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NOW Supplements Calcium & Magnesium
SCIENTIFIC SCORE
Moderately Effective
Based on 11 Researches
8.5
USERS' SCORE
Good
Based on 28 Reviews
8.1
Supplement Facts
Serving Size: 2 Tablets
Amount Per Serving
%DV
Calcium (elemental) (from 2,775 mg complex of Calcium Carbonate, Calcium Citrate, Calcium Ascorbate)
1 g (1,000 mg)
77%
Magnesium (elemental) (from 928 mg complex of Magnesium Oxide, Magnesium Citrate, Magnesium Ascorbate)
500 mg
119%

Top Medical Research Studies

9
Magnesium shows promise for RA treatment
Magnesium Supplementation Modifies Arthritis Synovial and Splenic Transcriptomic Signatures Including Ferroptosis and Cell Senescence Biological Pathways.
Relevant for autoimmune treatment strategies
We analyzed how magnesium supplementation affects the biology of rheumatoid arthritis (RA) in mice. By feeding one group a diet rich in magnesium and another a standard diet over 15 days, we examined changes in their tissue responses.

Our findings revealed that increased magnesium intake may alter gene expression linked to oxidative stress and cellular aging, processes that are significant in RA development. This suggests that magnesium could be beneficial for managing RA and potentially other autoimmune disorders by reducing disease severity and joint damage.
Read More
9
Magnesium may reduce lupus severity
Revised version with tracked changes oral Magnesium reduces levels of pathogenic autoantibodies and skin disease in murine lupus.
Relevance score reflects promising findings.
We investigated how magnesium (Mg) affects the severity of autoimmune lupus in mice. By feeding MRL/lpr female mice a standard or high magnesium diet for nine weeks, we measured impacts on skin lesions and pathogenic autoantibodies.

The results were encouraging: mice on the high magnesium diet showed significant reductions in skin issues and harmful anti-dsDNA antibodies. Plus, their immune systems displayed more regulatory T cells. However, there were no notable differences in other measured health indicators.

Overall, magnesium supplementation may be a cost-effective and safe complementary treatment for lupus.
Read More
8
Magnesium shows promise for NMOSD
Effects of long-term magnesium L-threonate supplementation on neuroinflammation, demyelination and blood-brain barrier integrity in mice with neuromyelitis optica spectrum disorder.
Study demonstrates therapeutic potential.
Our investigation focused on how magnesium L-threonate might help those with neuromyelitis optica spectrum disorder (NMOSD).

We examined both mice and cultured human cells to see if long-term magnesium treatment could reduce neuroinflammation, demyelination, and strengthen the blood-brain barrier.

The results were promising; magnesium supplementation appeared to alleviate damage linked to NMOSD by improving blood-brain barrier integrity and dampening inflammation.

This suggests magnesium could be a novel approach to treating NMOSD.
Read More

Most Useful Reviews

9.5
Strong nails improvement
Very high-quality calcium combined with magnesium. I’ve been using NowFoods products for a while, and this calcium to magnesium blend did not disappoint. My nails, which weren't strong naturally, became noticeably stronger and shinier. I also had issues with tooth enamel, but now I don’t feel sensitivity to acids or temperature. Magnesium has helped me manage stress, making me calmer. I confidently recommend this supplement for strengthening nails, teeth, and supporting bone health and the nervous system.
Read More
9.5
Improved joint health
This calcium has been wonderful! I started taking it regularly six months ago on my doctor’s advice, primarily for my rheumatoid arthritis. Among many brands I've tried, this one has no side effects and is well absorbed. My nails no longer separate, and I no longer have stomach aches. I've also been sleeping better, which I attribute to magnesium. This is now a regular purchase for my family and me, as I believe daily calcium is essential for health.
Read More
9.5
Joint pain relief
This is my first product from iHerb. I noted various symptoms like joint pain and fatigue after childbirth due to a calcium and magnesium deficiency. I have been taking it for over ten days, and I feel none of those symptoms now! I am quite pleased with the results.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 11 Researches
8.5
  • All Researches
9.5
Calcium's role in RA treatment
Hydrolysis of 2D Nanosheets Reverses Rheumatoid Arthritis Through Anti-Inflammation and Osteogenesis.
Focus on calcium's therapeutic potential
We investigated how calcium, specifically in the form of two-dimensional layered calcium disilicide nanoparticles (CSNs), can play a role in treating rheumatoid arthritis (RA). Unlike typical RA treatments that primarily focus on reducing inflammation, we observed that CSNs have multifunctional properties that can address the inflammatory aspect while also promoting bone health and repair.

Through a process called hydrolysis, CSNs release several beneficial components, including hydrogen gas, calcium hydroxide, and silica. Each of these components contributes uniquely: hydrogen helps reduce harmful radicals and aids in adjusting surrounding immune cell behavior; calcium hydroxide counters the acidity that can worsen bone loss; and dissolved calcium works with phosphates to encourage bone formation.

We found that the application of CSNs had promising results in tests conducted on both mouse and rabbit models of arthritis. This approach not only targets inflammation but also fosters a healthier bone environment, showing potential as a strong therapeutic option for those living with RA. With high biocompatibility and prospects for clinical transformation, this research suggests a new direction in handling autoimmune disorders using calcium-based therapies.
Read More
9
Magnesium shows promise for RA treatment
Magnesium Supplementation Modifies Arthritis Synovial and Splenic Transcriptomic Signatures Including Ferroptosis and Cell Senescence Biological Pathways.
Relevant for autoimmune treatment strategies
We analyzed how magnesium supplementation affects the biology of rheumatoid arthritis (RA) in mice. By feeding one group a diet rich in magnesium and another a standard diet over 15 days, we examined changes in their tissue responses.

Our findings revealed that increased magnesium intake may alter gene expression linked to oxidative stress and cellular aging, processes that are significant in RA development. This suggests that magnesium could be beneficial for managing RA and potentially other autoimmune disorders by reducing disease severity and joint damage.
Read More
9
Magnesium may reduce lupus severity
Revised version with tracked changes oral Magnesium reduces levels of pathogenic autoantibodies and skin disease in murine lupus.
Relevance score reflects promising findings.
We investigated how magnesium (Mg) affects the severity of autoimmune lupus in mice. By feeding MRL/lpr female mice a standard or high magnesium diet for nine weeks, we measured impacts on skin lesions and pathogenic autoantibodies.

The results were encouraging: mice on the high magnesium diet showed significant reductions in skin issues and harmful anti-dsDNA antibodies. Plus, their immune systems displayed more regulatory T cells. However, there were no notable differences in other measured health indicators.

Overall, magnesium supplementation may be a cost-effective and safe complementary treatment for lupus.
Read More
9
Magnesium-based therapy for RA
Anti-Acidification and Immune Regulation by Nano-Ceria-Loaded Mg-Al Layered Double Hydroxide for Rheumatoid Arthritis Therapy.
New therapeutic approach for RA
We explored the potential of a new magnesium-aluminum layered double hydroxide combined with nano-ceria in treating rheumatoid arthritis (RA). This innovative therapy targets the unhealthy immune environment and the harmful buildup of hydrogen ions associated with RA. By neutralizing excess acidity, we observed improved immune responses, encouraging the body to heal damaged bones. This approach showed promising results in mice models, indicating it may be a viable future treatment for managing RA effectively.
Read More
9
Magnesium aids arthritis through immunity
Magnesium increases numbers of Foxp3+ Treg cells and reduces arthritis severity and joint damage in an IL-10-dependent manner mediated by the intestinal microbiome.
High relevance for autoimmune therapies
We explored the effects of a high magnesium diet on rheumatoid arthritis using two mouse models. Our findings suggest that magnesium can significantly reduce arthritis severity and joint damage, while also promoting immune cell types that help combat inflammation.

Interestingly, these benefits seem to hinge on an immune mediator called IL-10 and changes in the gut microbiome, such as increased beneficial bacteria. While our results are promising, it is important to recognize that the protective effects depend on sufficient levels of IL-10, indicating that the relationship between magnesium and immune regulation is quite intricate.
Read More

User Reviews

USERS' SCORE
Good
Based on 28 Reviews
8.1
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Strong nails improvement
Very high-quality calcium combined with magnesium. I’ve been using NowFoods products for a while, and this calcium to magnesium blend did not disappoint. My nails, which weren't strong naturally, became noticeably stronger and shinier. I also had issues with tooth enamel, but now I don’t feel sensitivity to acids or temperature. Magnesium has helped me manage stress, making me calmer. I confidently recommend this supplement for strengthening nails, teeth, and supporting bone health and the nervous system.
Read More
9.5
Improved joint health
This calcium has been wonderful! I started taking it regularly six months ago on my doctor’s advice, primarily for my rheumatoid arthritis. Among many brands I've tried, this one has no side effects and is well absorbed. My nails no longer separate, and I no longer have stomach aches. I've also been sleeping better, which I attribute to magnesium. This is now a regular purchase for my family and me, as I believe daily calcium is essential for health.
Read More
9.5
Joint pain relief
This is my first product from iHerb. I noted various symptoms like joint pain and fatigue after childbirth due to a calcium and magnesium deficiency. I have been taking it for over ten days, and I feel none of those symptoms now! I am quite pleased with the results.
9.5
Osteoporosis relief
I periodically order these for my 71-year-old mother. She no longer experiences hand numbness while sleeping, and her sleep has improved. With an osteoporosis diagnosis, we alternate courses of glucosamine/chondroitin with calcium/magnesium, resulting in significantly better health and less joint pain.
Read More
9.5
Improved sleep quality
Best sleep! I previously struggled with anxiety and superficial sleep, waking up constantly and feeling exhausted. Now, I sleep through the night without waking. I used to experience issues like flattening of my toes, but that's no longer a problem. Initially, I took magnesium citrate without much change, but this product has proven to be effective.
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