Magnesium L-Threonate Supplement – 186mg | Made in Canada | 180 Vegetable Capsules

What Is Magnesium L-Threonate?

Magnesium L-threonate is a chelated form of magnesium in which the mineral is bonded to L-threonic acid — a naturally occurring metabolite of vitamin C. This molecular pairing was developed through scientific research to address one of the core limitations of conventional magnesium supplementation: poor absorption. The chelated structure allows magnesium to be absorbed via amino acid transport pathways, bypassing the saturable mineral transporters that limit uptake of common inorganic forms like magnesium oxide.

The bioavailability advantage is well-documented. A study evaluating relative magnesium absorption found that magnesium L-threonate demonstrated approximately 60% relative absorption — statistically higher than magnesium chloride, gluconate, and citrate, which ranged between 40–45%. Unlike magnesium oxide, which has an estimated absorption rate as low as 4%, the chelated structure of magnesium L-threonate ensures a far greater proportion of the elemental magnesium actually reaches systemic circulation.

Why Herba® Chose This Form

Not all magnesium supplements are formulated with equal precision. Many products on the market under-deliver on elemental magnesium per serving or rely on poorly absorbed inorganic forms. Herba® Magnesium L-Threonate was formulated to close that gap — delivering 2,250 mg of magnesium L-threonate per serving and yielding 186 mg of elemental magnesium across just 3 capsules per day.

Each capsule provides 62 mg of elemental magnesium sourced from 750 mg of magnesium L-threonate. That precision in formulation — combined with the chelated form's high bioavailability — means more of what you take is actually put to use. Our supplement is also third-party tested for purity, heavy metals, and microbial contamination, so you can feel confident in what's inside every capsule.

Clean Formulation, Canadian Standards

The product is manufactured in Canada following cGMP (Good Manufacturing Practice) standards and holds an NPN (Natural Product Number) license issued by Health Canada, confirming it has met Canada's federal standards for safety, quality, and efficacy under the Natural Health Products Regulations.

Recommended Uses

• Helps in energy metabolism and tissue formation.
• Helps in the development and maintenance of bones and teeth.
• Helps to support heart muscle function.
• Helps to support normal electrolyte balance.
• Helps to support normal muscle function, including the heart muscle.
• Helps to support the body's ability to metabolize nutrients.
• Source of mineral, a factor in the maintenance of good health.

Medicinal ingredients (per capsules):

• Magnesium* (Magnesium L-threonate) - 62mg

*The medicinal ingredient quantity represents the amount of the element per serving sourced from 750mg of magnesium l-threonate.

Non-medicinal ingredients

• Hypromellose, L-leucine, cellulose

Directions:

• Adults: Take 3 capsules 1 time per day

Q. What is magnesium L-threonate and how is it different from other forms of magnesium?
A. Magnesium L-threonate is a chelated form where magnesium is bonded to L-threonic acid, a vitamin C metabolite. Unlike common forms such as magnesium oxide — which has an estimated absorption rate as low as 4% — magnesium L-threonate is absorbed via amino acid transport pathways, giving it a significantly higher bioavailability profile.

Q. How much elemental magnesium does Herba® Magnesium L-Threonate provide per serving?
A. Each 3-capsule serving delivers 186 mg of elemental magnesium, sourced from 2,250 mg of magnesium L-threonate (750 mg per capsule, yielding 62 mg elemental magnesium each). This is approximately 30% more elemental magnesium per serving than the typical industry standard.

Q. How do I take Herba® Magnesium L-Threonate?
A. The recommended dose for adults 18 years and over is 3 capsules taken 1 time per day.

Q. How long does one bottle last?
A. Each bottle contains 180 vegetable capsules. At the recommended serving of 3 capsules per day, one bottle provides a full 60-day (2-month) supply.

Q. Is Herba® Magnesium L-Threonate suitable for vegans?
A. Yes. The capsule shell is made from hypromellose, a plant-derived material, making the product fully vegan. It is also non-GMO and gluten-free, with non-medicinal ingredients limited to cellulose, hypromellose, and L-leucine.

Q. What does "third-party tested" mean for this product?
A. Third-party testing means an independent laboratory — not affiliated with Herba Health — verifies the purity, potency, and safety of the product. Herba® Magnesium L-Threonate is specifically tested for heavy metals and microbial contamination, providing an additional layer of quality assurance beyond in-house manufacturing controls.

Q. What is an NPN and why does it matter?
A. NPN stands for Natural Product Number — a license issued by Health Canada under the Natural Health Products Regulations. An NPN confirms that a product's safety, efficacy, and quality have been reviewed and accepted by Canada's federal health authority. Herba® Magnesium L-Threonate holds NPN 80127498.

. Is this product made in Canada?
A. Yes. Herba® Magnesium L-Threonate is proudly manufactured in Canada by Herba Health Inc., based in Toronto, Ontario, following cGMP (Good Manufacturing Practice) standards.