Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 10 Researches
7.1
USERS' SCORE
Good
Based on 3 Reviews
8.5
Supplement Facts
Serving Size: 2 tablets
Serving Per Container:  90
Amount Per Serving
%DV
Calcium (as calcium hydroxyapatite, calcium citrate, calcium aspartate) †
1,000 mg
77%
Phosphorus (as calcium hydroxyapatite) †
500 mg
40%
Magnesium (as magnesium oxide, magnesium citrate, magnesium aspartate, magnesium taurinate) †
500 mg
119%

Top Medical Research Studies

9
Magnesium reduces kidney stone risk
We conducted a randomized, double-blind, placebo-controlled clinical trial to explore how magnesium treatments influence kidney stones, specifically for those with high levels of oxalate in their urine. Our study involved 90 participants with a history of calcium kidney stones, all of whom were experiencing idiopathic hyperoxaluria. They were divided into three groups receiving either magnesium oxide (MgO), magnesium citrate (MgCit), or a placebo for eight weeks, while their diets were monitored to keep nutritional intake consistent.

After the treatment period, we observed promising results. Both MgO and MgCit effectively reduced the excretion of oxalate in urine, which is a key factor in kidney stone formation. The Group taking magnesium citrate showed even more significant reductions in both oxalate levels and the calcium oxalate supersaturation index, which measures the concentration of stone-forming minerals in urine. This was notably true for participants with normal magnesium levels.

Overall, we found that magnesium supplements might play a beneficial role in decreasing critical risk factors for kidney stones, especially for those using magnesium citrate. It's encouraging to see that this may offer a practical option for those struggling with recurrent stones due to high oxalate excretion.
8
Dietary magnesium may reduce stones
We wanted to understand the relationship between dietary magnesium intake and the prevalence of kidney stones. By examining data from the National Health and Nutrition Examination Survey spanning 2011 to 2018, we were able to analyze the self-reported history of kidney stones among participants.

Our findings indicated that those who consumed higher amounts of magnesium appeared to have a lower likelihood of experiencing kidney stones. Specifically, the average daily magnesium intake was lower in individuals with kidney stones, suggesting that magnesium might play a role in kidney stone formation.

In our analysis, we discovered that when grouped into different levels of magnesium intake, those in the highest intake category had significantly reduced odds of developing kidney stones compared to those in the lowest intake category. This trend suggests a protective effect of dietary magnesium against kidney stone disease.

While our results are promising, we recognize that further research is needed to determine if there is a direct causal relationship between magnesium intake and kidney stones. The evidence points towards a beneficial link, but more prospective studies will help clarify this important topic for better health outcomes.
3
Magnesium affects urine, not stones
We explored the effects of magnesium on kidney stones, focusing specifically on how it might influence urinary chemistry and calcium oxalate (CaOx) stone formation. Using genetic hypercalciuric stone-forming rats, we divided the animals into three groups, each receiving different levels of magnesium for six weeks.

After analyzing the 24-hour urine collection, we observed notable changes depending on magnesium intake. Those on a low magnesium diet had higher urinary supersaturation levels of CaOx, while the high magnesium group showed a significant decrease in urinary supersaturation. However, we need to stress that despite these changes in urine chemistry, magnesium did not impact the actual formation of calcium oxalate stones within the study period.

In summary, while increasing dietary magnesium can lower supersaturation in urine, it doesn't appear to prevent the formation of calcium oxalate stones in this rat model. This finding is important for understanding the role of magnesium in kidney stone prevention.

Most Useful Reviews

9
Strengthens bones safely
Very nice complex! It contains calcium and phosphorus hydroxyapatite, which is best absorbed and specifically strengthens teeth and bones, without being deposited in blood vessels or kidneys. For those needing calcium, this is a fantastic option!
9
No stones observed
Very good, no sediment, no stones.
7.5
Effective osteoporosis prevention
1 people found this helpful
This complex is very beneficial regarding the amount of calcium per tablet. I require one tablet a day, taking it for life. I support my 93-year-old mum with one tablet of this calcium and vitamin D for osteoporosis prevention. The calcium is in a readily absorbable form. The price is very reasonable. Magnesium oxide is ideal, ensuring the calcium goes where needed, rather than being deposited in blood vessels or kidneys. I drink vitamin D and will take K2 for life. I also include Omega-3, zinc chelate, lysine with monolaurin, and ascorbyl palmitate (vitamin C).

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 10 Researches
7.1
  • All Researches
9
Magnesium reduces kidney stone risk
We conducted a randomized, double-blind, placebo-controlled clinical trial to explore how magnesium treatments influence kidney stones, specifically for those with high levels of oxalate in their urine. Our study involved 90 participants with a history of calcium kidney stones, all of whom were experiencing idiopathic hyperoxaluria. They were divided into three groups receiving either magnesium oxide (MgO), magnesium citrate (MgCit), or a placebo for eight weeks, while their diets were monitored to keep nutritional intake consistent.

After the treatment period, we observed promising results. Both MgO and MgCit effectively reduced the excretion of oxalate in urine, which is a key factor in kidney stone formation. The Group taking magnesium citrate showed even more significant reductions in both oxalate levels and the calcium oxalate supersaturation index, which measures the concentration of stone-forming minerals in urine. This was notably true for participants with normal magnesium levels.

Overall, we found that magnesium supplements might play a beneficial role in decreasing critical risk factors for kidney stones, especially for those using magnesium citrate. It's encouraging to see that this may offer a practical option for those struggling with recurrent stones due to high oxalate excretion.
8
Magnesium's complex role in kidney stones
We analyzed how magnesium levels in urine might influence the occurrence of kidney stones. The study involved a mix of 468 patients who had been diagnosed with various types of urinary stones and underwent a detailed 24-hour urine analysis.

Our investigation found that 24-hour urinary magnesium was positively associated with both kidney stones and stones in multiple locations. Specifically, higher levels of magnesium corresponded with increased risk for these conditions. This relationship was particularly interesting because magnesium was highly correlated with another mineral, urinary phosphorus.

On the flip side, we also identified that 24-hour urinary creatinine acted as a protective factor against kidney and ureter stones, suggesting that maintaining adequate creatinine levels could potentially help prevent these types of stones. Additionally, eGFR (estimated Glomerular Filtration Rate) was noted as a risk factor especially for ureter stones and those that appear in multiple locations.

Ultimately, our study underscores that while magnesium is linked to stone formation, there are other contributing factors at play as well. This knowledge could guide improvements in dietary or medicinal strategies aimed at preventing kidney stones, especially emphasizing the need for a balanced intake of minerals in our diets.
8
Magnesium's role in kidney stones
We analyzed a study focused on the effects of a combination of probiotics, potassium, and magnesium on kidney stone formation, specifically looking at crystalluria, which is the presence of crystals in urine that can signal the recurrence of kidney stones. The study involved 23 patients with calcium oxalate kidney stones who had crystalluria but normal metabolic profiles.

Over the course of 20 days, the patients received daily supplementation with beneficial bacteria, including Lactobacillus paracasei, Lactobacillus plantarum, and Bifidobacterium breve, along with potassium citrate and magnesium. After treatment, we observed a decrease in the presence of crystalluria at multiple follow-up points—1, 3, 6, and 12 months later.

Interestingly, while we noted that the probiotics and other agents helped reduce crystalluria, the study did not isolate the specific effects of magnesium alone. Therefore, we must be cautious in drawing firm conclusions about magnesium’s standalone effectiveness in this context.

Overall, the findings suggest that combining these supplements can be beneficial for patients with kidney stones, but the role of magnesium specifically requires further investigation.
8
Magnesium improves urine levels
We aimed to find out how magnesium affects urinary levels of magnesium and citrate in people who form kidney stones and have low magnesium in their urine. By examining medical records, we compared two approaches: one group increased their magnesium through foods, while the other group received magnesium supplements.

We focused on adult patients whose urine magnesium levels were less than 70 mg a day. Following our recommendations, we observed significant changes after both dietary increases and supplementation. Those who took magnesium supplements showed a more pronounced improvement—about 88% were able to raise their urine magnesium to at least 70 mg a day, compared to just 58% in the dietary group.

Interestingly, only the supplement group showed a noticeable increase in urine citrate levels, which is also crucial in the prevention of kidney stones. Overall, both dietary and supplemental magnesium effectively improved magnesium levels, but supplementation had greater success in achieving desirable levels.
8
Dietary magnesium may reduce stones
We wanted to understand the relationship between dietary magnesium intake and the prevalence of kidney stones. By examining data from the National Health and Nutrition Examination Survey spanning 2011 to 2018, we were able to analyze the self-reported history of kidney stones among participants.

Our findings indicated that those who consumed higher amounts of magnesium appeared to have a lower likelihood of experiencing kidney stones. Specifically, the average daily magnesium intake was lower in individuals with kidney stones, suggesting that magnesium might play a role in kidney stone formation.

In our analysis, we discovered that when grouped into different levels of magnesium intake, those in the highest intake category had significantly reduced odds of developing kidney stones compared to those in the lowest intake category. This trend suggests a protective effect of dietary magnesium against kidney stone disease.

While our results are promising, we recognize that further research is needed to determine if there is a direct causal relationship between magnesium intake and kidney stones. The evidence points towards a beneficial link, but more prospective studies will help clarify this important topic for better health outcomes.

User Reviews

USERS' SCORE
Good
Based on 3 Reviews
8.5
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Strengthens bones safely
Very nice complex! It contains calcium and phosphorus hydroxyapatite, which is best absorbed and specifically strengthens teeth and bones, without being deposited in blood vessels or kidneys. For those needing calcium, this is a fantastic option!
9
No stones observed
Very good, no sediment, no stones.
7.5
Effective osteoporosis prevention
1 people found this helpful
This complex is very beneficial regarding the amount of calcium per tablet. I require one tablet a day, taking it for life. I support my 93-year-old mum with one tablet of this calcium and vitamin D for osteoporosis prevention. The calcium is in a readily absorbable form. The price is very reasonable. Magnesium oxide is ideal, ensuring the calcium goes where needed, rather than being deposited in blood vessels or kidneys. I drink vitamin D and will take K2 for life. I also include Omega-3, zinc chelate, lysine with monolaurin, and ascorbyl palmitate (vitamin C).

Frequently Asked Questions

9
Strengthens bones safely
Very nice complex! It contains calcium and phosphorus hydroxyapatite, which is best absorbed and specifically strengthens teeth and bones, without being deposited in blood vessels or kidneys. For those needing calcium, this is a fantastic option!
7.5
Effective osteoporosis prevention
1 people found this helpful
This complex is very beneficial regarding the amount of calcium per tablet. I require one tablet a day, taking it for life. I support my 93-year-old mum with one tablet of this calcium and vitamin D for osteoporosis prevention. The calcium is in a readily absorbable form. The price is very reasonable. Magnesium oxide is ideal, ensuring the calcium goes where needed, rather than being deposited in blood vessels or kidneys. I drink vitamin D and will take K2 for life. I also include Omega-3, zinc chelate, lysine with monolaurin, and ascorbyl palmitate (vitamin C).
9
No stones observed
Very good, no sediment, no stones.
7
Magnesium reduces kidney stone risk
We examined the relationship between magnesium intake and the risk of kidney stones in adults aged 50 and older. By analyzing data collected from the National Health and Nutrition Examination Survey spanning over a decade, we aimed to understand whether increasing magnesium levels could help reduce the chances of developing kidney stones.

Our findings revealed that there is indeed a noteworthy link between magnesium consumption and kidney stones. Specifically, we observed that individuals who consumed higher amounts of magnesium had lower odds of experiencing kidney stones. This trend was especially significant for women, who showed a clearer inverse relationship with magnesium intake.

Interestingly, our results indicated that the protective benefits of magnesium plateau around a daily intake of 350 mg. This means that while increasing magnesium consumption can lower the risk of kidney stones, beyond this threshold, additional magnesium may not yield further benefits.

Overall, our study sheds light on the potential role of magnesium in preventing kidney stones and emphasizes the importance of maintaining a balanced diet rich in this essential mineral for individuals over 50.
8
Magnesium's complex role in kidney stones
We analyzed how magnesium levels in urine might influence the occurrence of kidney stones. The study involved a mix of 468 patients who had been diagnosed with various types of urinary stones and underwent a detailed 24-hour urine analysis.

Our investigation found that 24-hour urinary magnesium was positively associated with both kidney stones and stones in multiple locations. Specifically, higher levels of magnesium corresponded with increased risk for these conditions. This relationship was particularly interesting because magnesium was highly correlated with another mineral, urinary phosphorus.

On the flip side, we also identified that 24-hour urinary creatinine acted as a protective factor against kidney and ureter stones, suggesting that maintaining adequate creatinine levels could potentially help prevent these types of stones. Additionally, eGFR (estimated Glomerular Filtration Rate) was noted as a risk factor especially for ureter stones and those that appear in multiple locations.

Ultimately, our study underscores that while magnesium is linked to stone formation, there are other contributing factors at play as well. This knowledge could guide improvements in dietary or medicinal strategies aimed at preventing kidney stones, especially emphasizing the need for a balanced intake of minerals in our diets.
9
Magnesium reduces kidney stone risk
We conducted a randomized, double-blind, placebo-controlled clinical trial to explore how magnesium treatments influence kidney stones, specifically for those with high levels of oxalate in their urine. Our study involved 90 participants with a history of calcium kidney stones, all of whom were experiencing idiopathic hyperoxaluria. They were divided into three groups receiving either magnesium oxide (MgO), magnesium citrate (MgCit), or a placebo for eight weeks, while their diets were monitored to keep nutritional intake consistent.

After the treatment period, we observed promising results. Both MgO and MgCit effectively reduced the excretion of oxalate in urine, which is a key factor in kidney stone formation. The Group taking magnesium citrate showed even more significant reductions in both oxalate levels and the calcium oxalate supersaturation index, which measures the concentration of stone-forming minerals in urine. This was notably true for participants with normal magnesium levels.

Overall, we found that magnesium supplements might play a beneficial role in decreasing critical risk factors for kidney stones, especially for those using magnesium citrate. It's encouraging to see that this may offer a practical option for those struggling with recurrent stones due to high oxalate excretion.
8
Magnesium's role in kidney stones
We analyzed a study focused on the effects of a combination of probiotics, potassium, and magnesium on kidney stone formation, specifically looking at crystalluria, which is the presence of crystals in urine that can signal the recurrence of kidney stones. The study involved 23 patients with calcium oxalate kidney stones who had crystalluria but normal metabolic profiles.

Over the course of 20 days, the patients received daily supplementation with beneficial bacteria, including Lactobacillus paracasei, Lactobacillus plantarum, and Bifidobacterium breve, along with potassium citrate and magnesium. After treatment, we observed a decrease in the presence of crystalluria at multiple follow-up points—1, 3, 6, and 12 months later.

Interestingly, while we noted that the probiotics and other agents helped reduce crystalluria, the study did not isolate the specific effects of magnesium alone. Therefore, we must be cautious in drawing firm conclusions about magnesium’s standalone effectiveness in this context.

Overall, the findings suggest that combining these supplements can be beneficial for patients with kidney stones, but the role of magnesium specifically requires further investigation.

References

  1. Ran Y, Liu Z, Ma H, Li C, Zhou J, et al. Associations between 25-hydroxyvitamin D/calcium/alkaline phosphatase levels and the risk of developing kidney stones: Results from NHANES (2013-2018)-based and Mendelian randomization studies. Medicine (Baltimore). 2025;104:e41323. doi:10.1097/MD.0000000000041323
  2. Zhang J, Luo H, Wu H, Qian Y, Tang Z, et al. The association between domestic water hardness and kidney stone disease: a prospective cohort study from the UK Biobank. Int J Surg. 2025;111:1957. doi:10.1097/JS9.0000000000002198
  3. Ma L, Qiao Y, Wang R, Chen H, Liu G, et al. Machine Learning Models Decoding the Association Between Urinary Stone Diseases and Metabolic Urinary Profiles. Metabolites. 2024;14. doi:10.3390/metabo14120674
  4. Zhao H, Wang Y, Guan L, Sun Y. Association Between Magnesium Intake and Chronic Kidney Diseases and Kidney Stones in Adults Aged 50 years and Older: Dose-Response Analysis of a Nationally Representative Population-Based Study. J Ren Nutr. 2024. doi:10.1053/j.jrn.2024.11.004
  5. Vittori M, Bove P, Signoretti M, Cipriani C, Gasparoli C, et al. Oral supplementation with probiotics, potassium citrate, and magnesium in reducing crystalluria in stone formers: A phase II study. Urologia. 2024;91:681. doi:10.1177/03915603241272146
  6. Taheri M, Jalali S, Borumandnia N, Tavasoli S, Basiri A, et al. Effect of magnesium oxide or citrate supplements on metabolic risk factors in kidney stone formers with idiopathic hyperoxaluria: a randomized clinical trial. Magnes Res. 2024;37:12. doi:10.1684/mrh.2024.0524
  7. Penniston KL, Coughlin MM, Jhagroo RA. Magnesium Supplementation Increases Urine Magnesium and Citrate in Stone Formers With Hypomagnesuria. J Ren Nutr. 2024. doi:10.1053/j.jrn.2024.06.002
  8. Li Q, Krieger NS, Yang L, Asplin J, Bushinsky DA. Magnesium Decreases Urine Supersaturation but Not Calcium Oxalate Stone Formation in Genetic Hypercalciuric Stone-Forming Rats. Nephron. 2024;148:480. doi:10.1159/000534495
  9. Shringi S, Raker CA, Tang J. Dietary Magnesium Intake and Kidney Stone: The National Health and Nutrition Examination Survey 2011-2018. R I Med J (2013). 2023;106:20.
  10. Rodriguez-Hesles CA, Alkhatatbeh H, Alonso Bartolomé MB, Valladares Ferreiro CA, Ayllón Blanco HR, et al. Urine alkalinization for dissolution of uric acid stones and treatment of other urological diseases with a treatment combining potassium magnesium citrate and theobromine. Arch Ital Urol Androl. 2025;97:13824. doi:10.4081/aiua.2025.13824
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