Your performance is only as strong as the foundation behind it. MAGNESIUM GLYCINATE provides 240 mg of elemental magnesium from 1333.3 mg of magnesium glycinate, supplying 57% of the NRV to support normal energy metabolism, muscle function and nervous-system function. Whether your days are filled with hard training, long hours or constant mental demands, this high-strength magnesium formula is designed to support the essential processes that help keep your body performing at its best.

Magnesium is an essential dietary mineral. The body cannot make it, so it has to come from food or supplements. It acts as a cofactor in hundreds of enzyme reactions, including those involved in energy (ATP) production, protein synthesis and nerve signalling, and it contributes to normal muscle function and normal functioning of the nervous system. In magnesium glycinate, the mineral is bound to the amino acid glycine.

The figure that matters on a magnesium label is the elemental amount: the weight of the mineral itself, not the weight of the whole compound. This label states the elemental magnesium delivered and the concentration of the raw material as two separate figures, so the dose can be read directly rather than worked out.

Magnesium Glycinate is intended for healthy adults aged 18 and over. It suits people who prefer to take their supplements as part of an evening routine, and people who train regularly and want a clearly declared magnesium amount they can count within their total daily intake. It contains a single active ingredient and no proprietary blend, and it is designed to complement a varied diet that includes magnesium-rich foods.

The following describes published research on the ingredient. It is not a claim about this specific product.

Studies suggest the bisglycinate form is well tolerated at a dose close to this product's serving. In a four-week, double-blind, placebo-controlled trial, Schuster and colleagues (2025) gave 155 adults aged 18–65 either 250 mg of elemental magnesium a day as magnesium bisglycinate, taken as two capsules 30–60 minutes before bed, or a placebo; this product provides 240 mg per serving. The magnesium group improved more than the placebo group on the trial's primary self-reported outcome, but the effect size was small (d = 0.2) and the authors described it as modest. Exploratory analyses pointed to larger changes among participants reporting lower dietary magnesium intake, and the authors note that direct comparisons of absorption between magnesium forms remain limited.

Research indicates mixed results in active adults. Reno and colleagues (2022) gave 22 college-aged men and women 350 mg of magnesium a day for 10 days, which is more than this product's 240 mg serving, and reported lower ratings of muscle soreness and perceived exertion after a resistance-exercise session than with placebo, while changes in repetitions to failure did not reach statistical significance. By contrast, Bomar and colleagues (2025) gave 15 regular exercisers magnesium chloride, reported as 300 mg twice a day, for nine days in a crossover trial, and measured lower maximal oxygen uptake and lower 30-second sprint power than with placebo, with no change in a 10 km time trial. The doses, forms and durations in these studies differ from this product, and their findings do not transfer directly to it.

Magnesium glycinate compared with magnesium citrate. Both are organic magnesium salts: glycinate binds magnesium to the amino acid glycine, while citrate binds it to citric acid. Each compound carries a different share of elemental magnesium by weight, which changes how much powder, and how many capsules, a given dose needs. When comparing products, compare the elemental magnesium per serving rather than the compound weight.

Magnesium glycinate compared with magnesium L-threonate. Magnesium L-threonate has been investigated mainly for its effect on magnesium levels in the brain, largely in animal research, and human trials are few. It also supplies less elemental magnesium per dose than most other forms. Magnesium glycinate suits a straightforward daily magnesium amount at a clearly declared dose.

Key Benefits

• Declared Elemental Dose: 120 mg of elemental magnesium per capsule and 240 mg per two-capsule serving (57% NRV), stated as the mineral itself rather than the compound weight.
• Concentration on the Label: The raw material is declared at 18% elemental magnesium, alongside the amount delivered, so both figures can be checked against the label.
• Single Active Ingredient: Magnesium glycinate is the only active in the capsule, with no proprietary blend.
• Essential Mineral Support: Magnesium contributes to normal muscle function and normal functioning of the nervous system as part of a varied diet.
• Glycinate Form: The magnesium is bound to the amino acid glycine and declared by name on the label.

Common Questions

What is magnesium glycinate?
Magnesium glycinate is magnesium bound to the amino acid glycine. It is also sold as magnesium bisglycinate or magnesium diglycinate. MitoGenix Magnesium Glycinate provides 120 mg of elemental magnesium per capsule, or 240 mg per two-capsule serving.

How much elemental magnesium is in each serving?
Each capsule provides 120 mg of elemental magnesium (29% NRV), and the two-capsule serving provides 240 mg (57% NRV). Elemental magnesium is the weight of the mineral itself, which is the figure to compare between products, not the weight of the whole compound.

What does 18% elemental magnesium mean on the label?
It is the concentration of the raw material: 18% of the magnesium glycinate's weight is elemental magnesium. The label declares that concentration and the amount delivered, 120 mg per capsule, as two separate figures, so the dose can be read without converting compound weights.

When is the best time to take magnesium glycinate?
The directions are two capsules daily, and the label suggests taking them 30–60 minutes before bed. Taking them at a consistent time each day is more practical than aiming for any particular hour. Do not exceed the recommended dose.

Can I take magnesium glycinate every day?
Yes, the directions are for daily use at two capsules a day. Do not exceed the recommended dose. It is not intended for anyone under 18 or for pregnant or breastfeeding mothers, and anyone with a known medical condition should consult a healthcare professional first.

How much magnesium from supplements is too much?
In the United States, the tolerable upper intake level for magnesium from supplements is 350 mg a day for adults. One 240 mg serving sits below that figure, but magnesium from any other supplement you take counts towards the same daily total.

What side effects can magnesium supplements cause?
Magnesium supplements can cause loose stools, nausea or stomach discomfort, most often at high doses and with certain magnesium salts. Take only the recommended dose of two capsules a day, and discontinue use if any adverse reactions occur.

What is the difference between magnesium glycinate and magnesium citrate?
Glycinate binds magnesium to the amino acid glycine, while citrate binds it to citric acid. Both are organic magnesium salts. They carry different amounts of elemental magnesium by weight, so compare the elemental magnesium per serving, not the compound weight, when choosing between products.

How does magnesium glycinate compare with magnesium L-threonate?
Magnesium L-threonate has been investigated mainly for its effect on magnesium levels in the brain, largely in animal research, and it supplies less elemental magnesium per dose. Magnesium glycinate suits a simple daily magnesium amount, declared here at 240 mg per serving.

Can I take magnesium glycinate with medication or other supplements?
Magnesium can bind to some medicines in the digestive tract, so the timing between them may matter. Speak to a healthcare professional or pharmacist before combining it with any medication, and count magnesium from other supplements towards your daily total.

Is magnesium glycinate suitable for people who train?
Magnesium Glycinate is intended for healthy adults aged 18 and over, including people who train regularly. Published research in active adults is mixed, with results varying by dose, form and duration, so MitoGenix states the dose clearly rather than promising performance outcomes.

Which foods contain magnesium?
Dark green leafy vegetables, nuts, seeds, legumes and whole grains are among the main dietary sources of magnesium, along with fish, chicken and beef. Health supplements are intended to complement a varied diet, not to replace one.

CAUTION: Store in a cool, dry place or below 25°C. Keep out of reach of children. Do not exceed the recommended dose. Not intended for children under 18 years, or pregnant or breastfeeding mothers. Individuals with a known medical condition should consult a healthcare professional before using this health supplement. Discontinue use if any adverse reactions occur.

See the full MitoGenix supplement range, or pair Magnesium Glycinate with L-Theanine as part of a daily stack.

SAHPRA DISCLAIMER: This unregistered medicine has not been evaluated by SAHPRA for its quality, safety or intended use. Health supplements are intended only to complement health or supplement your diet. This product is not intended to diagnose, treat, cure or prevent any disease.