• A bottle of PrimeSelf Magnesium L-Threonate supplement with branding and information about the product.
  • List of brain health benefits with icons on a teal background
  • Explanation of why Magtein is clinically studied, innovative, and trusted.
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Brain‑ready magnesium for clarity, calm, and better sleep.

Magnesium L-Threonate

R 599 ZAR
Size: 60 Capsules (60x 500mg)
A bottle of PrimeSelf Magnesium L-Threonate supplement with branding and information about the product.
R 599 ZAR
60 Capsules (60x ...

Featuring Magtein®, a unique patented form of magnesium that effectively crosses the blood-brain barrier. This specialised form of magnesium has been clinically studied for its superior ability to support cognitive function and maintain brain health.

Perfect for those seeking cognitive support, memory enhancement, or healthy brain aging.


✓ Brain Function
✓ Cognitive Support
✓ Neural Health
✓ Sleep Quality


Why Choose Magnesium L-Threonate: Vegan-friendly | ISO-certified | cGMP Compliant
Serving Size: 2 capsules Servings Per Container: 30
Benefits
  • Brain Function - Supports learning and memory formation
  • Cognitive Support - Helps maintain mental clarity
  • Neural Health - Promotes healthy brain aging
  • Sleep Quality - Supports restorative sleep patterns
Ingredients

Ingredients Per Serving:

  • Active Ingredient: Magtein® Magnesium L-Threonate (500mg, providing 36mg elemental magnesium)
The PrimeSelf Difference

  • Features patented Magtein® for brain health
  • Only magnesium proven to cross the blood–brain barrier
  • Supports memory, learning, and cognitive performance
  • Promotes relaxation and restorative sleep
  • Clinically researched and safe for daily use
View details
  • A bottle of PrimeSelf Magnesium L-Threonate supplement with branding and information about the product.
  • List of brain health benefits with icons on a teal background
  • Explanation of why Magtein is clinically studied, innovative, and trusted.
1 / 1
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Scientific Research & Evidence

Our ingredients are backed by peer-reviewed scientific research and clinical studies.

  1. “Magtein® is the only form of magnesium shown to effectively cross the blood–brain barrier, increasing brain magnesium levels to support learning and memory.”
  2. “In a 12-week clinical trial, older adults taking magnesium L-threonate (Magtein®) showed significant improvements in executive function, working memory, and overall cognitive performance compared to placebo.”


Referencing: 

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Frequently Asked Questions

1. How do I use PrimeSelf supplements?

Follow the usage instructions provided on each product label. Dosages may vary depending on the specific supplement, so always check the directions before use.
2. Are PrimeSelf products safe to take with other medications?

Our supplements are formulated with high-quality ingredients, but we recommend consulting your healthcare professional before combining them with prescription medication.
3. Are your supplements vegan and vegetarian friendly?

Many of our products are suitable for vegan and vegetarian diets. Please check the ingredient list on each product page for specific details.
4. Do your products contain any common allergens?

We clearly list all ingredients and allergens on each product page. Most of our supplements are free from gluten, soy, and dairy, but always review the label if you have specific sensitivities.
5. Where are PrimeSelf products made and tested?

All PrimeSelf supplements are manufactured in South Africa in GMP-certified facilities. Our ingredients are third-party tested for purity and quality.
6. What is your returns and money-back policy?

We offer a 30-day money-back guarantee on your first purchase. If you’re not satisfied, you can return your product within 30 days. Opened items are refundable on the first unit only; additional units must remain sealed.