Walk into any supplement store and you'll find a dizzying array of magnesium products — magnesium oxide, citrate, malate, threonate, glycinate, and more. So what's the difference, and which one should you choose? Let's break it down.
Why the Form of Magnesium Matters
Magnesium must be bound to another compound to be stable in supplement form. The compound it's bound to affects how well your body absorbs it (bioavailability), how it's used in the body, and how well it's tolerated digestively.
Magnesium Oxide
Bioavailability: Low (~4%)
Magnesium oxide is the most common and cheapest form, but it's also the least absorbed. It's primarily used as a laxative or antacid. Not ideal for replenishing magnesium levels.
Magnesium Citrate
Bioavailability: Moderate (~16-30%)
Better absorbed than oxide, magnesium citrate is widely used and affordable. However, it has a strong laxative effect at higher doses, making it less suitable for daily supplementation for some people.
Magnesium Malate
Bioavailability: Good
Bound to malic acid, this form is often recommended for energy production and muscle pain. It's a solid choice for those dealing with fatigue or fibromyalgia.
Magnesium L-Threonate
Bioavailability: High (especially in the brain)
This newer form is specifically studied for cognitive benefits and brain health. It crosses the blood-brain barrier more effectively than other forms. It tends to be more expensive.
Magnesium Glycinate
Bioavailability: High (~80%+)
Magnesium glycinate is bound to glycine, a calming amino acid. This combination offers exceptional absorption, minimal digestive side effects, and dual benefits for both magnesium replenishment and nervous system support. It's widely considered the best all-around form for daily supplementation — especially for sleep, stress, and muscle recovery.
The Verdict
| Form | Bioavailability | Best For | Digestive Tolerance |
|---|---|---|---|
| Oxide | Low | Laxative use | Poor |
| Citrate | Moderate | General use | Moderate |
| Malate | Good | Energy, muscle pain | Good |
| L-Threonate | High (brain) | Cognitive health | Good |
| Glycinate | High | Sleep, stress, recovery | Excellent |
Why We Chose Magnesium Glycinate
At Pura Livn, we formulated our supplement with magnesium glycinate because we believe you deserve a product that actually works — one your body can absorb and use effectively, without the digestive discomfort of inferior forms.
Try our Magnesium Glycinate Capsules and feel the difference a premium form can make.