5/14/2025
Last update
5/14/2025
Reviewed By
Overview
SCIENTIFIC SCORE
Questionable
Based on 22 Researches
6.8
USERS' SCORE
Moderately Good
Based on 12 Reviews
7.5
Supplement Facts
Serving Size: 1 Tablet
Amount Per Serving
%DV
Magnesium (elemental) (from 1000 mg Magnesium Malate)
113 mg
27%
Top Medical Research Studies
9
We explored the effectiveness of magnesium oxide (MgO) as a treatment for chronic constipation using a robust randomized, placebo-controlled trial. Over 28 days, participants received MgO, senna, or a placebo.
Both MgO and senna significantly improved bowel movement frequency and quality of life compared to placebo. About 68.3% of those using MgO reported symptom improvement, showcasing its potential as an effective osmotic agent alongside a stimulant laxative.
Importantly, there were no severe treatment-related side effects reported during the trial.
Both MgO and senna significantly improved bowel movement frequency and quality of life compared to placebo. About 68.3% of those using MgO reported symptom improvement, showcasing its potential as an effective osmotic agent alongside a stimulant laxative.
Importantly, there were no severe treatment-related side effects reported during the trial.
Read More
4
We explored how changing the frequency of magnesium oxide (MgO) doses influences its effectiveness in relieving constipation. In this study, we looked at 11 patients who had been regularly using MgO to manage their bowel movements and decided to reduce their daily dose frequency over two weeks.
Initially, patients were taking magnesium three times a day, but we reduced this to either two or one dose per day while keeping the total amount the same. We found that the average number of bowel movements dropped from 7.6 to 6.6 in this period. However, this change wasn't statistically significant, indicating that it may not be clinically meaningful.
Additionally, we measured stool consistency using the Bristol Stool Form Scale and noted no significant difference before and after the dosage adjustment. Our findings suggest that reducing the number of doses does not impact the laxative effect of magnesium oxide. This implies that patients can comfortably manage their magnesium intake without sacrificing effectiveness.
Initially, patients were taking magnesium three times a day, but we reduced this to either two or one dose per day while keeping the total amount the same. We found that the average number of bowel movements dropped from 7.6 to 6.6 in this period. However, this change wasn't statistically significant, indicating that it may not be clinically meaningful.
Additionally, we measured stool consistency using the Bristol Stool Form Scale and noted no significant difference before and after the dosage adjustment. Our findings suggest that reducing the number of doses does not impact the laxative effect of magnesium oxide. This implies that patients can comfortably manage their magnesium intake without sacrificing effectiveness.
Read More
9
Magnesium effectively aids constipation
We investigated how magnesium supplements affect chronic constipation through a systematic review of randomized controlled trials. The analysis included eight studies with a total of 787 participants. We focused on magnesium oxide among other treatment options and assessed its effectiveness in increasing stool frequency and improving consistency.
The findings were quite promising for magnesium oxide. Our results showed that participants who took magnesium experienced a boost in bowel movements, with an average increase of about 3.7 additional movements per week. This improvement in stool consistency was also noteworthy, scoring higher on the Bristol stool chart.
While other supplements like senna and kiwifruit were explored, they didn't significantly enhance symptoms of constipation in this analysis. Therefore, we suggest that magnesium oxide stands out in this study as a worthwhile option for managing chronic constipation. But it’s essential to remember that further research could help confirm these findings and explore the effects of whole food alternatives.
The findings were quite promising for magnesium oxide. Our results showed that participants who took magnesium experienced a boost in bowel movements, with an average increase of about 3.7 additional movements per week. This improvement in stool consistency was also noteworthy, scoring higher on the Bristol stool chart.
While other supplements like senna and kiwifruit were explored, they didn't significantly enhance symptoms of constipation in this analysis. Therefore, we suggest that magnesium oxide stands out in this study as a worthwhile option for managing chronic constipation. But it’s essential to remember that further research could help confirm these findings and explore the effects of whole food alternatives.
Read More
Most Useful Reviews
10
Eliminated harsh products
8 people found this helpful
I love it! It cures constipation, which I have suffered with for many years. Now I can stop using those harsh products that are detrimental to your health!
Read More
9
Eases mornings
It always works! Before bed, we take two capsules, and in the morning, we feel great. As a bonus, for those with constipation, it certainly makes life easier.
Read More
8
Best for fibromyalgia
7 people found this helpful
This product truly helps. I use it instead of various magnesium forms. I previously used Magnesium Malate for my muscle pain (Fibromyalgia), but the pain relievers I take cause constipation. This magnesium is better as it functions more like a laxative. I believe magnesium can assist with fibromyalgia, and since this helps with my other issues, it’s the one to buy.
Read More
Medical Researches
SCIENTIFIC SCORE
Questionable
Based on 22 Researches
6.8
- All Researches
9
We explored the relationship between magnesium supplementation, defecation, and cognitive performance in elite triathletes. In a carefully designed crossover trial, participants undertook cognitive tests after taking magnesium oxide and after defecation. This study highlighted an interesting potential connection between the state of our digestive system and cognitive abilities.
We found that after magnesium-induced defecation, participants completed cognitive tasks more quickly compared to when they had not defecated. Specifically, the average completion time for the cognitive test dropped significantly after defecation when magnesium was involved. While this suggests that magnesium can aid in relieving constipation, its role in improving overall cognitive function during athletics is also noteworthy.
Although we observed an increase in cognitive performance following magnesium supplementation, it’s important to note that no significant changes in blood flow or oxygen levels were detected in the brain during the test. Instead, we noted decreased oxygen levels in the digestive region, hinting at an increased demand for energy there.
Overall, our findings suggest a potential new avenue for enhancing cognitive function in athletes through magnesium to improve constipation. However, the direct effects of magnesium solely on constipation require further investigation.
We found that after magnesium-induced defecation, participants completed cognitive tasks more quickly compared to when they had not defecated. Specifically, the average completion time for the cognitive test dropped significantly after defecation when magnesium was involved. While this suggests that magnesium can aid in relieving constipation, its role in improving overall cognitive function during athletics is also noteworthy.
Although we observed an increase in cognitive performance following magnesium supplementation, it’s important to note that no significant changes in blood flow or oxygen levels were detected in the brain during the test. Instead, we noted decreased oxygen levels in the digestive region, hinting at an increased demand for energy there.
Overall, our findings suggest a potential new avenue for enhancing cognitive function in athletes through magnesium to improve constipation. However, the direct effects of magnesium solely on constipation require further investigation.
Read More
9
Magnesium effectively aids constipation
We investigated how magnesium supplements affect chronic constipation through a systematic review of randomized controlled trials. The analysis included eight studies with a total of 787 participants. We focused on magnesium oxide among other treatment options and assessed its effectiveness in increasing stool frequency and improving consistency.
The findings were quite promising for magnesium oxide. Our results showed that participants who took magnesium experienced a boost in bowel movements, with an average increase of about 3.7 additional movements per week. This improvement in stool consistency was also noteworthy, scoring higher on the Bristol stool chart.
While other supplements like senna and kiwifruit were explored, they didn't significantly enhance symptoms of constipation in this analysis. Therefore, we suggest that magnesium oxide stands out in this study as a worthwhile option for managing chronic constipation. But it’s essential to remember that further research could help confirm these findings and explore the effects of whole food alternatives.
The findings were quite promising for magnesium oxide. Our results showed that participants who took magnesium experienced a boost in bowel movements, with an average increase of about 3.7 additional movements per week. This improvement in stool consistency was also noteworthy, scoring higher on the Bristol stool chart.
While other supplements like senna and kiwifruit were explored, they didn't significantly enhance symptoms of constipation in this analysis. Therefore, we suggest that magnesium oxide stands out in this study as a worthwhile option for managing chronic constipation. But it’s essential to remember that further research could help confirm these findings and explore the effects of whole food alternatives.
Read More
9
Magnesium aids cancer patient care
We conducted a randomized, double-blind trial to assess how magnesium-L-threonate, a new compound, might help relieve constipation while enhancing the pain relief effects of opioids in patients with advanced cancer. During the study, patients receiving this treatment were compared with those taking a placebo, allowing us to clearly see the differences in outcomes.
As the trial progressed, we noticed significant improvements in the group taking magnesium-L-threonate. Notably, this treatment not only helped in managing pain more effectively but also significantly alleviated opioid-induced constipation—a common side effect of opioid use. The data indicated that patients on magnesium-L-threonate required lower doses of opioids for pain management while enjoying better gastrointestinal comfort.
Overall, our findings suggest that magnesium-L-threonate is a promising option in the palliative care landscape for cancer patients, addressing both pain relief and constipation, which can greatly enhance their quality of life.
As the trial progressed, we noticed significant improvements in the group taking magnesium-L-threonate. Notably, this treatment not only helped in managing pain more effectively but also significantly alleviated opioid-induced constipation—a common side effect of opioid use. The data indicated that patients on magnesium-L-threonate required lower doses of opioids for pain management while enjoying better gastrointestinal comfort.
Overall, our findings suggest that magnesium-L-threonate is a promising option in the palliative care landscape for cancer patients, addressing both pain relief and constipation, which can greatly enhance their quality of life.
Read More
9
We examined the effectiveness of oral magnesium sulfate in treating chronic constipation for children with spastic cerebral palsy. In our study, 100 children received either magnesium sulfate or a placebo for one month.
After this period, we noticed significant improvements in bowel movement frequency and stool consistency in the magnesium group, while the placebo group showed minimal change.
This treatment not only alleviated constipation but also reduced the distress of painful bowel movements for both children and their mothers.
After this period, we noticed significant improvements in bowel movement frequency and stool consistency in the magnesium group, while the placebo group showed minimal change.
This treatment not only alleviated constipation but also reduced the distress of painful bowel movements for both children and their mothers.
Read More
9
We explored the effectiveness of magnesium oxide (MgO) as a treatment for chronic constipation using a robust randomized, placebo-controlled trial. Over 28 days, participants received MgO, senna, or a placebo.
Both MgO and senna significantly improved bowel movement frequency and quality of life compared to placebo. About 68.3% of those using MgO reported symptom improvement, showcasing its potential as an effective osmotic agent alongside a stimulant laxative.
Importantly, there were no severe treatment-related side effects reported during the trial.
Both MgO and senna significantly improved bowel movement frequency and quality of life compared to placebo. About 68.3% of those using MgO reported symptom improvement, showcasing its potential as an effective osmotic agent alongside a stimulant laxative.
Importantly, there were no severe treatment-related side effects reported during the trial.
Read More
User Reviews
USERS' SCORE
Moderately Good
Based on 12 Reviews
7.5
- All Reviews
- Positive Reviews
- Negative Reviews
10
Eliminated harsh products
8 people found this helpful
I love it! It cures constipation, which I have suffered with for many years. Now I can stop using those harsh products that are detrimental to your health!
Read More
9
Eases mornings
It always works! Before bed, we take two capsules, and in the morning, we feel great. As a bonus, for those with constipation, it certainly makes life easier.
Read More
8
Best for fibromyalgia
7 people found this helpful
This product truly helps. I use it instead of various magnesium forms. I previously used Magnesium Malate for my muscle pain (Fibromyalgia), but the pain relievers I take cause constipation. This magnesium is better as it functions more like a laxative. I believe magnesium can assist with fibromyalgia, and since this helps with my other issues, it’s the one to buy.
Read More
9
Facilitates digestion
I highly recommend these tablets for addressing constipation. They truly assist with easy digestion.
Read More
7.5
No deficiency
The grain is large, but I manage. Until now, I took magnesium oxide to prevent constipation. Since I started taking three tablets of this daily, I no longer need magnesium oxide. Magnesium deficiency is easy to develop, so I wish to keep taking it.
Read More
Frequently Asked Questions
9
Eases mornings
It always works! Before bed, we take two capsules, and in the morning, we feel great. As a bonus, for those with constipation, it certainly makes life easier.
7.5
Enhances sleep
I took it based on recommendations from friends, and it has been very helpful in improving sleep, reducing cramps, and easing my constipation significantly.
2
No change noted
I take it to alleviate constipation, but I haven't noticed any change, so I'm planning to switch to a magnesium supplement that is better absorbed.
7.5
No deficiency
The grain is large, but I manage. Until now, I took magnesium oxide to prevent constipation. Since I started taking three tablets of this daily, I no longer need magnesium oxide. Magnesium deficiency is easy to develop, so I wish to keep taking it.
6
Gentle option
This is a good option for constipation and is suitable for older individuals. It seems to be well tolerated and is gentler than citrate, in my opinion.
7.5
Family improvement noted
I give it to my family who lack magnesium. Constipation and leg cramps have improved. The price is reasonable, and I would like to repurchase it, though it is often sold out.
0
Negative experience
I didn't like magnesium. I discovered that this form of magnesium is causing me constipation, and I felt sluggish while taking it. I cannot recommend it.
2
Limited relief experienced
1 people found this helpful
It's rather large and difficult to swallow. I started taking it again to help relieve constipation, but I didn't notice much of an effect.
9
Magnesium effectively aids constipation
We investigated how magnesium supplements affect chronic constipation through a systematic review of randomized controlled trials. The analysis included eight studies with a total of 787 participants. We focused on magnesium oxide among other treatment options and assessed its effectiveness in increasing stool frequency and improving consistency.
The findings were quite promising for magnesium oxide. Our results showed that participants who took magnesium experienced a boost in bowel movements, with an average increase of about 3.7 additional movements per week. This improvement in stool consistency was also noteworthy, scoring higher on the Bristol stool chart.
While other supplements like senna and kiwifruit were explored, they didn't significantly enhance symptoms of constipation in this analysis. Therefore, we suggest that magnesium oxide stands out in this study as a worthwhile option for managing chronic constipation. But it’s essential to remember that further research could help confirm these findings and explore the effects of whole food alternatives.
The findings were quite promising for magnesium oxide. Our results showed that participants who took magnesium experienced a boost in bowel movements, with an average increase of about 3.7 additional movements per week. This improvement in stool consistency was also noteworthy, scoring higher on the Bristol stool chart.
While other supplements like senna and kiwifruit were explored, they didn't significantly enhance symptoms of constipation in this analysis. Therefore, we suggest that magnesium oxide stands out in this study as a worthwhile option for managing chronic constipation. But it’s essential to remember that further research could help confirm these findings and explore the effects of whole food alternatives.
4
Magnesium aids constipation relief
We investigated how magnesium hydroxide syrup affects constipation among patients recovering from acute myocardial infarction in an intensive care unit (ICU). Participants were divided into two groups: one received magnesium hydroxide syrup daily, while the other was given flaxseed powder. Our aim was to determine which treatment better supported bowel movements in these patients.
The findings revealed that magnesium hydroxide syrup indeed plays a role in managing constipation. Patients taking this syrup experienced their first bowel movement significantly sooner, averaging just under 25 hours. Although both treatments increased bowel movement frequency and improved stool consistency, the differences between the two groups were not statistically significant. In other words, while magnesium did help prompt quicker bowel movements, it wasn't drastically better than flaxseed powder in terms of the overall outcomes.
Overall, the study highlights magnesium hydroxide syrup as a viable option for easing constipation for patients in recovery, though its effectiveness is comparable to that of flaxseed powder. The time to the first defecation was notably quicker with magnesium, suggesting its potential utility in clinical settings where prompt relief is crucial.
The findings revealed that magnesium hydroxide syrup indeed plays a role in managing constipation. Patients taking this syrup experienced their first bowel movement significantly sooner, averaging just under 25 hours. Although both treatments increased bowel movement frequency and improved stool consistency, the differences between the two groups were not statistically significant. In other words, while magnesium did help prompt quicker bowel movements, it wasn't drastically better than flaxseed powder in terms of the overall outcomes.
Overall, the study highlights magnesium hydroxide syrup as a viable option for easing constipation for patients in recovery, though its effectiveness is comparable to that of flaxseed powder. The time to the first defecation was notably quicker with magnesium, suggesting its potential utility in clinical settings where prompt relief is crucial.
8
We aimed to understand how magnesium, particularly when combined with probiotics, influences bowel movements in elderly orthopedic patients suffering from chronic constipation. A retrospective chart review allowed us to analyze various patient records, focusing specifically on the treatments they received and the outcomes.
Magnesium is often talked about as a potential remedy for constipation because it can help draw water into the intestines, making it easier to pass stools. However, since our study also involved probiotics, which can also impact gut health, it becomes harder to isolate the specific effects of magnesium alone.
After reviewing the data, we observed that the combination of magnesium and probiotics did not show a significant advantage in improving bowel movements for the patients involved. This indicates that while magnesium may play a supportive role, its effectiveness on constipation could vary depending on individual circumstances and may not be as pronounced when combined with other treatments.
Overall, this study serves as a reminder of the complexity of managing constipation, especially in the elderly population, where multiple factors can come into play.
Magnesium is often talked about as a potential remedy for constipation because it can help draw water into the intestines, making it easier to pass stools. However, since our study also involved probiotics, which can also impact gut health, it becomes harder to isolate the specific effects of magnesium alone.
After reviewing the data, we observed that the combination of magnesium and probiotics did not show a significant advantage in improving bowel movements for the patients involved. This indicates that while magnesium may play a supportive role, its effectiveness on constipation could vary depending on individual circumstances and may not be as pronounced when combined with other treatments.
Overall, this study serves as a reminder of the complexity of managing constipation, especially in the elderly population, where multiple factors can come into play.
References
- Wei CC, Harris MB, Ye M, Nicholls A, Alkhatib A, et al. Defecation after magnesium supplementation enhances cognitive performance in triathletes. Sports Med Health Sci. 2025;7:102. 10.1016/j.smhs.2024.04.001
- Watanabe N, Itano A, Ando M, Kawahara M. Effect of reduced daily magnesium oxide doses on laxative effect: a single-center retrospective study. J Rural Med. 2024;19:192. 10.2185/jrm.2023-038
- Amjadi Suraki S, Bagheri-Nesami M, Nabati M, Moosazadeh M, Habibi E. Flaxseed powder and magnesium hydroxide syrup on the intestinal function of patients with acute myocardial infarction in intensive care units. Caspian J Intern Med. 2024;15:234. 10.22088/cjim.15.2.234
- Nagamine T. Effect of magnesium oxide with probiotics on bowel movements in elderly orthopedic patients with chronic constipation: a retrospective chart review. Biosci Microbiota Food Health. 2024;43:1. 10.12938/bmfh.2023-040
- Park CW, Lee J, Hong YH, Kim YS, Suh HJ, et al. Coadministration of Lactulose with Probiotics Ameliorates Loperamide-Induced Constipation in Mice. Prev Nutr Food Sci. 2023;28:427. 10.3746/pnf.2023.28.4.427
- Ishii H, Sawada R, Shiomi M, Shibuya K. A case-control study showing low creatinine clearance and high magnesium intake as risk factors for hypermagnesemia in older individuals. Magnes Res. 2023;36:23. 10.1684/mrh.2023.0513
- Sasaki H, Hayashi K, Imamura M, Hirota Y, Hosoki H, et al. Combined resistant dextrin and low-dose Mg oxide administration increases short-chain fatty acid and lactic acid production by gut microbiota. J Nutr Biochem. 2023;120:109420. 10.1016/j.jnutbio.2023.109420
- van der Schoot A, Creedon A, Whelan K, Dimidi E. The effect of food, vitamin, or mineral supplements on chronic constipation in adults: A systematic review and meta-analysis of randomized controlled trials. Neurogastroenterol Motil. 2023;35:e14613. 10.1111/nmo.14613
- Suzuki S, Obara T, Ishikawa T, Noda A, Matsuzaki F, et al. No association between major congenital malformations and exposure to Kampo medicines containing rhubarb rhizome: A Japanese database study. Front Pharmacol. 2023;14:1107494. 10.3389/fphar.2023.1107494
- Kistemaker KRJ, de Graeff A, Crul M, de Klerk G, van de Ven PM, et al. Magnesium hydroxide versus macrogol/electrolytes in the prevention of opioid-induced constipation in incurable cancer patients: study protocol for an open-label, randomized controlled trial (the OMAMA study). BMC Palliat Care. 2023;22:22. 10.1186/s12904-023-01143-2
- Wu S, Jin T, Ma B, Ji Y, Huang X, et al. Oral application of magnesium-L-threonate enhances analgesia and reduces the dosage of opioids needed in advanced cancer patients-A randomized, double-blind, placebo-controlled trial. Cancer Med. 2023;12:4343. 10.1002/cam4.4922
- Maezawa M, Inoue M, Satake R, Wakabayashi W, Oura K, et al. Effect of acid suppressant medications on the laxative action of magnesium preparations in patients with opioid-induced constipation: A pharmacovigilance analysis of the FDA Adverse Event Reporting System. Pharmazie. 2023;78:245. 10.1691/ph.2023.3624
- Takemura M, Niki K, Miyaguchi S, Ueda M. Naldemedine-laxative combination: retrospective inpatient study. BMJ Support Palliat Care. 2024;13:e816. 10.1136/spcare-2022-003685
- Worona-Dibner L, Vázquez-Frias R, Valdez-Chávez L, Verdiguel-Oyola M. Efficacy, safety, and acceptability of polyethylene glycol 3350 without electrolytes vs magnesium hydroxide in functional constipation in children from six months to eighteen years of age: A controlled clinical trial. Rev Gastroenterol Mex (Engl Ed). 2023;88:107. 10.1016/j.rgmxen.2021.12.005
- de Campos GRC, Sandy NS, Lomazi EA, Bellomo-Brandao MA. Management of children with functional constipation referred to tertiary care. J Pediatr (Rio J). 2022;98:289. 10.1016/j.jped.2021.06.006
- Rao SSC, Brenner DM. Efficacy and Safety of Over-the-Counter Therapies for Chronic Constipation: An Updated Systematic Review. Am J Gastroenterol. 2021;116:1156. 10.14309/ajg.0000000000001222
- Hassanein SMA, Deifallah SM, Bastawy HA. Efficacy of oral magnesium therapy in the treatment of chronic constipation in spastic cerebral palsy children: a randomized controlled trial. World J Pediatr. 2021;17:92. 10.1007/s12519-020-00401-0
- Morishita D, Tomita T, Mori S, Kimura T, Oshima T, et al. Senna Versus Magnesium Oxide for the Treatment of Chronic Constipation: A Randomized, Placebo-Controlled Trial. Am J Gastroenterol. 2021;116:152. 10.14309/ajg.0000000000000942
- Kubota M, Ito K, Tomimoto K, Kanazaki M, Tsukiyama K, et al. Lactobacillus reuteri DSM 17938 and Magnesium Oxide in Children with Functional Chronic Constipation: A Double-Blind and Randomized Clinical Trial. Nutrients. 2020;12. 10.3390/nu12010225
- Ohkubo H, Yoshihara T, Misawa N, Ashikari K, Fuyuki A, et al. Relationship between Stool Form and Quality of Life in Patients with Chronic Constipation: An Internet Questionnaire Survey. Digestion. 2021;102:147. 10.1159/000502815
- Dupont C, Constant F, Imbert A, Hébert G, Zourabichvili O, et al. Time to treatment response of a magnesium- and sulphate-rich natural mineral water in functional constipation. Nutrition. 2019;65:167. 10.1016/j.nut.2019.02.018
- Tsuji S, Horiuchi A, Tamaki M, Ichise Y, Kajiyama M, et al. Effectiveness and safety of a new regimen of polyethylene glycol plus ascorbic acid for same-day bowel cleansing in constipated patients. Acta Gastroenterol Belg. 2018;81:485.
