Which magnesium should you choose for an evening routine, and how much should you take? Nutritionist Rob Hobson looks at the evidence and explains the options.
🕒 6 min read
Magnesium glycinate is a practical option for an evening supplement routine, although research has not established one form as best for sleep. There is no agreed magnesium dose specifically for sleep. For Healthspan Magnesium Glycinate, the label recommends 2–3 tablets daily, providing 200–300mg of magnesium, one hour before bedtime. Follow the directions for your chosen product and check the amount of magnesium it provides, rather than the weight of the whole compound.
Sleep is one of the pillars of good health, yet many people struggle to achieve enough rest. Chronic sleep issues take a real toll on everyday wellbeing. Magnesium supplements have attracted significant attention, but the evidence about sleep is still developing. Here, registered nutritionist Rob Hobson looks at how magnesium works, which form is best for sleep and what the research actually says.
Does magnesium help you sleep?
Magnesium contributes to normal nervous system and psychological function. Researchers have also investigated its relationship with sleep, but the evidence is still limited.
A review led by researchers at UK universities, including UCL and Liverpool John Moores University, included a small magnesium study involving 46 older adults. The study itself took place overseas. Its findings do not establish which magnesium form or dose is best for sleep, or show that everyone taking a supplement will benefit.
Learn more about magnesium, including what it is and why it’s essential for our health.
Magnesium Glycinate
For your evening routine
- 2–3 tablets provide 200–300mg of magnesium
- Reduces tiredness & fatigue
- Maintains normal muscle & psychological function
- Gentle on your stomach
What does magnesium do in the body?
Magnesium has several established roles that help explain the interest in this mineral. It contributes to:
- Normal functioning of the nervous system.
- Normal psychological function.
- Normal muscle function.
- A reduction of tiredness and fatigue.
These nutritional benefits are different from a proven effect on sleep. Research into sleep and hormones does not mean a magnesium supplement will make you fall asleep or stay asleep.
Which magnesium is best for sleep?
Not all magnesium supplements are the same. They differ in the compound used, the amount of magnesium they provide and how well they suit your digestive system. Choose a form you can take comfortably and consistently; no form has been established as the best for sleep.
Magnesium supplements come in different forms. Check the amount of magnesium provided and the directions on the label.
| Magnesium form | What it is | Choosing a supplement |
|---|---|---|
| Glycinate (bisglycinate) | Magnesium bound to the amino acid glycine. | An option for regular use and an evening routine. Check the label: some products also contain magnesium oxide. |
| Citrate | Magnesium bound to citric acid. | A commonly used oral form. Consider your digestive tolerance, as magnesium supplements can cause loose stools. |
| Malate | Magnesium bound to malic acid. | Another option for daily magnesium intake. It has no established advantage for sleep or reason to be taken only in the daytime. |
Magnesium glycinate for sleep
Magnesium glycinate (also known as magnesium bisglycinate) is magnesium bound to glycine, an amino acid. It is a useful option to consider for regular supplementation, including as part of an evening routine.
Research on glycine alone should not be taken as proof that magnesium glycinate has the same effect on sleep. Look at the magnesium content, the product directions and how well you tolerate it.
Read more about magnesium glycinate’s benefits, uses and side effects.
Magnesium citrate for sleep
Magnesium citrate is one of the most commonly used forms of magnesium supplements. It is an option for daily magnesium intake, but evidence does not establish it as a treatment for insomnia or sleep disturbed by digestive problems.
Magnesium malate for sleep
Magnesium malate is magnesium bound to malic acid, a compound involved in energy production. Magnesium contributes to normal energy-yielding metabolism, but this does not mean malate acts as a stimulant or needs to be taken during the day. There is no established reason to choose it over other forms specifically for sleep.
When to take magnesium for sleep
If an evening dose fits your routine, take your supplement at a consistent time and follow its label. Healthspan Magnesium Glycinate is taken one hour before bedtime, according to its directions. This is a suggested routine, rather than a promise that it will make you sleepy within an hour.
For more information, read our full guide on how long magnesium takes to work.
Taking magnesium at night
An evening dose can be convenient if it helps you remember to take your supplement. Taking it with a light evening snack may help minimise mild digestive discomfort, if this fits the product directions.
Consistency matters more than finding a perfect time. Morning or evening use can fit a daily routine; follow the directions for your chosen product.
Magnesium dosage for sleep
There is no single universally agreed magnesium dosage for sleep, and the amount you need will depend on your age, dietary intake and the specific form you're taking.
The NHS advises that adults aged 19–64 need 300mg of magnesium a day for men and 270mg for women. These amounts refer to total intake, including food, rather than an extra supplement dose. Leafy green vegetables, nuts, seeds and wholegrains are good dietary sources.
Follow the dose on your supplement label rather than copying a research dose. Healthspan Magnesium Glycinate provides 100mg of magnesium per tablet: the recommended 2–3 tablets supply 200–300mg daily. Include any magnesium in other supplements when checking your intake. The NHS says 400mg or less a day from supplements is unlikely to cause harm, but this is not a recommended dose for sleep. Higher doses can cause diarrhoea. If you're unsure about the right dose for you, speak to your GP or pharmacist.
When looking for a magnesium supplement, it’s important to distinguish elemental magnesium from the total weight of the compound. For example, a supplement labelled 1,000mg magnesium glycinate does not contain 1,000mg of magnesium. Part of that weight comes from glycine, meaning the amount of actual magnesium is lower.
How to take magnesium for sleep
Taking magnesium with a small amount of food may reduce the chance of stomach discomfort. Follow the product directions. If you take prescribed medicines, ask your pharmacist about suitable timing, as some medicines need to be taken separately from magnesium.
Speak to a healthcare professional before taking a supplement if you are pregnant, breastfeeding or have a medical condition, particularly kidney problems. Do not exceed the recommended intake.
Healthspan magnesium glycinate
Healthspan Magnesium Glycinate contains a buffered preparation of magnesium bisglycinate and magnesium oxide. Each tablet provides 500mg of magnesium glycinate, supplying 100mg of magnesium. The recommended 2–3 tablets provide 200–300mg of magnesium daily.
Magnesium contributes to normal muscle and psychological function and a reduction of tiredness and fatigue. Follow the product directions and take it as part of a varied, balanced diet and healthy lifestyle.
While magnesium can be a helpful addition to your bedtime routine, it works best as part of a healthy sleep routine. No supplement can replace good sleep habits, such as keeping a regular schedule, limiting screens before bed, and creating a calm, dark sleeping environment.
Explore Healthspan’s sleep range for more options for your evening routine. If sleep problems persist or affect your daily life, speak to your GP.
