Magnesium Bisglycinate or Magnesium Citrate – Which Magnesium Is Better?

Magnesium bisglycinate or magnesium citrate – which is better? In short: bisglycinate is the especially stomach-friendly, gentle form (ideal for a sensitive stomach and for the evening), while citrate is highly bioavailable and, in higher doses, stimulates digestion. Both are organically bound and usually superior in absorption to the cheaper magnesium oxide – the “best” form depends on your goal.

Magnesium is involved in more than 300 metabolic processes – no wonder it ranks among the most popular dietary supplements of all. Yet a dozen forms line the shelves. Two keep turning up right at the top: bisglycinate and citrate. Instead of wading through marketing speak, here you get the honest head-to-head comparison – and by the end you’ll know which form fits your everyday life.

The most important points at a glance

• Magnesium bisglycinate is especially stomach-friendly and very well tolerated – great if you react sensitively or want to take it in the evening.
• Magnesium citrate is highly bioavailable and, in higher doses, mildly stimulates digestion – handy if that’s exactly what you’re looking for.
• Both are organically bound and usually superior in absorption to inorganic magnesium oxide.
• What matters is the elemental magnesium content per serving – not the weight of the compound.
• BfR guidance: no more than 250 mg per day via supplements, ideally split into portions.

Why the magnesium form matters at all

Magnesium contributes to normal energy-yielding metabolism, to normal muscle function and to the reduction of tiredness and fatigue – these are officially authorised claims in the EU. But for your body to use the magnesium, it first has to absorb it. And this is exactly where the chemical compound to which the magnesium is bound comes into play.

This bond influences two things: the bioavailability (how well the body absorbs it) and the tolerability. Rule of thumb: organically bound forms such as bisglycinate or citrate are usually absorbed better than inorganic ones such as magnesium oxide – even though oxide contains more “elemental” magnesium per milligram. More on this in Bioavailability simply explained.

Magnesium bisglycinate: the gentle, well-tolerated form

In bisglycinate, magnesium is bound to two molecules of the amino acid glycine – a so-called chelate. This stable bond makes the form especially stomach-friendly: it is usually very well tolerated even by sensitive people and – unlike some other forms – has barely any laxative effect. That is precisely why bisglycinate is the typical choice for the evening routine. Magnesium contributes to normal functioning of the nervous system and to normal psychological function – both likewise authorised EU claims. As an uncomplicated all-round form, it is excellently suited to daily intake.

Magnesium citrate: highly available and digestion-active

In citrate, magnesium is bound to citrate, the salt of citric acid. This form is also highly bioavailable. Its particular feature: in higher doses citrate acts osmotically and can stimulate digestion, i.e. have a mild laxative effect. For some this is an unwanted side effect – others use it quite deliberately for sluggish digestion. Citrate is therefore interesting if you’re looking for a highly available form and either accept the digestion-active effect or specifically want it.

Bisglycinate vs. citrate: the direct comparison

Which form suits which goal?

For muscles & sport

Magnesium contributes to normal muscle function, to electrolyte balance and to the reduction of tiredness and fatigue. Both forms are suitable. Those who sweat a lot may appreciate citrate; those who are sensitive reach for bisglycinate. Context on this in Sport, electrolytes, magnesium & potassium.

For the evening routine

Because bisglycinate is mild and contains glycine, it is the classic choice for the evening. Magnesium contributes to normal functioning of the nervous system. Whether morning or evening is explored in depth in Magnesium in the morning or evening.

For digestion

Here citrate plays to its strength: the mild laxative effect in higher doses can be used in a targeted way.

For a sensitive stomach

Bisglycinate is the gentlest of the common forms and usually the best choice when other supplements upset your stomach.

What research is investigating

The fact that organically bound compounds tend to be absorbed better than inorganic ones is well studied. Science continues to shed light on how large the differences between the individual organic forms actually are in everyday life, what role stomach tolerability plays for real absorption, and how the osmotic effect of citrate works out on an individual basis. For practice this means: both are solid forms; the fine selection depends on tolerability and goal, not on a single laboratory value.

And the other forms? Oxide, malate & complexes

Bisglycinate and citrate are the two classics, but they aren’t alone on the shelf. Magnesium oxide is the cheapest form with the highest elemental share per milligram – but noticeably harder to absorb and frequently laxative. Magnesium malate (bound to malic acid) is valued by some for daytime intake, because malate plays a role in energy metabolism. Alongside these there are trisglycinate, taurate and further special forms. For most people, however, bisglycinate and citrate are the pragmatic, well-documented choice. Anyone who wants to bundle the advantages of several compounds reaches for a magnesium complex made from several sources. A complete overview of the forms is given in Which magnesium is the best?.

Dosage & intake

As a reference value for an adequate total daily intake, the DGE cites around 300 mg (women) to 350 mg (men) – via diet and, where needed, supplemented. The BfR recommends taking no more than 250 mg per day via dietary supplements, ideally spread over several portions – this improves absorption and is easier on the stomach. What always matters is the elemental magnesium content, not the weight of the compound. A look at the nutrition information is worthwhile – how to read it correctly is shown in Reading the label correctly. How long it takes for the stores to fill up is put into perspective by How long until magnesium works?; how long you should supplement is clarified by How long to take magnesium?.

Combining magnesium sensibly

Whether bisglycinate or citrate – magnesium doesn’t work in isolation in the body. It is often combined with vitamin B6, which likewise contributes to a normal energy metabolism and to the functioning of the nervous system; whether that suits you is clarified in Can you take magnesium and vitamin B6 together?. Combining it with vitamin D is also common – see Magnesium and vitamin D together. Anyone using several supplements should take care not to take magnesium multiple times unintentionally; an overview is given by Combining supplements correctly.

How to make your decision in 3 steps

1. Check tolerability: Do you have a sensitive stomach or want to take it in the evening? → Bisglycinate.
2. Weigh the added benefit: Do you want a digestion-stimulating effect or a very well available form for the day? → Citrate.
3. Check the label: Compare the elemental magnesium content per daily serving and the purity of the formula, not the weight of the compound.

What to look for in terms of quality

Whichever form you choose – the quality of the formula makes a difference. Pay attention to:

• Elemental content: How much pure magnesium is in each daily dose? Only this figure is comparable.
• Clean formula: ideally without unnecessary additives, colourings and fillers – see Recognising additives & fillers.
• Lab-tested & transparent: traceable origin and independent testing – see Lab-tested: what does that mean?.
• Made in Germany: short distances and clear standards.

Honestly assessed: what is established and what is not

What is established is that both forms are highly bioavailable and that bisglycinate is considered especially gentle on the stomach, while citrate can be digestion-active. It would not be serious to claim that one form is categorically “superior” to the other – that simply depends on your goal and your tolerability. If you take medication, are pregnant or have impaired kidney function, discuss the intake with a doctor beforehand.

Suitable products from Scheunengut

You’ll find both popular forms and practical combinations in the Magnesium category – as capsules and powder with a clearly declared elemental content. For active people, Sport & Fitness is worthwhile, and for an overview, Minerals. Read on: Which magnesium is the best?, Recognising good magnesium and How long until magnesium works?. All products are lab-tested and made in Germany.

Frequently asked questions (FAQ)

Is magnesium bisglycinate or citrate better?

That depends on the goal. Bisglycinate is especially stomach-friendly and ideal for sensitive stomachs and the evening routine. Citrate is highly bioavailable and, in higher doses, stimulates digestion. Both are organically bound and usually better absorbed than magnesium oxide – there is no categorically “better” form.

Which magnesium is the most stomach-friendly?

Magnesium bisglycinate is considered the gentlest of the common forms. Thanks to the bond to the amino acid glycine (a chelate) it is very well tolerated and has barely any laxative effect – the typical choice when other supplements upset your stomach.

Which magnesium is suitable for the evening?

Bisglycinate is the classic choice for the evening routine because it is mild, contains glycine and is well tolerated. Magnesium contributes to normal functioning of the nervous system. What matters for the supply, however, is regularity, not the exact time of day.

Can you combine bisglycinate and citrate?

Yes, many combination products deliberately bundle several magnesium sources to combine tolerability and availability. The important thing is that the total daily amount of elemental magnesium stays within a sensible range (BfR: max. 250 mg via supplements).