Last update
5/14/2026

Overview

SCIENTIFIC SCORE
Likely Ineffective
Based on 17 Researches
4.8
USERS' SCORE
Good
Based on 64 Reviews
8.7
Supplement Facts
Serving Size:  2 Veg Capsules
Amount Per Serving
%DV
Magnesium (from Magnesium Aspartate)
250 mg
60%
Potassium (from Potassium Aspartate)
99 mg
2%
Taurine (Free-Form)
100 mg
📅 Last updated:

Top Medical Research Studies

9
Magnesium oxide treats leg cramps
We conducted a study to evaluate how effective magnesium oxide monohydrate (MOMH) is in treating nocturnal leg cramps (NLC). This was a randomized, double-blind, placebo-controlled trial involving multiple centers in Ukraine, where participants took either MOMH or a placebo nightly for 60 days.

Our focus was on measuring the frequency and duration of cramps, the pain they caused, and how they affected sleep quality and overall life satisfaction. We used thorough statistical methods to compare the results between the two groups.

The findings indicated that MOMH is both effective and safe for individuals dealing with NLC. Participants reported improvements in their symptoms, demonstrating that this magnesium supplement can play a helpful role in managing nocturnal leg cramps.
Read More
9
Magnesium reduces pregnancy leg cramps
We sought to understand the effectiveness of oral magnesium in treating leg cramps experienced by pregnant women. Our study was well-structured, involving a double-blind, randomized, placebo-controlled design. It included 86 healthy pregnant women between 14 to 34 weeks of gestation who encountered leg cramps at least twice a week, and we followed them over a four-week period.

At the end of the study, we discovered that the women taking magnesium bisglycinate chelate (300 mg per day) reported a significant reduction in cramp frequency—86% experienced at least a 50% drop compared to only 60.5% of those taking the placebo. Additionally, those on magnesium also noted a notable decrease in cramp intensity, with 69.8% achieving a similar improvement versus just 48.8% in the placebo group.

Encouragingly, we found no major side effects reported in either group, such as nausea or diarrhea. Our findings suggest that magnesium supplements can effectively reduce both the frequency and severity of leg cramps during pregnancy, offering a potential treatment option for women dealing with this common issue.
Read More
7
Magnesium's potential against cramps
We set out to investigate whether magnesium citrate could be an effective remedy for those who experience bothersome leg cramps, particularly at night. In our study, we used a randomised, double-blind, cross-over, placebo-controlled design to ensure reliable results. Participants suffering from regular leg cramps were recruited and given either magnesium citrate or a matching placebo over six weeks.

Our findings revealed that those who began the trial with the placebo experienced an average reduction in cramps when taking magnesium, with a median of 5 cramps compared to 9 on the placebo. Moreover, a notable percentage of participants felt that the magnesium treatment had indeed helped them, with 78% reporting benefits, as opposed to 54% who felt the placebo was effective.

While these results suggest that magnesium may have a positive impact, it’s essential to mention that the impact on cramp severity and duration wasn’t significantly different between the two groups. Additionally, some participants did report experiencing diarrhoea as a side effect of magnesium. Overall, we believe magnesium shows promise in alleviating nocturnal leg cramps and recommend further research to fully evaluate its effectiveness.
Read More

Most Useful Reviews

10
Amazing results
35 people found this helpful
UPDATE: These supplements continue to work for me. I am usually sceptical about new products, especially when they receive rave reviews. I suffered from leg and foot cramps at night, causing me to bolt out of bed in pain. Potassium and magnesium were said to be helpful, and after taking two a day for a week or two, all my cramping ceased. I'm a firm believer in the power of the right supplements.
Read More
10
Works every evening
19 people found this helpful
I needed a solution for night-time leg cramps and regularity. These tablets really work for me! I take three every evening, and I no longer experience leg cramps. They also aid in keeping my digestive system functioning well. However, three might be excessive for some; one or two could suffice based on individual needs.
Read More
9
No more cramps
18 people found this helpful
I desperately needed this! I tried everything to eliminate my leg cramps at night, including stretching, various workouts, and even changing my diet to include potassium-rich foods. Despite my efforts, I wasn't getting enough potassium. However, since I started taking just one of these tablets, I'm no longer suffering at night—it's such a relief!
Read More

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Medical Researches

SCIENTIFIC SCORE
Likely Ineffective
Based on 17 Researches
4.8
  • All Researches
9.5
Magnesium's potential in cramps
We explored the effects of magnesium treatment in a unique case involving a 62-year-old woman with stage IV colon cancer undergoing oxaliplatin therapy. Shortly after her first infusion, we observed that she experienced significant neurological symptoms, including right hemibody paresthesia, muscle cramping in her right calf, and dysphonia.

To address these symptoms, she was administered intravenous magnesium sulfate along with calcium gluconate. Remarkably, within three hours, all her symptoms resolved. While this case suggests that magnesium can provide relief from cramps and other neurological side effects, it is important to note that magnesium was used in conjunction with other medications, making it challenging to assess its isolated effectiveness.

For future doses, the oxaliplatin was adjusted by reducing the dose and extending the infusion duration, which minimized her symptoms to occasional mild paresthesia. In summary, while magnesium showed promise in this case, further research is needed to determine its specific impact on leg cramps in a clearer, more controlled manner.
Read More
9
Magnesium oxide treats leg cramps
We conducted a study to evaluate how effective magnesium oxide monohydrate (MOMH) is in treating nocturnal leg cramps (NLC). This was a randomized, double-blind, placebo-controlled trial involving multiple centers in Ukraine, where participants took either MOMH or a placebo nightly for 60 days.

Our focus was on measuring the frequency and duration of cramps, the pain they caused, and how they affected sleep quality and overall life satisfaction. We used thorough statistical methods to compare the results between the two groups.

The findings indicated that MOMH is both effective and safe for individuals dealing with NLC. Participants reported improvements in their symptoms, demonstrating that this magnesium supplement can play a helpful role in managing nocturnal leg cramps.
Read More
9
Magnesium reduces pregnancy leg cramps
We sought to understand the effectiveness of oral magnesium in treating leg cramps experienced by pregnant women. Our study was well-structured, involving a double-blind, randomized, placebo-controlled design. It included 86 healthy pregnant women between 14 to 34 weeks of gestation who encountered leg cramps at least twice a week, and we followed them over a four-week period.

At the end of the study, we discovered that the women taking magnesium bisglycinate chelate (300 mg per day) reported a significant reduction in cramp frequency—86% experienced at least a 50% drop compared to only 60.5% of those taking the placebo. Additionally, those on magnesium also noted a notable decrease in cramp intensity, with 69.8% achieving a similar improvement versus just 48.8% in the placebo group.

Encouragingly, we found no major side effects reported in either group, such as nausea or diarrhea. Our findings suggest that magnesium supplements can effectively reduce both the frequency and severity of leg cramps during pregnancy, offering a potential treatment option for women dealing with this common issue.
Read More
7
Magnesium's potential against cramps
We set out to investigate whether magnesium citrate could be an effective remedy for those who experience bothersome leg cramps, particularly at night. In our study, we used a randomised, double-blind, cross-over, placebo-controlled design to ensure reliable results. Participants suffering from regular leg cramps were recruited and given either magnesium citrate or a matching placebo over six weeks.

Our findings revealed that those who began the trial with the placebo experienced an average reduction in cramps when taking magnesium, with a median of 5 cramps compared to 9 on the placebo. Moreover, a notable percentage of participants felt that the magnesium treatment had indeed helped them, with 78% reporting benefits, as opposed to 54% who felt the placebo was effective.

While these results suggest that magnesium may have a positive impact, it’s essential to mention that the impact on cramp severity and duration wasn’t significantly different between the two groups. Additionally, some participants did report experiencing diarrhoea as a side effect of magnesium. Overall, we believe magnesium shows promise in alleviating nocturnal leg cramps and recommend further research to fully evaluate its effectiveness.
Read More
7
Magnesium shows potential benefits
We explored the effectiveness of magnesium treatment for leg cramps during pregnancy through a review of five randomized trials involving 352 women.

The trials varied in quality, but interestingly, they included comparisons of different treatments such as calcium and sodium chloride against placebos. While the placebo-controlled trial that investigated calcium did not show any significant benefits, there were hints of promise for magnesium.

For those looking for relief from troublesome leg cramps, our analysis indicated that magnesium—specifically in the forms of magnesium lactate or citrate—might help. Taking 5mmol in the morning and 10mmol in the evening seemed to provide the best results.

However, the evidence remains mixed, and we couldn't pinpoint any strong benefits from other combinations or supplements tested. So, while magnesium might be beneficial, it’s essential to approach it as one option among many.
Read More

User Reviews

USERS' SCORE
Good
Based on 64 Reviews
8.7
  • All Reviews
  • Positive Reviews
  • Negative Reviews
10
Amazing results
35 people found this helpful
UPDATE: These supplements continue to work for me. I am usually sceptical about new products, especially when they receive rave reviews. I suffered from leg and foot cramps at night, causing me to bolt out of bed in pain. Potassium and magnesium were said to be helpful, and after taking two a day for a week or two, all my cramping ceased. I'm a firm believer in the power of the right supplements.
Read More
10
Works every evening
19 people found this helpful
I needed a solution for night-time leg cramps and regularity. These tablets really work for me! I take three every evening, and I no longer experience leg cramps. They also aid in keeping my digestive system functioning well. However, three might be excessive for some; one or two could suffice based on individual needs.
Read More
9
No more cramps
18 people found this helpful
I desperately needed this! I tried everything to eliminate my leg cramps at night, including stretching, various workouts, and even changing my diet to include potassium-rich foods. Despite my efforts, I wasn't getting enough potassium. However, since I started taking just one of these tablets, I'm no longer suffering at night—it's such a relief!
Read More
9
Shockingly effective
14 people found this helpful
My cramps are gone, and I’m astonished by the benefits from this supplement. After suffering from leg cramps, Charlie horses, twitching, and restless leg syndrome for years, I sought potassium and magnesium for help. I was previously up multiple times a night with cramps and have not woken once since using this product.
Read More
9
Cramps relief
13 people found this helpful
The main benefit I've experienced is the effective reduction of muscle cramps in my legs.
Read More

Frequently Asked Questions

10
Quick relief
7 people found this helpful
Great! I was experiencing calf cramps and within days I felt completely fine.
7.5
Reduced leg cramps
12 people found this helpful
I began taking magnesium following my instructor's advice to mitigate cramps in my legs during fitness. After a week of taking two capsules a day, my cramps ceased. I've since decreased my intake to one capsule daily as everything is now back to normal.
7.5
Wonderful blend for cramps
4 people found this helpful
Great! I adore this product. I have tried numerous types of magnesium for night-time leg cramps, and this blend is truly exceptional. If experiencing leg cramps, ensure you are well-hydrated throughout the day and give this a try!
9
Magnesium oxide treats leg cramps
We conducted a study to evaluate how effective magnesium oxide monohydrate (MOMH) is in treating nocturnal leg cramps (NLC). This was a randomized, double-blind, placebo-controlled trial involving multiple centers in Ukraine, where participants took either MOMH or a placebo nightly for 60 days.

Our focus was on measuring the frequency and duration of cramps, the pain they caused, and how they affected sleep quality and overall life satisfaction. We used thorough statistical methods to compare the results between the two groups.

The findings indicated that MOMH is both effective and safe for individuals dealing with NLC. Participants reported improvements in their symptoms, demonstrating that this magnesium supplement can play a helpful role in managing nocturnal leg cramps.
2
Magnesium ineffective for leg cramps
We examined the effectiveness of magnesium supplements in reducing leg cramps during pregnancy, a common issue that affects up to half of pregnant women. Four randomized controlled trials were included in our analysis, with a total of 332 participants, which compared magnesium treatment to a placebo.

Our findings showed that magnesium supplementation did not significantly decrease the frequency of leg cramps compared to the control group. The weighted mean difference was -0.47, which indicates that while there may be a slight improvement, it was not considered statistically meaningful.

Moreover, magnesium did not help women recover from leg cramps more effectively than the placebo, and there were no significant side effects reported. Overall, we found that oral magnesium supplementation is not effective in treating leg cramps during pregnancy.
We explored how magnesium might help alleviate leg cramps during pregnancy through a systematic review of six randomized controlled trials, involving 390 women in total. These studies compared magnesium with placebo or no treatment to see if it could reduce the frequency and intensity of these cramps.

Interestingly, the results showed mixed outcomes. While some trials indicated a slight reduction in the number of leg cramps after magnesium treatment, it wasn't consistent across the board. For example, one trial noted that magnesium could lead to a 50% reduction in cramps, while others found no significant difference compared to placebo.

We also observed that the overall quality of the evidence was low, mainly due to small sample sizes and design limitations. The studies did not comprehensively assess the safety of magnesium either, as side effects were only reported for magnesium versus placebo. Additionally, it was worth noting that other interventions like calcium and vitamin B were also tested but did not show a clear advantage over magnesium.

In conclusion, our findings leave us with an unclear picture of magnesium's effectiveness against leg cramps in pregnant women. For a more definitive answer, more rigorous studies are warranted, especially those exploring different methodologies, including non-drug therapies.
We investigated the effectiveness of oral magnesium supplementation in reducing leg cramps among pregnant women. In a controlled clinical trial with 132 participants, we compared the impact of 300 mg/day of magnesium citrate against a placebo.

Most participants experienced multiple leg cramps each week, and after four weeks, we recorded a notable reduction in leg cramps overall—28.4% across all women. However, when looking closely, we found no significant difference between the magnesium group and the placebo group. The placebo group even reported a slightly higher percentage of reduction in cramps (32.8% versus 27.2% for magnesium).

We also looked at the side effects and found that four women reported mild gastrointestinal issues, but these were not serious. Overall, the results suggest that oral magnesium supplementation does not significantly improve leg cramps during pregnancy, raising questions about its effectiveness for this purpose.
2
No significant magnesium effect observed
We analyzed the effectiveness of magnesium in treating nocturnal leg cramps through a well-designed study involving a crossover randomized double-blind placebo-controlled trial. In this trial, conducted in Buenos Aires, participants who experienced at least six cramps in the previous month were included.

After an initial washout period with a placebo, 45 eligible individuals were randomly assigned to receive either 900 mg of magnesium citrate twice daily or a placebo for one month, followed by the opposite treatment after another washout.

Our findings were clear: magnesium did not show significant benefits in reducing the number of leg cramps compared to the placebo. In fact, the average number of cramps per participant was similar—11.1 for placebo versus 11.8 for magnesium—indicating that magnesium was not effective in this scenario.

We also noted a period-effect bias, where all participants reported some improvement over time, regardless of whether they received magnesium or placebo. This suggests that factors other than the treatment might be at play, such as the natural progression of leg cramps or a placebo effect.
7
Magnesium shows potential benefits
We explored the effectiveness of magnesium treatment for leg cramps during pregnancy through a review of five randomized trials involving 352 women.

The trials varied in quality, but interestingly, they included comparisons of different treatments such as calcium and sodium chloride against placebos. While the placebo-controlled trial that investigated calcium did not show any significant benefits, there were hints of promise for magnesium.

For those looking for relief from troublesome leg cramps, our analysis indicated that magnesium—specifically in the forms of magnesium lactate or citrate—might help. Taking 5mmol in the morning and 10mmol in the evening seemed to provide the best results.

However, the evidence remains mixed, and we couldn't pinpoint any strong benefits from other combinations or supplements tested. So, while magnesium might be beneficial, it’s essential to approach it as one option among many.

References

  1. Barna O, Lohoida P, Holovchenko Y, Bazylevych A, Velychko V, et al. A randomized, double-blind, placebo-controlled, multicenter study assessing the efficacy of magnesium oxide monohydrate in the treatment of nocturnal leg cramps. Nutr J. 2021;20:90. 10.1186/s12937-021-00747-9
  2. Liu J, Song G, Zhao G, Meng T. Effect of oral magnesium supplementation for relieving leg cramps during pregnancy: A meta-analysis of randomized controlled trials. Taiwan J Obstet Gynecol. 2021;60:609. 10.1016/j.tjog.2021.05.006
  3. Luo L, Zhou K, Zhang J, Xu L, Yin W. Interventions for leg cramps in pregnancy. Cochrane Database Syst Rev. 2020;12:CD010655. 10.1002/14651858.CD010655.pub3
  4. Garrison SR, Korownyk CS, Kolber MR, Allan GM, Musini VM, et al. Magnesium for skeletal muscle cramps. Cochrane Database Syst Rev. 2020;9:CD009402. 10.1002/14651858.CD009402.pub3
  5. Araújo CAL, Lorena SB, Cavalcanti GCS, Leão GLS, Tenório GP, et al. Oral magnesium supplementation for leg cramps in pregnancy-An observational controlled trial. PLoS One. 2020;15:e0227497. 10.1371/journal.pone.0227497
  6. Sebo P, Haller D, Cerutti B, Maisonneuve H. A prospective observational study of the main features of nocturnal leg cramps in primary care. Swiss Med Wkly. 2019;149:w20048. 10.4414/smw.2019.20048
  7. Roguin Maor N, Alperin M, Shturman E, Khairaldeen H, Friedman M, et al. Effect of Magnesium Oxide Supplementation on Nocturnal Leg Cramps: A Randomized Clinical Trial. JAMA Intern Med. 2017;177:617. 10.1001/jamainternmed.2016.9261
  8. Zhou K, West HM, Zhang J, Xu L, Li W. Interventions for leg cramps in pregnancy. Cochrane Database Syst Rev. 2015. 10.1002/14651858.CD010655.pub2
  9. Sebo P, Cerutti B, Haller DM. Effect of magnesium therapy on nocturnal leg cramps: a systematic review of randomized controlled trials with meta-analysis using simulations. Fam Pract. 2014;31:7. 10.1093/fampra/cmt065
  10. Garrison SR, Allan GM, Sekhon RK, Musini VM, Khan KM. Magnesium for skeletal muscle cramps. Cochrane Database Syst Rev. 2012;2012:CD009402. 10.1002/14651858.CD009402.pub2
  11. Supakatisant C, Phupong V. Oral magnesium for relief in pregnancy-induced leg cramps: a randomised controlled trial. Matern Child Nutr. 2015;11:139. 10.1111/j.1740-8709.2012.00440.x
  12. Garrison SR, Birmingham CL, Koehler BE, McCollom RA, Khan KM. The effect of magnesium infusion on rest cramps: randomized controlled trial. J Gerontol A Biol Sci Med Sci. 2011;66:661. 10.1093/gerona/glq232
  13. Uña E. Atypical presentation of acute neurotoxicity secondary to oxaliplatin. J Oncol Pharm Pract. 2010;16:280. 10.1177/1078155209355849
  14. Roffe C, Sills S, Crome P, Jones P. Randomised, cross-over, placebo controlled trial of magnesium citrate in the treatment of chronic persistent leg cramps. Med Sci Monit. 2002;8:CR326. PubMed
  15. Young GL, Jewell D. Interventions for leg cramps in pregnancy. Cochrane Database Syst Rev. 2002. PubMed
  16. Frusso R, Zárate M, Augustovski F, Rubinstein A. Magnesium for the treatment of nocturnal leg cramps: a crossover randomized trial. J Fam Pract. 1999;48:868. PubMed
  17. Dahle LO, Berg G, Hammar M, Hurtig M, Larsson L. The effect of oral magnesium substitution on pregnancy-induced leg cramps. Am J Obstet Gynecol. 1995;173:175. PubMed
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