Overview

SCIENTIFIC SCORE
Questionable
Based on 23 Researches
6.6
USERS' SCORE
Moderately Good
Based on 28 Reviews
7.4
Supplement Facts
Serving Size: 1 Veg Capsule
Amount Per Serving
%DV
Magnesium (elemental) (from Magnesium Oxide, Magnesium Citrate and Magnesium Aspartate)
400 mg
95%

Top Medical Research Studies

9
Magnesium implantation improves heart recovery
We explored the potential of magnesium implantation as a new approach to combat heart attacks, specifically myocardial infarction (MI). Our research centered on using magnesium slices implanted under the skin of rats to generate hydrogen gas continuously. This method could ensure a greater and longer-lasting concentration of hydrogen directly reaching the heart, which is crucial for its therapeutic effects.

Through our study, we measured how effectively the magnesium produced hydrogen and evaluated its safety. The results were promising; we observed that magnesium implantation not only improved cardiac function in rats suffering from MI, but also played a role in eliminating harmful free radicals from mitochondrial dysfunction. Furthermore, it helped reduce cell death in heart muscle cells, which is a common consequence of heart attacks.

Compared to traditional hydrogen inhalation, which has limitations in delivering sufficient doses over time, magnesium implantation proved to be a superior method. Overall, our findings pave the way for innovative treatments that could enhance recovery after heart attacks by harnessing the unique properties of magnesium for hydrogen production.
Read More
8
Magnesium levels impact heart attack outcomes
We examined whether serum magnesium levels at admission could predict in-hospital outcomes for patients experiencing a heart attack.

In our study of 259 acute myocardial infarction patients, those with lower magnesium levels (below 1.82 mg/dl) faced significantly higher risks of complications, including arrhythmias and even death, compared to those with healthier levels.

Our findings suggest that maintaining adequate magnesium levels is essential for better health outcomes after a heart attack.
Read More
5
OCT and angiography show comparable effectiveness
We examined how two guidance methods—optical coherence tomography (OCT) and angiography—perform during magnesium bioresorbable scaffold (MBRS) implantation in patients recovering from a non-ST-elevation heart attack.

With 75 participants, our study revealed that both techniques resulted in comparable healing patterns after six months. Though OCT-guided intervention showed slightly better outcomes in certain technical measures, neither approach demonstrated a significant advantage in overall heart healing.

Thus, for NSTEMI patients, choosing between OCT and angiography for MBRS placement may depend on other factors, as both methods appear effective.
Read More

Most Useful Reviews

8
Normalised heart rhythm
4 people found this helpful
This magnesium is easy to take and the dosage is good. I've observed positive effects, such as reduced seizures in an elderly person and calmer demeanour. It assists in normalising heart rhythm, but I recommend other sedative options for a better effect.
Read More
7.5
Eased heart pain
4 people found this helpful
I’ve been happy with this product, as it helps ease muscle tension and relieve restless leg syndrome. It also alleviates heart pain associated with ME/CFS. I recently discovered a chelated version that may be superior, so I’ll switch to that in future.
Read More
7.5
Stable heart function
546 people found this helpful
I consider these capsules essential for managing my heart health, particularly due to my atrial fibrillation. I've taken this complex for two years and have noticed improved stability in my heart rhythm, even during moments of stress. The capsules are easy to swallow, although my wife prefers to mix the powder into her meals. I highly recommend this product!
Read More

Medical Researches

SCIENTIFIC SCORE
Questionable
Based on 23 Researches
6.6
  • All Researches
9
Magnesium implantation improves heart recovery
We explored the potential of magnesium implantation as a new approach to combat heart attacks, specifically myocardial infarction (MI). Our research centered on using magnesium slices implanted under the skin of rats to generate hydrogen gas continuously. This method could ensure a greater and longer-lasting concentration of hydrogen directly reaching the heart, which is crucial for its therapeutic effects.

Through our study, we measured how effectively the magnesium produced hydrogen and evaluated its safety. The results were promising; we observed that magnesium implantation not only improved cardiac function in rats suffering from MI, but also played a role in eliminating harmful free radicals from mitochondrial dysfunction. Furthermore, it helped reduce cell death in heart muscle cells, which is a common consequence of heart attacks.

Compared to traditional hydrogen inhalation, which has limitations in delivering sufficient doses over time, magnesium implantation proved to be a superior method. Overall, our findings pave the way for innovative treatments that could enhance recovery after heart attacks by harnessing the unique properties of magnesium for hydrogen production.
Read More
9
Magnesium scaffolds improve heart attack outcomes
We examined the performance of two types of bioresorbable scaffolds in patients experiencing acute coronary syndrome (ACS) - a common and serious manifestation of heart disease. Specifically, we compared the effectiveness of magnesium-based scaffolds, known as Magmaris, with the earlier polymer scaffolds called Absorb.

Our study included 193 patients using Magmaris and 160 patients using Absorb, all treated in similar clinical settings. Over the course of one year, we monitored their health outcomes, particularly focusing on serious issues like cardiac death, heart attacks, and instances of scaffold thrombosis.

Surprisingly, we found that patients with Magmaris had significantly better outcomes than those with Absorb. Specifically, the rates of primary complications and target lesion failures were notably lower with Magmaris. We noted a concerning trend with Absorb, where patients experienced a higher rate of scaffold thrombosis.

Overall, our findings suggest that magnesium-based scaffolds could provide a safer and more effective option for patients undergoing treatment for heart attacks compared to their polymer counterparts.
Read More
8
Magnesium enhances heart attack recovery
We explored an innovative approach to treating myocardial infarction (MI) by using a special composite hydrogel that incorporates magnesium-modified black phosphorus nanosheets. This treatment aims to address the significant changes in the heart's environment after a heart attack, which are usually detrimental to recovery.

The research involved creating a hydrogel scaffold that allows for the gradual release of these magnesium-enhanced nanosheets directly at the site of the infarct. This is particularly important because sustained release helps to manage oxidative stress and inflammation, both common issues following a heart attack.

We observed that the black phosphorus nanosheets have a high reactivity with reactive oxygen species (ROS), which helps reduce oxidative stress and inflammation in the heart. Additionally, the magnesium contributes to promoting blood vessel growth, or angiogenesis, which is crucial for long-term heart function after an MI.

Overall, the findings of this study suggest that the combination of these elements in the hydrogel can effectively block further damage from the heart attack and improve recovery outcomes, signaling a promising avenue for heart attack treatments in the future.
Read More
8
Magnesium improves heart recovery
In our investigation, we set out to understand how magnesium lithospermate B (MLB) can aid heart repair following a heart attack. We used a mouse model with surgically induced myocardial infarction (MI) and categorized the mice into five groups, including those treated with MLB and human-induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs). By comparing different treatments, we evaluated the heart's recovery over four weeks through echocardiography and histochemical staining.

Our findings revealed that MLB significantly enhances the function of hiPSC-CMs, helping to repair the damaged heart muscle. This improvement happens by boosting the function of endothelial cells—important for blood vessel health—through a specific signaling pathway. Additionally, MLB decreases apoptosis, or cell death, in hiPSC-CMs by activating another pathway, which further supports heart recovery.

Overall, our work underscores the role of MLB in improving heart repair after a heart attack. While it was tested in tandem with hiPSC-CMs, which makes it an interesting combination for treatment strategies, it's clear that the integration of MLB can potentially enhance cardiac recovery mechanisms effectively.
Read More
8
Low magnesium indicates higher mortality
We explored how serum magnesium levels at the time of hospital admission affect the long-term health of patients experiencing a non-ST-elevation myocardial infarction (NSTEMI). In our analysis of data from over 4,500 patients, we focused on the differences between those with low serum magnesium levels—defined as below 1.9 mg/dL—and those with normal or higher levels.

Our findings indicate that patients with low magnesium levels were older, had more health complications like diabetes and hypertension, and faced a higher long-term risk of mortality. Specifically, we observed that 34% of patients with low magnesium levels died within four years, compared to 22% of those with adequate levels.

Importantly, even after adjusting for factors such as sex, existing health conditions, and interventions received during hospitalization, low serum magnesium levels still correlated with a significantly increased risk of death by 24%. While we revealed that low magnesium levels could be a concerning signal for NSTEMI patients, we did not assess the effects of magnesium treatment directly in this study.

Overall, this research brings to light the potential importance of monitoring magnesium levels in the clinical setting, highlighting how they may relate to long-term outcomes for heart attack patients.
Read More

User Reviews

USERS' SCORE
Moderately Good
Based on 28 Reviews
7.4
  • All Reviews
  • Positive Reviews
  • Negative Reviews
8
Normalised heart rhythm
4 people found this helpful
This magnesium is easy to take and the dosage is good. I've observed positive effects, such as reduced seizures in an elderly person and calmer demeanour. It assists in normalising heart rhythm, but I recommend other sedative options for a better effect.
Read More
7.5
Eased heart pain
4 people found this helpful
I’ve been happy with this product, as it helps ease muscle tension and relieve restless leg syndrome. It also alleviates heart pain associated with ME/CFS. I recently discovered a chelated version that may be superior, so I’ll switch to that in future.
Read More
7.5
Stable heart function
546 people found this helpful
I consider these capsules essential for managing my heart health, particularly due to my atrial fibrillation. I've taken this complex for two years and have noticed improved stability in my heart rhythm, even during moments of stress. The capsules are easy to swallow, although my wife prefers to mix the powder into her meals. I highly recommend this product!
Read More
7.5
Improved heart rhythm
256 people found this helpful
I've been using this complex for two years and my heart rhythm is more stable during stressful situations. The capsules are small and easy to take; my wife, however, pours the powder into her food. This magnesium is excellent value for money and effectively supports my heart health, especially when taken at night.
Read More
0
Ineffective magnesium
48 people found this helpful
Four of us tried it and it's dreadful! I usually like NOW Foods products, but this one was worthless. It had no effect on my heart rate or relaxation. If seeking a quality magnesium supplement, try UltraMag from Source Naturals.
Read More

Frequently Asked Questions

7.5
Stable heart function
546 people found this helpful
I consider these capsules essential for managing my heart health, particularly due to my atrial fibrillation. I've taken this complex for two years and have noticed improved stability in my heart rhythm, even during moments of stress. The capsules are easy to swallow, although my wife prefers to mix the powder into her meals. I highly recommend this product!
7.5
Stronger nervous system
4 people found this helpful
This vitamin greatly assists my heart. I've noticed a strengthening in my nervous system, no more calf muscle spasms, improved sleep, and reduced ear tingling. It also helps regulate my blood pressure.
6
Reduced heart palpitations
4 people found this helpful
I like this product. It has reduced my muscle cramps and the occasional heart palpitations. When I ran out for six weeks, my palpitations returned. At 67, I find the capsule formula preferable, as tablets can be challenging to swallow when they dissolve in my mouth.
7.5
Reduced arrhythmia tremors
2 people found this helpful
I’ve had arrhythmic heartbeats and suspect magnesium deficiency. After taking this supplement, my tremors have significantly decreased, and the dosage is adequate. I'm happy to continue using it.
7.5
Eased heart pain
4 people found this helpful
I’ve been happy with this product, as it helps ease muscle tension and relieve restless leg syndrome. It also alleviates heart pain associated with ME/CFS. I recently discovered a chelated version that may be superior, so I’ll switch to that in future.
7.5
Alleviates palpitations
1 people found this helpful
I’ve been pleased with this magnesium supplement; it has eased my chronic constipation and significantly calms my heart palpitations caused by "skipped beats." If I take one whenever I have issues, it resolves quickly, which helps prevent heart attack.
7.5
Mood enhancement
1 people found this helpful
This magnesium has truly become a family favourite! Since starting it, I’ve felt more cheerful and alive, and I believe it significantly helps with my mental health, which is crucial for preventing heart attack.
9
Balances heart rate
1 people found this helpful
The capsules are large but easy to swallow, and I’ve noticed deep sleep and reduced cravings for sweets since using them. This supplement normalises heart rate, lowers blood pressure, and could really help in preventing heart attack.
7.5
Stress relief
2 people found this helpful
I’ve found that taking two capsules replenishes my magnesium deficiency, and alongside B vitamins, it’s helped me avoid nervous breakdowns at work and improve my sleep. I highly recommend it for alleviating stress and supporting heart health to prevent heart attacks!
0
Ineffective magnesium
48 people found this helpful
Four of us tried it and it's dreadful! I usually like NOW Foods products, but this one was worthless. It had no effect on my heart rate or relaxation. If seeking a quality magnesium supplement, try UltraMag from Source Naturals.
0
Negative side effects
A complete waste of money! Magnesium should help relax muscles and promote calm and sleep, yet I experience stomachaches, heart palpitations, and worsened sleep. Another 400mg product works perfectly, unlike this Now product. Very disappointed.
0
Possible heart issues
8 people found this helpful
I developed pericarditis after trying this blend. The magnesium aspartate likely triggered my symptoms, resembling a heart attack but resolving when seated. I’m sensitive to stimulants, and this caused severe reactions. I cannot recommend this product.
9
Overall health aid
1 people found this helpful
NOW Foods Magnesium Capsules are vital for heart, muscle, and nervous system health. Each capsule contains 400 mg to support overall well-being and mitigate the risk of heart attack.
7.5
Eases tachycardia
1 people found this helpful
Magnesium is prescribed by every cardiologist I consult. I’ve taken it for years; it has significantly reduced my tachycardia, although my ECG still shows abnormalities. It’s a reliable aid for preventing heart attacks.
8
Magnesium levels impact heart attack outcomes
We examined whether serum magnesium levels at admission could predict in-hospital outcomes for patients experiencing a heart attack.

In our study of 259 acute myocardial infarction patients, those with lower magnesium levels (below 1.82 mg/dl) faced significantly higher risks of complications, including arrhythmias and even death, compared to those with healthier levels.

Our findings suggest that maintaining adequate magnesium levels is essential for better health outcomes after a heart attack.
4
Magnesium's impact on heart health
We aimed to explore the connection between serum magnesium levels and cardiac complications in patients who experienced heart attacks, specifically acute myocardial infarction. The study focused on 160 patients admitted to the Prince Faisal Bin Khalid Cardiac Center shortly after their symptoms began. We measured their serum magnesium levels on the first and fifth days of hospitalization.

Our findings revealed that over half of the patients had low magnesium levels upon admission. Notably, those with decreased magnesium were more likely to have diabetes, a history of diuretic use, and were medicated with beta-blockers, calcium channel blockers, and statins. Unfortunately, this group also experienced serious complications such as atrial fibrillation and cardiogenic shock more frequently.

Ultimately, lower magnesium levels were linked to poorer outcomes in these heart attack patients. This suggests that magnesium might play a significant role in the health status of individuals suffering from this critical condition, although the effectiveness of direct magnesium treatment remains unclear given the various medications and factors at play.
8
Encouraging early magnesium scaffold results
We investigated the use of a magnesium-based scaffold, specifically a sirolimus-eluting bioresorbable magnesium scaffold (Mg-BRS), in patients who suffered from acute myocardial infarction (AMI). Our multicenter analysis of 69 subjects showed that the procedure was successful without any in-hospital complications.

At the nine-month mark, we found no incidents of cardiac death, further myocardial infarction, or scaffold-related thrombosis. While these initial results are promising, we recognize the need for larger studies and longer follow-ups to fully grasp the benefits of magnesium scaffolds in treating AMI.

References

  1. Demirtola Aİ, Mammadli A, Çiçek G. The Role of Magnesium Levels in the Progression of Contrast-Induced Nephropathy in Patients With STEMI Undergoing Primary PCI. Angiology. 2025. 10.1177/00033197251314629
  2. Jin Y, Lin Q, Wang D, Gong M, Huang W, et al. Hypomagnesemia is a Risk Factor for Acute Kidney Injury in Patients Admitted With ST-Segment Elevation Myocardial Infarction: A Retrospective Observational Study. J Ren Nutr. 2024. 10.1053/j.jrn.2024.12.006
  3. Naveen V, Rajesh Lenin R, Stanley LM, Kumar JS. Serum Magnesium Levels and QTc Interval Prolongation As Prognostic Markers in Acute Myocardial Infarction: A Randomized Controlled Study. Cureus. 2024;16:e66051. 10.7759/cureus.66051
  4. Zhuang J, Zhang Q, Wang H, Su PH, Chen PY. Association between short-term changes in serum magnesium and in-hospital mortality following acute myocardial infarction: a cohort study based on the MIMIC database. Magnes Res. 2024;37:45. 10.1684/mrh.2024.0517
  5. Zhang J, Sun D, Guo Y, Tong J, Liu Q, et al. Targeted delivery of black phosphorus nanosheets by ROS responsive complex hydrogel based on angiogenesis and antioxidant promotes myocardial infarction repair. J Nanobiotechnology. 2024;22:433. 10.1186/s12951-024-02685-0
  6. Wang B, Pan S, Nie C, Zou R, Liu J, et al. Magnesium implantation as a continuous hydrogen production generator for the treatment of myocardial infarction in rats. Sci Rep. 2024;14:10959. 10.1038/s41598-024-60609-2
  7. Fan C, Qin K, Iroegbu CD, Xiang K, Gong Y, et al. Magnesium lithospermate B enhances the potential of human-induced pluripotent stem cell-derived cardiomyocytes for myocardial repair. Chin Med J (Engl). 2024;137:1857. 10.1097/CM9.0000000000002867
  8. Segev A, Shechter M, Tsur AM, Belkin D, Cohen H, et al. Serum Magnesium Is Associated with Long-Term Survival of Non-ST-Elevation Myocardial Infarction Patients. Nutrients. 2023;15. 10.3390/nu15194299
  9. Włodarczak A, Rola P, Barycki M, Furtan Ł, Łanocha M, et al. Mid-term safety and efficacy of magnesium bioresorbable vascular scaffolds - magmaris in diabetic population. 2-Years outcome in acute coronary syndrome cohort. Diab Vasc Dis Res. 2023;20:14791641231188705. 10.1177/14791641231188705
  10. Sabah Z, Wani J, Deajim M, Al Zomia AS, Asiri A, et al. Serum Magnesium in Patients With Acute Myocardial Infarction and Its Effect on Cardiac Complications and Mortality in Myocardial Infarction Patients. Cureus. 2023;15:e38147. 10.7759/cureus.38147
  11. An P, Wan S, Luo Y, Luo J, Zhang X, et al. Micronutrient Supplementation to Reduce Cardiovascular Risk. J Am Coll Cardiol. 2022;80:2269. 10.1016/j.jacc.2022.09.048
  12. Evers I, Cruijsen E, Kornaat I, Winkels RM, Busstra MC, et al. Dietary magnesium and risk of cardiovascular and all-cause mortality after myocardial infarction: A prospective analysis in the Alpha Omega Cohort. Front Cardiovasc Med. 2022;9:936772. 10.3389/fcvm.2022.936772
  13. Rola P, Włodarczak A, Łanocha M, Barycki M, Szudrowicz M, et al. Outcomes of the two generations of bioresorbable scaffolds (Magmaris vs. Absorb) in acute coronary syndrome in routine clinical practice. Cardiol J. 2022;30:870. 10.5603/CJ.a2022.0047
  14. Ortega-Paz L, Brugaletta S, Gomez-Lara J, Alfonso F, Cequier A, et al. Magnesium-based resorbable scaffold vs permanent metallic sirolimus-eluting stent in patients with ST-segment elevation myocardial infarction: 3-year results of the MAGSTEMI randomised controlled trial. EuroIntervention. 2022;18:e389. 10.4244/EIJ-D-21-00651
  15. Hasan MZ, Nahar K, Sharif JU, Paul SC, Thakur AK, et al. Serum Magnesium Level and It's Relation in Predicting Adverse In-Hospital Outcome in Patients with First Attack of Myocardial Infarction. Mymensingh Med J. 2023;32:65.
  16. Fallesen CO, Antonsen L, Maehara A, Noori M, Hougaard M, et al. Optical Coherence Tomography- Versus Angiography-Guided Magnesium Bioresorbable Scaffold Implantation in NSTEMI Patients. Cardiovasc Revasc Med. 2022;40:101. 10.1016/j.carrev.2021.12.003
  17. Włodarczak A, Łanocha M, Lesiak M, Benett J, Szudrowicz M, et al. Long-term clinical follow-up of the resorbable magnesium scaffolds in acute coronary syndrome patients. Kardiol Pol. 2021;79:827. 10.33963/KP.a2021.0035
  18. Açıkgöz E, Açıkgöz SK, Çiçek G. Serum magnesium concentration may predict no-reflow phenomenon in primary angioplasty for ST-elevation myocardial infarction. Magnes Res. 2020;33:123. 10.1684/mrh.2021.0477
  19. Shlezinger M, Amitai Y, Goldenberg I, Atar S, Shechter M. Acute myocardial infarction severity, complications, and mortality associated with lack of magnesium intake through consumption of desalinated seawater. Magnes Res. 2019;32:39. 10.1684/mrh.2019.0449
  20. Sabaté M, Alfonso F, Cequier A, Romaní S, Bordes P, et al. Magnesium-Based Resorbable Scaffold Versus Permanent Metallic Sirolimus-Eluting Stent in Patients With ST-Segment Elevation Myocardial Infarction: The MAGSTEMI Randomized Clinical Trial. Circulation. 2019;140:1904. 10.1161/CIRCULATIONAHA.119.043467
  21. Ielasi A, Cerrato E, Geraci S, Campo G, Garro N, et al. Sirolimus-Eluting Magnesium Resorbable Scaffold Implantation in Patients with Acute Myocardial Infarction. Cardiology. 2019;142:93. 10.1159/000499536
  22. Lee TM, Chang NC, Lin SZ. Effect of proton pump inhibitors on sympathetic hyperinnervation in infarcted rats: Role of magnesium. PLoS One. 2018;13:e0202979. 10.1371/journal.pone.0202979
  23. de Hemptinne Q, Picard F, Briki R, Awada A, Silance PG, et al. Drug-Eluting Resorbable Magnesium Scaffold Implantation in ST-Segment Elevation Myocardial Infarction: A Pilot Study. J Invasive Cardiol. 2018;30:202.
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