Why You Should Use Magnesium Supplements to Boost Your Sleep Quality (2025)

4 min read

Melatonin is the most popular and well-known sleep supplement on the market. It's a go-to for many people, however, melatonin doesn't work for everyone. From bizarre dreams to feeling groggy the next day, there are several reasons that some people don't use melatonin supplements for better sleep.

Thankfully, that's not your only option. Another sleep aid that's gained recent popularity is magnesium, which is said to calm your nervous system and help you get quality sleep. Read on to learn about magnesium's benefits, types and dosage suggestions so you can decide if it's worth trying for your sleep needs.

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What is magnesium?

Magnesium is an essential mineral in the body that plays a key role in regulating blood pressure, protein synthesis, muscle and nerve function and blood sugar. Magnesium also helps in bone development, energy production, improving sleep and maintaining a normal heart rhythm.

Magnesium is present in several foods, such as:

• Green leafy vegetables
• Nuts
• Legumes
• Seeds
• Whole grains
• Soy products

If your diet lacks such foods, you may require magnesium supplementation. Several magnesium supplements are available that provide various health benefits. You must talk with your doctor before taking magnesium supplements for your sleep.

Benefits of magnesium for sleep

Magnesium supplementation can help you get better and longer sleep, resulting in less tiredness during the day. Magnesium can also treat sleep disorders such as insomnia and restless leg syndrome, helping you fall asleep easily and improving your sleep quality.

Improves insomnia

Insomnia is a condition characterized by difficulty falling asleep, staying asleep or early waking. It affects about 10 to 48% of the global population, with the percentage being higher for the elderly. Magnesium plays a role in the production of melatonin, a hormone associated with the normal sleep-wake cycle of the body. Studies suggest that magnesium deficiency can decrease melatonin concentration, thereby interfering with sleep.

Magnesium can also be combined with other supplements, such as melatonin and vitamin B complex, to reduce insomnia symptoms and improve sleep quality.

Can treat restless leg syndrome

Restless leg syndrome is a neurological condition that causes uncomfortable sensations such as tingling, creeping or crawling in your legs and an irresistible urge to move them. RLS can disrupt your sleep, making it difficult to fall asleep since people are forced to move their legs to relieve the sensations. Research suggests magnesium supplementation can help relax your muscles, which can relieve your discomfort and make you fall asleep easily.

Calms the central nervous system

Magnesium can regulate sleep by activating gamma-aminobutyric acid, a chemical messenger that reduces the excitement or firing of neurotransmitters and calms the nervous system. Magnesium can also inhibit the N-methyl-d-aspartate receptor which promotes muscle relaxation. Studies have also suggested that magnesium supplementation can reduce the concentration of a stress hormone, serum cortisol, which further calms the nervous system and promotes better sleep.

May relieve anxiety and depression

Anxiety and depression can increase the risk of insomnia. Research suggests that magnesium may help anxiety and mild to moderate depression, which may also help to improve sleep quality. Speak with your doctor about any concerns you may have about your mental health.

What type of magnesium is best for sleep?

Several types of magnesium supplements are available, each having their own health benefits. The following are a few that can help you get a good night's sleep:

• Magnesium glycinate: This form of magnesium can be easily absorbed by your body, promoting relaxation and better sleep. Being easily absorbed also means it is unlikely to cause serious side effects. Magnesium glycinate can also treat depression, which may cause sleep problems.
• Magnesium L-threonate: Magnesium L-threonate is a safe and bioavailable form of magnesium that can help to improve sleep quality, mood fluctuations and daytime activities.
• Magnesium oxide: This form is less bioavailable than the other two. Research suggests that magnesium oxide can help to improve insomnia symptoms in older adults.

Magnesium dosage for sleep

The amount of magnesium a person can take daily depends on their age and any existing health conditions. The recommended daily intake ranges from 400-420 mg for adult men and 310-320 mg for adult women, per the Food and Nutrition Board at the Institute of Medicine of the National Academies.

This recommended amount is a general guideline for overall magnesium intake but not specifically for sleep. Talk to your doctor or a sleep expert before taking magnesium supplements for sleep. They can recommend the supplement most suitable for you since some forms of magnesium can interfere with certain prescription drugs.

Bottom line

Magnesium supplements have recently gained popularity as a sleep aid. They can help calm your nervous system, relax muscles, improve depression and anxiety symptoms and may even treat conditions such as restless leg syndrome and insomnia. Consult with your doctor before taking any magnesium supplements for sleep. Some vitamins and supplements may interfere with other medications and cause side effects such as abdominal cramps, diarrhea or nausea. Your doctor can recommend the type and dose of magnesium most suitable for you.