skip to content
Home
Cart
Welcome!

New Customer?Create Account

Magtein® Magnesium L-Threonate

Supports memory, mental clarity, and brain function*

Brain & Memory
New to Metagenics? Get 30% off + free shipping on your first order. Use 30OFF at checkout. Terms apply.

Select Container Size

Feel more focused and clearheaded with Magtein® Magnesium L-Threonate. A specialized form of magnesium that supports brain health—helping you stay sharp, remember things more easily, and feel mentally energized. Designed to support your brain's health and cognitive performance.*

  • Boosts memory so you can stay sharp and focused*
  • Supports clear thinking and learning every day*
  • Enhances attention and mental energy when you need it most*
  • Promotes healthy brain cell activity*

What makes Magtein® Magnesium L-Threonate unique?

  • Clinically Studied Ingredient: Features magnesium L-threonate, a well-researched form of magnesium shown to support working memory and attention.*
  • Scientifically Formulated: Designed to deliver magnesium directly to the brain, supporting key functions linked to brain health, mental clarity, and focus.*
  • Fast-Acting Formula: Designed to start working in as little as 30 minutes.*

Science-Backed & Third-Party Tested

  • Quality: Formulated with a clinically tested ingredient.
  • Purity: Designed to deliver quality, purity, and efficacy.
  • Trusted by Healthcare Practitioners: Metagenics is the #1 Doctor-Recommended Professional Supplement Brand.
  • Science You Can Trust: For over 40 years, Metagenics has created high-quality supplements you can count on. Every ingredient is carefully chosen and tested for safety, purity, and results.

How to Take Magtein® Magnesium L-Threonate:

  • Dosage: Take three capsules daily in divided doses—one in the morning and two capsules approximately two hours before bedtime—or as directed by your healthcare practitioner.
  • Best For: Adults seeking a highly absorbable magnesium supplement that supports brain health, memory, and cognitive function.* If you are pregnant, nursing, or taking medication, consult your healthcare practitioner before use. Keep out of the reach of children.
  • Safe for Daily Use

Trusted Formula

Non-GMO | Gluten-Free | Sugar-Free | Lactose-Free | No Preservatives | Vegetarian

IngredientsAmount Per Serving% Daily Value
Serving Size3 Capsules†
Servings Per Container60
Per Serving (3 Capsules)
Magnesium (as magnesium L-threonate)98 mg23%
Magnesium L-Threonate††1.3 g*
Per Serving (3 Capsules)
Magnesium (as magnesium L-threonate)147 mg35%
Magnesium L-Threonate††2 g*

Other Ingredients: Capsule (hydroxypropylmethylcellulose), microcrystalline cellulose, stearic acid (vegetable), and silica.

Directions: Take three capsules in divided doses daily: one capsule in the morning and two capsules two hours before sleep as a dietary supplement, or as directed by your healthcare practitioner.

Dry Place

  • If pregnant or nursing, or taking medication, consult your healthcare practitioner before use. Keep out of the reach of children.

Frequently bought together

The Science That Creates Balance
Metagenics Special Ingredient Image
Metagenics delivers precision-crafted formulas to support your health—because true wellness starts with integrity, balance, & expertise.
"Have been taking it for 5 years for improved brain health and better sleep. I do feel better and sleep better when I'm taking it regularly. "
Rori
"Have been taking it for 5 years for improved brain health and better sleep. I do feel better and sleep better when I'm taking it regularly. "
Rori
The Science That Creates Balance
Metagenics Special Ingredient Image
Metagenics delivers precision-crafted formulas to support your health—because true wellness starts with integrity, balance, & expertise.

Customer Ratings & Reviews

Write A Review

Products you may like