Magnesium is one of the most frequently bought food supplements – and one of the most frequently bought incorrectly. The reason: it is not the milligram figure on the can that decides, but which form of magnesium it contains and how well the body absorbs it. This guide shows you in five minutes what really matters.
Why the form of magnesium matters more than the dose
Magnesium contributes to normal muscle function, to the reduction of tiredness and fatigue, to normal energy-yielding metabolism and to the normal function of the nervous system. For that to work, however, the body also has to be able to absorb the magnesium. This is exactly where good preparations differ from poor ones.
The key word is bioavailability – the proportion that actually reaches the body. A cheap form in a high dose that is barely absorbed delivers less than a smaller dose in a readily available form.
The three most important forms of magnesium compared
1. Magnesium citrate – the readily available all-rounder
Magnesium citrate is an organic compound of magnesium and citric acid. It is considered very bioavailable and is the solid standard choice for most people. In higher amounts it has a mildly digestive effect.
2. Magnesium bisglycinate – the stomach-friendly one
In bisglycinate, magnesium is bound to the amino acid glycine. This form is particularly gentle on the stomach and easy to tolerate – ideal for sensitive people or for taking in the evening.
3. Magnesium oxide – cheap, but poorly available
Magnesium oxide is an inorganic compound. It does have a high magnesium content per gram, but it is absorbed only to a very small extent. It is the most common form in low-cost preparations – and the main reason why many people are not satisfied with their magnesium.
Overview: which form for whom?
| Form | Bioavailability | Particularly suitable for |
|---|---|---|
| Magnesium citrate | High | Everyday use, sport, standard choice |
| Magnesium bisglycinate | High | Sensitive stomach, evening intake |
| Magnesium oxide | Low | Hardly recommended as a main source |
Why a combination of several forms makes sense
Instead of committing to a single form, high-quality preparations rely on a combination of several readily available magnesium sources. This uses different absorption pathways in the body and improves tolerability. Complementary substances such as vitamin B6 and potassium round off the formula sensibly.
The MINTU Premium Fitness Magnesium is built exactly on this principle: three high-quality magnesium sources, combined with vitamin B6 (contributes to normal energy-yielding metabolism) and potassium. Sugar-free, lab-tested and developed in Austria – with a fruity lemon-pineapple taste.
What to look for when buying
- Organic forms (citrate, bisglycinate) rather than predominantly magnesium oxide.
- Clearly declared magnesium forms in the ingredient list – no collective terms.
- Ideally without artificial sweeteners, colors and preservatives.
- Lab-tested quality and traceable origin.
Frequently asked questions
Which magnesium is best?
Organic magnesium compounds such as magnesium citrate and magnesium bisglycinate are more bioavailable and gentler on the stomach than magnesium oxide. A combination of several readily available forms makes the most sense.
When should you take magnesium?
Magnesium can be taken at any time of day. Many people prefer the evening, as magnesium contributes to normal muscle function and is easy to tolerate.
Is sugar-free magnesium better?
Sugar-free variants deliver the same amount of magnesium without unnecessary calories and are therefore more practical for everyday use – provided that high-quality sweetening alternatives such as steviol glycosides are used instead of sugar.
Can I take magnesium on a long-term basis?
Magnesium is suitable for regular intake within the recommended consumption amount. Do not exceed the daily amount stated on the pack and avoid taking other magnesium-containing preparations at the same time.
Note: food supplements are not a substitute for a balanced diet and a healthy lifestyle.
