Magnesium in the morning or evening? Forms, sleep and tiredness explained

Magnesium in the morning or evening: what's the short answer?

You can take magnesium in the morning, at midday or in the evening. No generally best time of day has been proven.

Be guided by three practical questions:

1. When do you tolerate the product well? If you have a sensitive stomach, taking it with a meal can be more comfortable.
2. When do you reliably remember it? Regularity is usually more important than the time of day.
3. What does the whole formula contain? For many people, a product with B vitamins fits better into their daytime routine. But that doesn't make magnesium itself stimulating or "better for energy".

If a larger daily portion can be split into several units, taking it in divided doses may be easier to tolerate. The directions for use on the specific product always remain decisive.

What do magnesium carbonate, citrate and bisglycinate mean?

In food supplements, magnesium doesn't occur as a free metal but as a compound, for example as carbonate, citrate or bisglycinate. The label should also state how much elemental magnesium the recommended daily portion provides. It's exactly this number of milligrams that is suitable for comparing products – not the total weight of the compound.

Magnesium carbonate

Magnesium carbonate is a permitted source of magnesium for food supplements in the EU. As a dry raw material, it is less water-soluble than citrate, for example. However, that doesn't automatically make a finished product "poorly utilised".

With an effervescent tablet, the entire effervescent system, the acid it contains, the amount of water and complete dissolution all play a part. That's why the quality of a finished effervescent solution should not be judged from the word "carbonate" alone. Conversely, the form is not proof of superior absorption either.

Important at SteloSupps: According to their lists of ingredients, both the EVÄM Magnesium + B-Complex effervescent tablets and the EVÄM Magnesium 375 mg effervescent tablets contain magnesium carbonate.

Magnesium citrate

Magnesium citrate usually dissolves well in liquid. Studies on various magnesium compounds suggest that readily soluble forms are often absorbed better than poorly soluble forms such as magnesium oxide. But it doesn't follow that citrate is automatically the best choice for every person or every purpose.

Depending on the dose and individual sensitivity, citrate can also loosen the stool. What matters is the amount of magnesium actually contained, the daily portion and personal tolerance.

Magnesium bisglycinate

In magnesium bisglycinate, magnesium is bound to the amino acid glycine. The form is often marketed as particularly gentle on the stomach or as "evening magnesium". Such sweeping statements go beyond what has been proven for all products and people.

Bisglycinate can be an option if you tolerate it well. But there is no robust evidence that it is generally the best form of magnesium for falling asleep. For bisglycinate too, the amount of elemental magnesium and the overall formula are more important than a single buzzword on the front.

Magnesium oxide and other forms

Magnesium oxide contains a high proportion of elemental magnesium but is comparatively poorly soluble. Malate, taurate and L-threonate are also on offer and are often associated with special uses. The comparative evidence is not sufficient for a sweeping ranking of the "best form for energy, nerves or sleep".

Magnesium and tiredness: what can really be said?

In the EU, the following claims, among others, are authorised for magnesium, provided the specific food meets the conditions for a source of magnesium:

Magnesium contributes to a reduction of tiredness and fatigue.

Magnesium contributes to normal energy-yielding metabolism.

Magnesium contributes to normal functioning of the nervous system.

This doesn't mean that magnesium wakes you up instantly like caffeine. The claims describe normal body functions. Tiredness can also have many causes – such as too little sleep, stress, an unbalanced diet, iron deficiency, thyroid disorders, infections or medication. If tiredness is persistent, severe or new, the cause should be checked by a doctor.

Why does Magnesium + B-Complex fit better into a daytime routine?

The EVÄM Magnesium + B-Complex effervescent tablet provides a combination of 300 mg magnesium and vitamins B1, B2, B6 and B12 per daily portion. Several of these nutrients contribute to normal energy-yielding metabolism; magnesium as well as B2, B6 and B12 contribute to the reduction of tiredness and fatigue.

That's why the combination can be positioned plausibly in a morning or lunchtime routine. It is nevertheless not a stimulant. If you tolerate it well in the evening, there's no need to move it to the morning just because of the magnesium carbonate. The daytime positioning results from the overall formula and the desired routine – not from "carbonate wakes you up".

How much magnesium makes sense?

Two numbers are often confused:

• For adults, the German Nutrition Society (DGE) gives estimated values for an adequate total intake of 350 mg per day for men and 300 mg per day for women. This includes magnesium from food and drinks.
• The EU nutrient reference value, used on labels as 100% NRV, is 375 mg. It is a labelling value and not a personal intake recommendation.

The German Federal Institute for Risk Assessment (BfR) recommends a maximum of 250 mg of additional magnesium per day for food supplements and advises splitting this amount into at least two doses. The main reason is possible laxative effects. This risk assessment must be distinguished from the EU nutrient reference value: it refers to additional magnesium from food supplements and fortified foods, not to magnesium from normal foods.

Products may state other daily portions. So check the specific directions for use and add up several supplements. More is not automatically better.

How to compare magnesium products in 30 seconds

1. Check the daily portion: How many tablets, capsules or scoops are intended?
2. Compare elemental magnesium: How many milligrams does exactly this daily portion provide?
3. Read the compound: Carbonate, citrate, bisglycinate or another form?
4. Look at the overall formula: Does it contain B vitamins, calcium, sweeteners or other substances?
5. Consider tolerance: How does your digestion react to the form and dose?
6. Plan intake realistically: Does an effervescent tablet, capsule or powder fit better into your everyday life?

You'll find more on this in our guides Per capsule or per daily dose? and Reading labels.

Frequently asked questions about magnesium