Magnesium Glycinate vs Citrate UK: Which Form Should You Take?

The form of magnesium you take determines how much your body actually absorbs and what it's best suited for. This isn't a minor detail. The difference between glycinate and oxide, for example, is basically the difference between something that works and something that mostly passes through you unused.

Does the Type of Magnesium Actually Matter?

Significantly. Magnesium oxide, cheapest and most common, has around 4% absorption. Glycinate and citrate are 40-60% absorbed. If you've tried magnesium before and noticed nothing, the form is almost certainly the explanation before concluding it doesn't work for you.

What Is Magnesium Glycinate Good For?

Sleep, anxiety, and sensitive stomachs. The glycine it's bound to has its own calming properties and supports GABA function. It's the gentlest form on digestion. Some magnesium forms cause loose stools at higher doses. Glycinate doesn't. If your main goals are better sleep and stress management, this is the form.

What Is Magnesium Citrate Good For?

Digestion, general supplementation, and people who want a mild laxative effect. Well absorbed, affordable, widely available. Less targeted for sleep than glycinate but a solid all-rounder. Good for correcting general deficiency and supporting digestive regularity.

Is Magnesium Oxide Worth Taking?

For daily supplementation, no. The absorption rate is too low to make it worthwhile. It's cheap to produce which is why it appears everywhere, but you'd need enormous doses to get meaningful benefit. Avoid it for sleep, stress, or energy purposes.

Why Most Magnesium Supplements Are Quietly Underdelivering

If your multivitamin or sleep supplement lists "magnesium" without a form, it's almost certainly oxide. 4% absorbed. Brands include it because it allows them to tick a box on the label, not because it's going to do anything meaningful in your body. This is one of the most common quiet failures in the supplement industry and almost nobody talks about it.

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Our DailyGreens takes a different approach. Rather than compete in the magnesium dose game, we include B6 at 200% NRV the co-factor required for magnesium to actually reach your cells. It's one of six gummies in the Guudies routine. Try Guudies today.