-based supplements that support overall health and well-being. Their Calcium Citrate with Vitamin D3 formula offers 1000mg of calcium and 15mcg of Vitamin D3 per serving, ensuring optimal absorption and bone health. With a commitment to non-GMO ingredients and avoiding artificial fillers, Solgar products are highly recommended, as evidenced by 98% of consumers endorsing the brand.

GNC

GNC is renowned as one of the best producers of calcium citrate, offering a highly absorbable and bioavailable form of calcium that enhances bone strength and density. Their Calcium Citrate 1000mg product is specifically designed to counter the body's limited ability to absorb calcium from food, with only 15-20% absorption from diet, making GNC's supplement a crucial addition for maintaining healthy bones, especially for those experiencing age-related or postmenopausal bone loss. This supplement also supports muscle contraction, strengthens teeth and nails, and is certified by FSSAI as a vegetarian, gluten-free, and non-GMO product. With a recommended daily dosage of 1000mg, GNC ensures maximum bone health benefits. The product has received a 4.5-star rating from customers, highlighting its effectiveness.

Nature Made

Nature Made is a highly reputable brand, particularly noted for its high-quality calcium supplements, including calcium citrate. Founded in 1971, Nature Made has over 50 years of expertise and is the #1 Pharmacist Recommended Vitamin and Supplement brand in nine product segments. Their calcium supplements, such as the Calcium 600 mg with Vitamin D3 Softgels, are USP verified for purity and potency, ensuring consumers receive reliable and effective products. Nature Made's commitment to quality involves using high-quality ingredients and adhering to strict standards set by the U.S. Pharmacopeia. This brand is trusted for its science-backed solutions and expert-driven innovation.

Thorne Research

Thorne Research is renowned for producing high-quality calcium supplements, particularly calcium citrate, which is absorbed significantly better than calcium carbonate, with studies showing a 22% to 27% higher absorption rate whether taken on an empty stomach or with meals. Their calcium products, such as Thorne Calcium (formerly DiCalcium Malate), offer a concentrated form of calcium, providing 250 mg per capsule, which is more concentrated than other forms like calcium carbonate. This enhanced absorption is crucial for individuals at risk of calcium inadequacy, including peri- and postmenopausal women, vegans, and those with vitamin D deficiencies. Thorne's formulations are designed to support bone health and are recommended by health professionals. The brand's commitment to research and quality ensures that their products meet the highest standards.

Pure Encapsulations

Pure Encapsulations is a renowned brand, celebrated for its high-quality calcium citrate supplements, which have been developed over the last 30 years through rigorous research and innovation. Their calcium citrate capsules are highly absorbable, containing 300 mg of calcium per serving, and are free from common allergens such as gluten, wheat, and GMOs. These supplements support bone, cardiovascular, and colon health, and are manufactured in an NSF-GMP registered facility to ensure purity and potency. Pure Encapsulations products are third-party tested and sourced from trusted suppliers worldwide. This brand stands out for its commitment to transparency and quality, making it a trusted choice for those seeking effective calcium supplements.

Jarrow Formulas

Jarrow Formulas is a leading producer of calcium supplements, particularly notable for its BoneUp(r) product line, which features StimuCal(tm) MicroCrystalline HydroxyApatite (MCHA) derived from pasture-fed New Zealand calves. This form of calcium has been shown to support bone mineral density more effectively than calcium carbonate, with clinical studies indicating a 50% lower peak blood calcium level compared to other forms of calcium. The BoneUp(r) formula also includes essential micronutrients like vitamins D3 and K2, magnesium, and zinc to comprehensively support bone health. Jarrow Formulas adheres to strict Current Good Manufacturing Practices (cGMP) to ensure the purity and potency of their products. The company's commitment to scientific research and funding studies underscores its superior science approach.

Kirkland Signature

Kirkland Signature is renowned as one of the top producers of calcium citrate supplements, known for their high potency and comprehensive formulation. Their Calcium Citrate, Magnesium, and Zinc supplement contains 500mg of calcium, over 80mg of magnesium, 20mg of Vitamin D3, and 10mg of zinc, all verified by the United States Pharmacopeia (USP). This product has been praised for its effectiveness in supporting bone, muscle, and teeth health, and it has been recognized for customer satisfaction in the Consumer Trends and Preferences Report of 2020. The supplement is also free from artificial colors, flavors, and preservatives, and is gluten-free and yeast-free. Kirkland Signature's commitment to quality and safety is evident through their strict manufacturing practices and USP verification.