Magnesium Bisglycinate

Magnesium is an essential mineral involved in hundreds of reactions in the body. The claims authorised in Switzerland and the EU are specific: it contributes to the reduction of tiredness and fatigue, to normal energy-yielding metabolism, to the normal functioning of the nervous system and muscles, and to normal psychological function.

These are the only benefits that can be stated. MagCalm provides 330 mg of elemental magnesium per dose (88 % of the reference values), in three complementary forms.

Not all forms deliver magnesium the same way. A 2021 systematic review concludes that organic forms (bisglycinate, citrate, glycerophosphate) are better absorbed than inorganic ones (oxide), with absorption also depending on the dose.

Bisglycinate, in which magnesium is bound to an amino acid (glycine), is considered gentle on the stomach. MagCalm combines three organic forms to pair absorption with tolerability.

The recommended dose is 3 tablets a day, providing 330 mg of elemental magnesium (88 % of the reference values).

There is no need — and it is not advised — to exceed the dose: above around 350 mg of magnesium from supplements, the main effect is looser stools. Spreading intake across the day can improve digestive comfort.

There is no universal time: magnesium can be taken in the morning or the evening; what matters is consistency. Many take it in the evening with dinner, out of habit; others spread it out.

Taking it with a meal improves digestive tolerance. No study shows that a specific time changes its effectiveness — choose the moment you can keep to over time.

Magnesium contributes to normal psychological function (an authorised claim). Beyond that, the evidence for an effect on anxiety remains limited: reviews suggest a possible benefit for mild anxiety, especially when magnesium status is low to begin with, but the studies are small and inconsistent.

In other words: a useful baseline support if intake is lacking, not a treatment. For persistent anxiety, consult a healthcare professional.

Caution here too. A 2021 meta-analysis (3 trials, about 150 older adults) observed falling asleep roughly 17 minutes faster, but with no significant increase in total sleep time, and with low quality of evidence.

Magnesium supports the normal functioning of the nervous system, which may aid relaxation, but it is not a sleeping pill. An effect is more likely if your intake is insufficient to begin with.

This is the most stubborn misconception. A Cochrane review concludes that magnesium supplementation is unlikely to prevent muscle cramps in a clinically useful way in adults, particularly older adults; in pregnant women the data are contradictory.

Magnesium contributes to normal muscle function, but it is not a treatment for cramps. It remains worthwhile if your intake is lacking — not as a universal anti-cramp remedy.

From food, there is no risk of overdose in healthy people (the kidneys remove the excess). For supplements, the only common effect is digestive: looser stools when the dose is too high or the form poorly absorbed.

That is why the safety limit for supplemental magnesium is set at 350 mg per day. Well-absorbed organic forms, like those in MagCalm, are generally better tolerated.

There is no single timeframe — it depends mainly on your starting status. If intake is insufficient, regular daily use rebuilds reserves over a few weeks.

For fatigue or nervous tension, some feel better within one to two weeks, others later. Magnesium is a baseline support: consistency matters more than speed.

Magnesium needs rise during pregnancy, but self-medication is not recommended: supplements should be assessed case by case. On pregnancy cramps, the data are moreover contradictory.

If you are pregnant or breastfeeding, ask your doctor or midwife before taking MagCalm.

Sensitive stomach: organic forms (bisglycinate, glycerophosphate) are gentler than oxide; taking the tablets with a meal and spreading the dose helps further. Children: MagCalm is formulated for adults, not for children without medical advice.

Medication: magnesium can interact with certain medicines (for example some antibiotics, which should be spaced apart). If you are on treatment or have kidney disease, seek professional advice before use.

• Pardo MR, et al. Nutrition. 2021 — bioavailability of magnesium forms (organic > inorganic). DOI
• Mah J, Pitre T. BMC Complement Med Ther. 2021 — meta-analysis, sleep (modest effect, weak evidence). DOI
• Rawji A, et al. Cureus. 2024 — systematic review, mild anxiety and sleep. DOI
• Boyle NB, et al. Nutrients. 2017 — magnesium and anxiety (limited evidence). DOI
• Garrison SR, et al. Cochrane Database Syst Rev. 2020 — magnesium and muscle cramps (benefit unlikely). DOI
• Costello R, et al. Adv Nutr. 2023 — safety limit and digestive tolerability of magnesium. DOI