Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 18 Researches
7.7
USERS' SCORE
Good
Based on 13 Reviews
8.7
Supplement Facts
Serving Size:  3 Capsules
Amount Per Serving
%DV
Vitamin B6 (as pyridoxine hydrochloride)
10 mg
588%
Magnesium (as magnesium aspartate, magnesium oxide)
435 mg
104%
Zinc (as zinc aspartate, zinc monomethionine, zinc oxide)
28 mg
255%

Top Medical Research Studies

9
Magnesium improves elderly insomnia
We conducted a double-blind, placebo-controlled clinical trial to investigate the effects of magnesium supplementation on insomnia in elderly individuals. Our study involved 46 participants who were assigned either to receive 500 mg of magnesium daily or a placebo for a duration of 8 weeks.

Throughout the study, we employed various questionnaires, including the Insomnia Severity Index (ISI), to evaluate the participants' sleep quality both before and after the treatment period. We also monitored the intake of other nutrients and performed blood tests to assess hormone levels related to sleep.

The results showed that magnesium supplementation led to significant improvements in areas such as sleep efficiency, sleep onset timing, and overall insomnia severity. We observed increases in serum levels of melatonin and changes in cortisol and renin levels, indicating a physiological response that could enhance sleep quality.

Overall, it seems that supplementing with magnesium has the potential to improve sleep for older adults struggling with insomnia. This finding could pave the way for new, accessible treatment options for those affected by sleep disorders.
Read More
We explored the effects of zinc on sleep by looking at how it might help with insomnia. In our study, we gave mice a zinc-containing yeast extract and monitored their behavior and brain activity. The results were quite promising.

We found that administering zinc at doses of 40 and 80 mg/kg led to a significant increase in non-rapid eye movement (NREM) sleep. This means that the mice were not only sleeping longer but also showed less activity, which is a good indicator of effective sleep. Interestingly, we did not observe any changes in rapid eye movement (REM) sleep, a crucial sleep phase for dreaming and deep rest.

Importantly, we didn’t see any negative side effects, such as rebound insomnia, within 24 hours after treating the mice. This suggests that zinc could be a safe option for those struggling with sleep issues, unlike other mineral extracts we tested, such as manganese, iron, and copper, which did not affect locomotor activity at all.

Overall, our findings provide the first evidence that zinc has a direct role in promoting sleep, opening up exciting possibilities for new sleep supplements featuring this essential mineral.
Read More
4
Magnesium shows limited sleep benefits
We explored the effects of magnesium supplementation on insomnia in older adults through a systematic review and meta-analysis. Our investigation included several studies that compared magnesium with a placebo or no treatment.

We found three randomized control trials involving 151 older adults across three countries. The pooled results indicated that individuals taking magnesium had a notable decrease in sleep onset latency, averaging a reduction of 17.36 minutes compared to those on placebo. However, the improvement in total sleep time, which increased by 16.06 minutes in the magnesium group, did not reach statistical significance.

Despite these findings, we must emphasize that the overall quality of the research is below standards necessary for making firm recommendations. All studies reviewed showed a moderate to high risk of bias, and the evidence quality ranged from low to very low. Nonetheless, magnesium is an affordable and widely accessible option for those struggling with insomnia symptoms, suggesting it may be a reasonable consideration for some older adults.
Read More

Most Useful Reviews

9.5
Wonderful sleep aid
I’m not a gym enthusiast but gave ZMA a try for its sleep aid properties. I occasionally suffer from insomnia, and it has worked wonders for me. An hour after taking it, I feel calm and then I’m quickly off to sleep. While I can’t verify its claims about testosterone, it’s indisputably a great sleep aid!
Read More
8.8
Induces deep sleep
After battling insomnia, I began taking ZMA daily and found it effective within days. I now fall asleep quicker and enjoy deep sleep. While I feel muscle recovery is faster, I attribute this mostly to the quality of sleep. I’ve also started recalling vivid dreams, which adds to the experience.
Read More
9.5
Stronger sleep
This helps my husband with his insomnia. He takes three capsules at night, and his sleep has become stronger and deeper. We are delighted!
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 18 Researches
7.7
  • All Researches
9
Vitamin B6 could aid insomnia
We set out to investigate how vitamin B6 contributes to improving sleep quality in individuals experiencing mild to moderate insomnia. Our study involved 40 participants who were given a combination treatment containing melatonin, vitamin B6, and extracts from various medicinal plants.

Over a period of two weeks, participants documented their sleep experiences using a daily electronic diary. We analyzed changes in sleep quality, total sleep duration, and how well our treatment reduced sleep-related daytime impairments. Encouragingly, participants reported a significant improvement in sleep quality, with an average score rise from 5.4 to 7.3 on a 10-point scale.

Although it is difficult to isolate the specific effects of vitamin B6 alone due to its use alongside other ingredients, our findings do suggest that this vitamin, when combined with melatonin and plant extracts, could support better sleep. Importantly, the treatment was well-tolerated, with no serious side effects reported.

Overall, while vitamin B6 on its own wasn’t examined, its inclusion in a combination treatment appears to play a role in enhancing sleep quality for those struggling with insomnia.
Read More
We explored the potential benefits of a supplement containing magnesium, melatonin, and vitamin B complex in treating insomnia. The study involved 60 patients diagnosed with insomnia, who were divided into a study group and a control group. Over three months, the study group received a daily dose of the supplement, while the control group did not receive it.

At the start, both groups had similar levels of insomnia, indicated by their scores on the Athens insomnia scale. However, after three months of supplementation, the study group showed a significant improvement, with their insomnia scores decreasing, indicating mild insomnia. In contrast, the control group’s scores remained stable, suggesting they continued to experience moderate insomnia.

Although magnesium was part of the supplement, the study design makes it challenging to isolate its specific effects on insomnia. Nevertheless, we observed that combining magnesium with melatonin and vitamin B complex potentially enhances sleep quality for those struggling with insomnia.
Read More
9
Magnesium improves elderly insomnia
We conducted a double-blind, placebo-controlled clinical trial to investigate the effects of magnesium supplementation on insomnia in elderly individuals. Our study involved 46 participants who were assigned either to receive 500 mg of magnesium daily or a placebo for a duration of 8 weeks.

Throughout the study, we employed various questionnaires, including the Insomnia Severity Index (ISI), to evaluate the participants' sleep quality both before and after the treatment period. We also monitored the intake of other nutrients and performed blood tests to assess hormone levels related to sleep.

The results showed that magnesium supplementation led to significant improvements in areas such as sleep efficiency, sleep onset timing, and overall insomnia severity. We observed increases in serum levels of melatonin and changes in cortisol and renin levels, indicating a physiological response that could enhance sleep quality.

Overall, it seems that supplementing with magnesium has the potential to improve sleep for older adults struggling with insomnia. This finding could pave the way for new, accessible treatment options for those affected by sleep disorders.
Read More
We conducted a double-blind, placebo-controlled clinical trial in a long-term care facility in Italy to explore whether nightly doses of melatonin, magnesium, and zinc could benefit residents suffering from primary insomnia. Our study involved 43 participants, who were either given a combined supplement of these nutrients or a placebo for eight weeks.

The primary objective was to measure sleep quality using the Pittsburgh Sleep Quality Index, while we also considered secondary indicators like daytime sleepiness and overall quality of life. The results revealed that the combined approach of melatonin, magnesium, and zinc appeared to improve both sleep and quality of life for residents struggling with insomnia.

However, since magnesium was tested alongside two other supplements, we cannot clearly attribute the benefits directly to magnesium alone. Overall, the findings suggest a positive effect on sleep quality and well-being for long-term care residents dealing with insomnia, but we must be cautious in isolating each nutrient's individual effectiveness.
Read More
We conducted a double-blind, placebo-controlled study in a long-term care facility in Italy to assess whether nightly supplementation of melatonin, magnesium, and zinc could help improve primary insomnia in elderly residents. A total of 43 participants, mostly in their late 70s, were divided into two groups: one received a combination of these supplements, while the other received a placebo for eight weeks.

Throughout the study, we focused on measuring sleep quality using several tools, including the Pittsburgh Sleep Quality Index and the Epworth Sleepiness Scale. After two months, we found that the group taking melatonin, magnesium, and zinc showed improvements in sleep quality and overall quality of life compared to the placebo group.

While the results are promising for the combination of these supplements, it's important to note that this study makes it challenging to determine the specific role that zinc alone may play in addressing insomnia. Nonetheless, the findings suggest that this combination could be beneficial for sleep in long-term care residents experiencing primary insomnia.
Read More

User Reviews

USERS' SCORE
Good
Based on 13 Reviews
8.7
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Wonderful sleep aid
I’m not a gym enthusiast but gave ZMA a try for its sleep aid properties. I occasionally suffer from insomnia, and it has worked wonders for me. An hour after taking it, I feel calm and then I’m quickly off to sleep. While I can’t verify its claims about testosterone, it’s indisputably a great sleep aid!
Read More
8.8
Induces deep sleep
After battling insomnia, I began taking ZMA daily and found it effective within days. I now fall asleep quicker and enjoy deep sleep. While I feel muscle recovery is faster, I attribute this mostly to the quality of sleep. I’ve also started recalling vivid dreams, which adds to the experience.
Read More
9.5
Stronger sleep
This helps my husband with his insomnia. He takes three capsules at night, and his sleep has become stronger and deeper. We are delighted!
Read More
9.5
Effective sleep solution
I experience insomnia and have difficulty sleeping after exercising, but this resolved my issue. It’s very beneficial.
Read More
9.5
Greatly reduces insomnia
It is regarded as a beneficial vitamin. I feel that the best outcome has been improved sleep, thanks to the magnesium, which has significantly reduced my insomnia.
Read More

Frequently Asked Questions

Insomnia is a common sleep disorder characterized by the inability to fall asleep, stay asleep, or wake up too early and not be able to go back to sleep. Individuals experiencing insomnia may find that it affects their daytime functioning, leading to issues such as fatigue, mood disturbances, and difficulty concentrating. Insomnia can be classified into two main types: acute insomnia, which lasts for a short period often triggered by stress or life changes, and chronic insomnia, which occurs at least three times a week for three months or longer, and may require more in-depth evaluation and treatment.

Numerous factors can contribute to insomnia, including stress, anxiety, poor sleep habits, medical conditions, and the use of certain medications. Treatment for insomnia typically involves a combination of lifestyle changes, cognitive behavioral therapy for insomnia (CBT-I), and sometimes medication. Establishing a consistent sleep routine, creating a comfortable sleep environment, and practicing relaxation techniques can help improve sleep quality. If insomnia persists, it is advisable to consult a healthcare professional for proper diagnosis and customized treatment options.

Zinc Magnesium Aspartate, often referred to as ZMA, is a dietary supplement that combines three key ingredients: zinc, magnesium, and aspartic acid. This supplement is primarily marketed towards athletes and those looking to enhance their physical performance, as the components of ZMA are believed to support muscle recovery, improve sleep quality, and potentially boost testosterone levels. Zinc plays a crucial role in hormone production and immune function, while magnesium is essential for muscle relaxation and energy production. Aspartic acid, an amino acid, is thought to aid in the absorption of these minerals and may also support testosterone synthesis.

Many users report increased energy levels, improved sleep, and enhanced recovery from workouts when taking ZMA, making it a popular choice among fitness enthusiasts. However, scientific research on the effectiveness of ZMA is mixed. While some studies suggest benefits in testosterone levels and overall athletic performance, others show little to no significant impact. It's important to note that, like any supplement, individual responses can vary widely. If you're considering adding Zinc Magnesium Aspartate to your routine, it’s advisable to consult with a healthcare professional to ensure it's appropriate for your specific health needs and fitness goals.

The relationship between Zinc Magnesium Aspartate and insomnia is not directly established through substantial scientific research. Zinc and magnesium are both essential minerals that play roles in various bodily functions, including sleep regulation. Magnesium, in particular, is known for its ability to promote relaxation and may help improve sleep quality by acting on neurotransmitters that regulate sleep cycles. Some studies have suggested that magnesium supplementation can benefit those suffering from insomnia, but results can vary between individuals.

Zinc has its own benefits for health, including support for immune function and metabolism, but its specific impact on sleep can be less clear. While some people report better sleep after taking Zinc Magnesium Aspartate supplements, this isn't universally supported by clinical evidence. Therefore, while there is a possibility that this combination could help two key areas related to sleep and rejuvenation, it's essential to approach supplementation with caution. Consulting with a healthcare professional for tailored advice and considering lifestyle factors that affect sleep may lead to more effective strategies for managing insomnia.

Based on user reviews, the timeframe for experiencing results from this supplement for insomnia can vary from a couple of weeks to about a month. One user noted that after two weeks of taking the supplement, they began to see improvements in their sleep quality, stating they were able to sleep later without anxiety over insomnia (Read Review). In contrast, another user mentioned a noticeable enhancement in sleep quality and daytime energy after approximately a month of consistent use (Read Review).

Users have reported varying experiences, with many noting a gradual improvement as the supplement begins to take effect. This suggests that while some may find relief sooner, a month might be a reasonable expectation for those seeking significant results. Overall, patience is key, as individual responses to sleep supplements can differ significantly.

The scientific research supports the efficacy of a supplement containing magnesium, melatonin, and vitamin B6 in alleviating insomnia symptoms. One well-conducted study involving 60 individuals demonstrated that participants who took this combination significantly improved their insomnia scores compared to a control group, transitioning from moderate to mild insomnia levels after three months of daily supplementation [8]. Although the exact contribution of vitamin B6 remains uncertain due to its combination with magnesium and melatonin, the overall results indicate that these three ingredients may work synergistically to enhance sleep quality and duration for individuals struggling with insomnia.

Further exploration of magnesium alone also yields promising results. A systematic review of 15 studies highlighted that magnesium supplementation is associated with improved sleep quality in various populations, although results varied by study [6]. Another trial focused specifically on older adults also reported significant reductions in insomnia severity with magnesium supplementation [11]. Therefore, while individual components such as vitamin B6 were less clearly validated in isolation, the available evidence suggests that supplements containing magnesium and melatonin, along with vitamin B6, can play a beneficial role in managing insomnia symptoms.

Based on user reviews, many individuals have reported significant improvements in their insomnia symptoms after incorporating this supplement into their nightly routine. One review highlights a positive transformation, noting that a user’s husband experienced stronger and deeper sleep after taking three capsules at night (Read Review). Another user shared that their insomnia, particularly following exercise, was effectively resolved by the supplement, describing it as very beneficial (Read Review).

In addition, several users pointed out the perceived advantages of non-drug approaches for managing sleep issues. One user remarked on the product's ability to reduce muscle tension and improve mood, providing a natural alternative to traditional sleeping pills (Read Review). After about a month of use, one reviewer noted enhanced daytime energy and improved overall sleep quality, suggesting the supplement can support those with varying degrees of insomnia (Read Review). While results can differ based on individual circumstances, these experiences illustrate a promising trend among users.

Based on user reviews, many individuals have explored combining this supplement with other nutrients to enhance their management of insomnia. One user specifically highlighted the efficacy of zinc and magnesium aspartate, noting that taking it a couple of hours before bedtime significantly aided their sleep quality, particularly for athletes (Read Review). Others reported that the supplement's ingredients, particularly magnesium, played a crucial role in reducing insomnia, which suggests that users perceive synergistic effects when combining this supplement with essential minerals (Read Review).

Furthermore, a user shared their positive experience of taking the supplement alongside a non-drug approach to insomnia management, emphasizing its effectiveness in treating stress-induced sleep issues without the side effects associated with conventional sleeping pills (Read Review). The overall sentiment from reviews suggests that users are finding beneficial outcomes not only from this supplement alone but also when combined with other supportive nutrients, creating a holistic approach to combating insomnia.

Based on user reviews, there seems to be a consensus on the effectiveness of Zinc Magnesium Aspartate for treating insomnia when taken in appropriate doses. One reviewer noted that their husband takes three capsules at night, which led to stronger and deeper sleep ((Read Review)). Another user recommended taking it two hours before bed to significantly aid sleep, especially for athletes ((Read Review)). This timing appears to be a common theme, with some users also suggesting an evening regimen to optimize benefits for sleep quality.

Additionally, a review highlighted personal improvements in sleep quality after a month of consistent use, affirming that the supplement notably assists those struggling with insomnia ((Read Review)). Overall, while individual experiences may vary, users report positive outcomes with specific dosing strategies, particularly emphasizing evening intake to enhance sleep effectiveness.

8.8
Worry-free sleep
I've been taking it for two weeks. Initially, I felt no change, but now I feel good. I sleep later now, around midnight, without fretting about insomnia, which had previously caused irritability.
8.8
Boosts energy levels
Personally, after using it for a month, I noticed an improvement in my daytime energy and my sleep quality. I previously suffered from muscle tremors, but that’s lessened. The best time to take it is before bed and it greatly benefits those with insomnia.
9.5
Stronger sleep
This helps my husband with his insomnia. He takes three capsules at night, and his sleep has become stronger and deeper. We are delighted!
9.5
Effective sleep solution
I experience insomnia and have difficulty sleeping after exercising, but this resolved my issue. It’s very beneficial.
9
Natural insomnia remedy
Compared to sleeping pills, nutrient supplements are less likely to lead to addiction. For insomnia stemming from stress and fatigue, they improve muscle tension naturally. This drug-free therapy is suitable for those sensitive to sleeping pills, like pregnant women, offering a non-drug approach to managing insomnia by providing stabilising nutrients for mood and relaxation.
9.5
Ideal for insomnia
Zinc and magnesium aspartate are excellent for those with insomnia. Taking this two hours before bed significantly aids sleep and is ideal for athletes.
9.5
Greatly reduces insomnia
It is regarded as a beneficial vitamin. I feel that the best outcome has been improved sleep, thanks to the magnesium, which has significantly reduced my insomnia.
We explored the potential benefits of a supplement containing magnesium, melatonin, and vitamin B complex in treating insomnia. The study involved 60 patients diagnosed with insomnia, who were divided into a study group and a control group. Over three months, the study group received a daily dose of the supplement, while the control group did not receive it.

At the start, both groups had similar levels of insomnia, indicated by their scores on the Athens insomnia scale. However, after three months of supplementation, the study group showed a significant improvement, with their insomnia scores decreasing, indicating mild insomnia. In contrast, the control group’s scores remained stable, suggesting they continued to experience moderate insomnia.

Although magnesium was part of the supplement, the study design makes it challenging to isolate its specific effects on insomnia. Nevertheless, we observed that combining magnesium with melatonin and vitamin B complex potentially enhances sleep quality for those struggling with insomnia.
We examined the potential benefits of magnesium supplements for improving sleep quality through a detailed analysis of existing clinical studies. Our systematic review focused specifically on trials investigating how magnesium affects insomnia, which have gained popularity among people seeking natural remedies for sleep problems.

A total of 15 relevant studies were reviewed. Among these, eight studies looked specifically at sleep-related outcomes, often employing the Pittsburgh Sleep Quality Index (PSQI) to measure improvements. The results were promising—five out of the eight studies indicated that magnesium supplementation led to better sleep quality.

However, it's important to note that not all studies observed benefits; two showed no significant improvements, and one provided mixed results. Many of these studies varied in the dosage, type of magnesium used, and overall participant numbers, which made it challenging to draw firm conclusions. Still, the general trend suggests that magnesium could indeed be helpful, especially for those who start with low magnesium levels.

Ultimately, while the findings lean towards positive, further large-scale, randomized trials are necessary to confirm the effectiveness of specific magnesium formulations and dosages in treating insomnia. We take these outcomes seriously, considering them a first step towards understanding how this mineral can help those struggling with sleep issues.
9
Magnesium improves elderly insomnia
We conducted a double-blind, placebo-controlled clinical trial to investigate the effects of magnesium supplementation on insomnia in elderly individuals. Our study involved 46 participants who were assigned either to receive 500 mg of magnesium daily or a placebo for a duration of 8 weeks.

Throughout the study, we employed various questionnaires, including the Insomnia Severity Index (ISI), to evaluate the participants' sleep quality both before and after the treatment period. We also monitored the intake of other nutrients and performed blood tests to assess hormone levels related to sleep.

The results showed that magnesium supplementation led to significant improvements in areas such as sleep efficiency, sleep onset timing, and overall insomnia severity. We observed increases in serum levels of melatonin and changes in cortisol and renin levels, indicating a physiological response that could enhance sleep quality.

Overall, it seems that supplementing with magnesium has the potential to improve sleep for older adults struggling with insomnia. This finding could pave the way for new, accessible treatment options for those affected by sleep disorders.

References

  1. Djokic G, Vojvodić P, Korcok D, Agic A, Rankovic A, et al. The Effects of Magnesium - Melatonin - Vit B Complex Supplementation in Treatment of Insomnia. Open Access Maced J Med Sci. 2019;7:3101. doi:10.3889/oamjms.2019.771
  2. Lemoine P, Bablon JC, Da Silva C. A combination of melatonin, vitamin B6 and medicinal plants in the treatment of mild-to-moderate insomnia: A prospective pilot study. Complement Ther Med. 2019;45:104. doi:10.1016/j.ctim.2019.05.024
  3. Mydlík M, Derzsiová K. Kidney damage in acute intermittent porphyria. Przegl Lek. 2011;68:610.
  4. Khalid S, Bashir S, Mehboob R, Anwar T, Ali M, et al. Effects of magnesium and potassium supplementation on insomnia and sleep hormones in patients with diabetes mellitus. Front Endocrinol (Lausanne). 2024;15:1370733. doi:10.3389/fendo.2024.1370733
  5. Fathy W, Hussein M, Elanwar R, Elmoutaz H, Abdelsadek DA, et al. Effect of intra-operative Magnesium sulphate on the occurrence of post-operative delirium and insomnia in patients undergoing lumbar fixation: a randomized controlled trial. BMC Anesthesiol. 2024;24:289. doi:10.1186/s12871-024-02579-6
  6. Rawji A, Peltier MR, Mourtzanakis K, Awan S, Rana J, et al. Examining the Effects of Supplemental Magnesium on Self-Reported Anxiety and Sleep Quality: A Systematic Review. Cureus. 2024;16:e59317. doi:10.7759/cureus.59317
  7. Mah J, Pitre T. Oral magnesium supplementation for insomnia in older adults: a Systematic Review & Meta-Analysis. BMC Complement Med Ther. 2021;21:125. doi:10.1186/s12906-021-03297-z
  8. Djokic G, Vojvodić P, Korcok D, Agic A, Rankovic A, et al. The Effects of Magnesium - Melatonin - Vit B Complex Supplementation in Treatment of Insomnia. Open Access Maced J Med Sci. 2019;7:3101. doi:10.3889/oamjms.2019.771
  9. Cao Y, Zhen S, Taylor AW, Appleton S, Atlantis E, et al. Magnesium Intake and Sleep Disorder Symptoms: Findings from the Jiangsu Nutrition Study of Chinese Adults at Five-Year Follow-Up. Nutrients. 2018;10. doi:10.3390/nu10101354
  10. Scholey A, Benson S, Gibbs A, Perry N, Sarris J, et al. Exploring the Effect of Lactium™ and Zizyphus Complex on Sleep Quality: A Double-Blind, Randomized Placebo-Controlled Trial. Nutrients. 2017;9. doi:10.3390/nu9020154
  11. Abbasi B, Kimiagar M, Sadeghniiat K, Shirazi MM, Hedayati M, et al. The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial. J Res Med Sci. 2012;17:1161.
  12. Rondanelli M, Opizzi A, Monteferrario F, Antoniello N, Manni R, et al. The effect of melatonin, magnesium, and zinc on primary insomnia in long-term care facility residents in Italy: a double-blind, placebo-controlled clinical trial. J Am Geriatr Soc. 2011;59:82. doi:10.1111/j.1532-5415.2010.03232.x
  13. Mucci M, Carraro C, Mancino P, Monti M, Papadia LS, et al. Soy isoflavones, lactobacilli, Magnolia bark extract, vitamin D3 and calcium. Controlled clinical study in menopause. Minerva Ginecol. 2006;58:323.
  14. Hornyak M, Haas P, Veit J, Gann H, Riemann D. Magnesium treatment of primary alcohol-dependent patients during subacute withdrawal: an open pilot study with polysomnography. Alcohol Clin Exp Res. 2004;28:1702.
  15. Hornyak M, Voderholzer U, Hohagen F, Berger M, Riemann D. Magnesium therapy for periodic leg movements-related insomnia and restless legs syndrome: an open pilot study. Sleep. 1998;21:501.
  16. Cappelli V, Morgante G, Di Sabatino A, Massaro MG, De Leo V. [Evaluation of the efficacy of a new nutraceutical product in the treatment of postmenopausal symptoms]. Minerva Ginecol. 2015;67:515.
  17. Cherasse Y, Saito H, Nagata N, Aritake K, Lazarus M, et al. Zinc-containing yeast extract promotes nonrapid eye movement sleep in mice. Mol Nutr Food Res. 2015;59:2087. doi:10.1002/mnfr.201500082
  18. Rondanelli M, Opizzi A, Monteferrario F, Antoniello N, Manni R, et al. The effect of melatonin, magnesium, and zinc on primary insomnia in long-term care facility residents in Italy: a double-blind, placebo-controlled clinical trial. J Am Geriatr Soc. 2011;59:82. doi:10.1111/j.1532-5415.2010.03232.x
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