The Best Women’s Calcium Supplements in 2025

What other nutrients are used to support women’s bone health?

Top Bone Support Supplements of 2025

Key Ingredients

Try To Avoid

Important Criteria

Calcium

Vitamin D

Vitamin K

Vitamin C

Turmeric

Zinc

No Less Than 1000 mg Calcium

90d Money-Back Guarantee

Third Party Tested

Bone Restore by Life Extension

AlgaeCal Plus by AlgaeCal

Calcium 500 mg by Nature Made

Organic Plant Calcium by Garden of Life mykind Organics

DISCLAIMER: This scientific research is for informational purposes only. The results reported may not necessarily occur in all individuals. Primal Harvest provides this information as a service but does not endorse it. This information should not be read to recommend or endorse any specific products.

1. “What Is Bone?” National Institutes of Health, U.S. Department of Health and Human Services, https://bones.nih.gov/health-info/bone/bone-health/what-is-bone. 

2. Ross AC;Taylor CL;Yaktine AL;Del Valle HB; “Dietary Reference Intakes for Calcium and Vitamin D.” National Center for Biotechnology Information, U.S. National Library of Medicine, https://pubmed.ncbi.nlm.nih.gov/21796828/. 

3. “What Is Bone?” National Institutes of Health, U.S. Department of Health and Human Services, https://bones.nih.gov/health-info/bone/bone-health/what-is-bone.

4. Ross AC;Taylor CL;Yaktine AL;Del Valle HB; “Dietary Reference Intakes for Calcium and Vitamin D.” National Center for Biotechnology Information, U.S. National Library of Medicine, https://pubmed.ncbi.nlm.nih.gov/21796828/. 

5. “Office of Dietary Supplements - Calcium.” NIH Office of Dietary Supplements, U.S. Department of Health and Human Services, https://ods.od.nih.gov/factsheets/Calcium-HealthProfessional/#h6. 

6. (PDF) Vitamin C and Bone Health - Researchgate. https://www.researchgate.net/publication/305782327_Vitamin_C_and_Bone_Health. 

7. Razzaque, Mohammed S. “Magnesium: Are We Consuming Enough?” Nutrients, U.S. National Library of Medicine, 2 Dec. 2018, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316205/. 

8. Qu X;Yang H;Yu Z;Jia B;Qiao H;Zheng Y;Dai K; “Serum Zinc Levels and Multiple Health Outcomes: Implications for Zinc-Based Biomaterials.” Bioactive Materials, U.S. National Library of Medicine, https://pubmed.ncbi.nlm.nih.gov/32258830/. 

To see a list of our other references, please click here. 

CITATIONS

How may other women's calcium supplements on the market not meet your needs?

Our Choice

• 1300 mg calcium
• Vitamins, minerals, and herbal extracts
• Certified safety and purity testing
• 90-day money-back guarantee
• Made in the USA with globally sourced ingredients

3. AlgaeCal Plus

by AlgaeCal

PROS

• Contains vitamin C, D, and K
• Includes magnesium

CONS

• Price
• Less than 1000 mg of calcium

BOTTOM LINE

AlgaeCal Plus is a calcium supplement made in the USA with algae-derived calcium and magnesium. It also includes the vitamins C, D, and K, as well as boron in its formula that comes in a 2-capsule per day serving. However, you may want to note it only contains 360 mg of calcium which is a lower amount than some of the other products featured here. 

by Nature Made

PROS

• Contains calcium and vitamin D3
• 1 tablet 1-2x daily
• Made in the USA

CONS

• No magnesium, zinc, or vitamin K
• Less than 1000 mg of calcium
• 30-day return policy

BOTTOM LINE

Calcium by Nature Made combines 600 mg of calcium with 10 mcg of vitamin D3 in their calcium supplement. Adults are recommended to take 1 tablet 1-2 times per day which is a nice and easy serving size for most people. However, it looks like it was missing some of the other ingredients you might be looking for such as magnesium, zinc, and vitamin K. You may also note that the brand only offers a 30-day period to return the product. 

5. Organic Plant Calcium 

by Garden of Life mykind Organics

PROS

• Contains calcium, magnesium, vitamin D, and vitamin K
• Includes an ‘Organic Plant Calcium Blend’
• Third-party tested

CONS

• No vitamin C
• No zinc
• No 'Subscribe & Save' option

BOTTOM LINE

Organic Plant Calcium by Garden of Life mykind Organics is formulated with 800 mg of calcium as well as magnesium, vitamin D, and vitamin K. It also contains fruit and vegetable extracts in an ‘Organic Plant Calcium Blend’ that includes broccoli, spinach, garlic, red cabbage, and berries amongst others. Some may want to note that this formula is made with less calcium than some of the other products featured here and also doesn’t include vitamin C or zinc. Another factor to consider is that the brand doesn't offer a subscription service. 

2. Bone Restore 

by Life Extension

PROS

• Contains calcium, magnesium, manganese, and zinc as well as vitamins K and D 
• Plant-derived capsules
• Certified safety and purity testing
• Made in the USA

CONS

• Less than 1000 mg of calcium
• No vitamin C

BOTTOM LINE

Bone Restore by Life Extension is formulated with 700 mg of calcium, minerals like magnesium, boron, and zinc, as well as vitamins K and D. While this formula does provide a wide range of nutrients, it contains lower amounts of some of them than some other formulations. It also doesn’t contain vitamin C or some extracts like turmeric. 

• With 1300 mg of calcium
• Vitamins C, D, K, and minerals magnesium, zinc, potassium, and more.
• With herbal extracts and adaptogens like turmeric
• Easy-to-take capsules
• Third-party tested
• Made in the USA with globally sourced ingredients

PROS

CONS

• Only available online
• Sometimes out of stock

Primal Bone Health by Primal Harvest is a well-rounded calcium complex supplement delivered in easy-to-take capsules. It is expertly formulated with 1300 mg of calcium, making it a great pick for women looking to support their calcium intake.* In addition to calcium and vitamin D, this formula also contains the minerals magnesium, zinc, boron, manganese, and potassium as well as vitamins C and K. Primal Bone Support also includes herbal extracts such as turmeric, black pepper extract, Cissus quadrangularis, Coleus Forskohlii, and the amino acid L-carnitine.

This unique calcium complex comes in capsules that are convenient to add to any supplement routine. It is independently third-party lab tested and abides by strict GMP manufacturing practices in the USA.

Primal Bone Health offers great value and quality at a reasonable price. 

Good to know: Primal Harvest has a convenient subscription service that comes with free shipping and a 20% discount on all products. They also offer a 90-day money-back guarantee for all of their products.

BOTTOM LINE

Women who:

• Struggle to consume enough calcium through diet alone*
• Are not fans of calcium-rich foods*
• Follow a vegan or plant-based diet*
• Aren’t always able to follow a healthy lifestyle*

Who might benefit from taking a quality calcium supplement?

4. Calcium

Our bones are responsible for several key functions. They facilitate movement, protect our inner organs, aid blood cell generation, and provide storage for important minerals. However, as we get older it can get harder to maintain bone health and supply them with enough nutrients to stay healthy and strong.

Following a healthy lifestyle, incorporating weight-bearing exercises, and eating a balanced diet with the right bone-supporting nutrients can support women’s bone health throughout life and during the aging process. 

What are these key nutrients? According to the NIH, calcium and vitamin D are two of the most important nutrients for supporting bone women’s health. [1]

• Feeling satisfied with activity levels*

1 - 2 Months: 

• Support for leading an  active lifestyle*
• Maintaining overall wellbeing*

• Noticing healthy physical performance*
• Feeling energized from physical activities*
• Feeling that they are able to recover normally from workouts*

Note: Individual results may vary. The benefits stated are based on personal experiences and subjective feedback and may vary from person to person.

3 - 6 Months: 

6+ Months: 

Plant Extracts

Magnesium

Subscription Service

Why is calcium important for women (especially as they age)?

Most of us have been told how important calcium is for healthy bones - and for good reason. Calcium is used by the body to build and maintain healthy bones. In fact, over 99% of the calcium in your body is stored in the teeth and bones. [2] 

Bone formation is a continuous process, and for most people bone formation occurs faster than bone loss. However, for some people, after the age of 20 bone loss can happen at a faster rate than bone formation. This is especially true for women who are going through menopause. [3]

According to the NIH:

"

After menopause, bone loss in women greatly exceeds that in men. [4]

"

How might some women benefit from more calcium?

Everyone has individual needs and the experience of making changes in your wellness routine will vary from person to person. Here are some examples of how including a daily calcium supplement may look for different women:

AT A GLANCE

• AMOUNT OF CALCIUM: 1300 mg
• OTHER INGREDIENTS: Vitamins D, C, and K, magnesium, zinc, boron, turmeric, cissus quadrangularis, L-carnitine, coleus forskohlii extract
• FORM: Capsule
• SERVING SIZE: 4 capsules
• SERVINGS PER CONTAINER: 30

AT A GLANCE

• AMOUNT OF CALCIUM: 700 mg
• OTHER INGREDIENTS: Vitamins D3 and K2, magnesium, zinc, boron
• FORM: Capsule
• SERVING SIZE: 4 capsules
• SERVINGS PER CONTAINER: 30

AT A GLANCE

• AMOUNT OF CALCIUM: 25 mg
• OTHER INGREDIENTS: Vitamins D and K, magnesium, boron
• FORM: Capsule
• SERVING SIZE: 4 capsules
• SERVINGS PER CONTAINER: 30

AT A GLANCE

• AMOUNT OF CALCIUM: 600 mg
• OTHER INGREDIENTS: Vitamins D 
• FORM: Tablet
• SERVING SIZE: 1-2 Tablet
• SERVINGS PER CONTAINER: 65-130

AT A GLANCE

• AMOUNT OF CALCIUM:  800 mg
• OTHER INGREDIENTS: Vitamins D and K, magnesium, plant extracts
• FORM: Tablet
• SERVING SIZE: 3 tablets
• SERVINGS PER CONTAINER: 30

Note: We try to update product information as often as we can. Please visit product websites for more information.

Getting plenty of calcium is therefore even more important for women in this age group, which is why the NIH’s calcium RDA is higher for women older than 50. However, some women may find it challenging to consume enough calcium through diet alone and choose to turn to supplements to get enough calcium per day. [5]

Note: These statements are not intended to diagnose, treat, cure, or prevent any disease or condition, nor are they intended to be substitutes for professional medical health advice. Always consult your physician or other qualified healthcare provider for accurate advice, diagnosis, and treatment plan.

• Vitamin D: Also known as the sunshine vitamin, vitamin D aids calcium absorption and may also play a role in bone turnover support.*
• Vitamin C: Many of us are familiar with the role this vitamin plays in maintaining our immune health. Some studies also suggest that vitamin C may potentially be helpful for maintaining healthy bones.* [6]
• Magnesium: Over 60% of magnesium is found in bone tissue, making it vital for maintaining healthy bones.* [7]
• Vitamin K: This vitamin, found in green vegetables such as Brussels sprouts and broccoli, is thought to be important for maintaining bone health.*
• Boron: This trace element is used by the body to maintain bones. It may also be beneficial for the absorption of other minerals the body utilizes for bone health such as calcium, magnesium, and vitamin D.* 
• Zinc: This mineral has been linked with higher bone density in several studies.* [8]
• Manganese: Found in seeds and nuts, maintaining sufficient amounts of this trace mineral may help support bone density.*

All calcium supplements are NOT created equal.

Choosing the best possible formula to support bone health all comes down to knowing what to look for and what to try to avoid so that you never waste your time or hard-earned money. 

Here are some of the top things to try to avoid when shopping for a high-quality calcium supplement for women:

• Unclear Labels: A quality calcium supplement should clearly list all the ingredients, ingredient quantities, and what percent of the DRV they are (when applicable). Avoid products lacking transparency that don’t list all of the specific ingredients or how much of each is included in the formula.
•  Missing Safety Testing & Certifications: Choose a supplement that has been independently third-party lab tested and manufactured in a GMP-certified facility. These precautions will guarantee that the product is top quality and free from unwanted extras, such as contaminants, traces of heavy metals, or pesticides.
• False or Misleading Claims: Beware of any calcium supplement that claims their product treats or cures any specific disease or ailment, or promises miraculous, unrealistic, or misleading results. Always speak to your doctor before starting a new supplement routine.
• Suspiciously Cheap Products: When it comes to your health, this is definitely not an area to test out suspiciously cheap products. There are plentiful options to choose from that are high value and still affordable. In this case, you do get what you pay for!