Can you take magnesium glycinate every day?

Yes, you can take magnesium glycinate every day. For most healthy adults, a daily dose of 400 mg of magnesium or less from supplements is unlikely to cause harm. Kidney disease and some medications change that answer, so check with your clinician if either applies to you.

That is the short version. The longer one lives on our bathroom shelf, next to the toothpaste we never quite finish.

Can you take magnesium glycinate every day?

Most people can. The NHS says having 400 mg or less a day of magnesium from supplements is unlikely to cause any harm. That is a ceiling, not a target. Food counts too, and adults need about 300 mg a day for men and 270 mg for women. A varied diet usually covers that, so a supplement is a top-up, not a replacement.

How much magnesium glycinate per day?

Stick to 400 mg or less of elemental magnesium from supplements unless your clinician says otherwise. If your kidneys are struggling, the maths changes. Magnesium is cleared mainly by the kidneys, and an NHS guide advises that doses should normally be halved when eGFR is below 30, because the mineral can build up. We keep that rule next to the one about the kettle: if the light is red, walk away.

Is magnesium glycinate safe long term?

Long-term data on high doses is thin. NHS guidance says there is not enough evidence to say what the effects might be of taking high doses of magnesium for a long time. So daily use at a moderate amount is the quiet lane. We like the quiet lane; it has better parking.

What does magnesium do in the body?

Magnesium helps turn the food we eat into energy and keeps the parathyroid glands working normally. It is also needed for nerve impulses and muscle contractions, and many enzymes rely on it to do their jobs. Low levels can bring numbness and cramps in the hands and feet, irregular heartbeats and fatigue, which is a good reason to keep an eye on your intake.

What foods are high in magnesium?

Food first, capsule second. Rich sources include spinach, nuts, wholemeal bread, wholegrain cereals, brown rice and broccoli. Fish, meat and dairy add smaller amounts. Adults need roughly 300 mg a day for men and 270 mg for women, and it helps turn food into energy and keeps nerves and muscles working. Here is the short version for your fridge door.

Nutrient	Typical daily amount	Why it matters	What to eat for it
Magnesium	300 mg for men, 270 mg for women	Helps turn food into energy and supports normal nerve and muscle function	Spinach, nuts, wholemeal bread, brown rice

Does magnesium glycinate cause diarrhoea?

It can, especially if you overdo it. Taking more than 400 mg for a short time can cause diarrhoea, and stomach irritation is a known side effect of oral magnesium. The fix is usually simple: take it with a meal. An NHS guide advises taking magnesium supplements with a meal to reduce stomach upset and diarrhoea unless your product says otherwise.

Can you take magnesium glycinate with medications?

Sometimes, but not at the same time. Magnesium can reduce the absorption of several drugs. An NHS guide lists tetracyclines, bisphosphonates, ACE inhibitors, quinolone antibiotics, levothyroxine and others, and advises separating doses by as long as possible. If you take a daily medication, ask your pharmacist to help you build a schedule that works. We use a whiteboard; it is mostly coffee stains.

What are the signs of too much magnesium?

Too much magnesium can cause nausea, vomiting, flushing, thirst, drowsiness, slurred speech, muscle weakness, a slow heart rate and confusion. Severe cases can lead to loss of deep tendon reflexes, breathing problems or coma. If you feel unwell after a dose, stop and call your clinician.

When should you not take magnesium glycinate?

If you have severe kidney disease, be careful. Magnesium is excreted mainly by the kidneys and is retained in renal failure, so adverse effects may be greater when eGFR is below 30. Doses are normally halved in that situation, and some people need to avoid supplements altogether. Your clinician should make that call, not us and not the internet.

What is the best time to take magnesium glycinate?

There is no single right hour, though many people take it in the evening. If you want the details, we wrote a whole post on how much magnesium glycinate before bed, and another on the sleep evidence. The only firm rule from the clinical side is to take it with a meal to reduce stomach upset if your stomach is sensitive.

Should you take magnesium glycinate every day?

If your clinician is on board and your dose stays sensible, yes. We make Haven with 275 mg of magnesium, which is 65% of the Daily Value, from 2,500 mg of magnesium glycinate in three vegan capsules, because that is the amount we wanted on our own bathroom shelf. It is a small daily habit, and we are fond of it.

FAQ

Can you take magnesium glycinate every day? Yes, for most adults a daily amount of 400 mg or less from supplements is unlikely to cause harm, though kidney disease and some medications change that.

How much magnesium glycinate is too much? Above 400 mg a day from supplements, the risk of diarrhoea and stomach upset rises, and long-term high-dose effects are not well studied.

Can I take magnesium with my thyroid medication? Magnesium may reduce levothyroxine absorption, so separate the doses by as long as possible.

Does magnesium glycinate help sleep? The evidence is still being sorted out, and we keep a running summary on our sleep evidence page.

What happens if you take magnesium every day for a long time? There is not enough evidence to say what high doses do over a long time, so moderate daily amounts are the safer choice.

Sources

• Oral Magnesium Supplementation Guide (Adults) 2023 remedy.bnssg.icb.nhs.uk
• Oral magnesium supplementation www.stmarkshospital.nhs.uk
• Magnesium – General Information www.lnds.nhs.uk
• Vitamins and minerals - Others www.nhs.uk

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.