Skip to main content

Up to 15% off products when you checkout or sign up


  • Gluten free

  • Dairy free

  • Soy free

  • Wheat free

  • Vegetarian

Magtein® L-Threonate Plus contains clinically studied Magtein® magnesium L- threonate with vitamins C and D3. it supports cognitive performance, including executive function and short-term memory*


Suggested Use / Directions:
Adults take 3 capsules daily. Best when taken in divided doses: take 1 capsule in the morning and 2 capsules one hour before bedtime. Not formulated for children. Do not exceed recommended dose.

Serving Size:
3 Capsules

Amount Per Serving:
Calories … 10
Total Carbohydrate … 2g
Vitamin C … 60mg
(ascorbic acid)
Vitamin D3 … 10 mcg (400 IU)
(as cholecalciferol)
Magnesium … 144mg
(from 2,000 mg Magtein® Magnesium L-Threonate)

Other Ingredients:
plant-derived capsule (hypromellose), cellulose, calcium laurate, silica


Do not take if you are pregnant or nursing. If you have kidney disease, or if you are taking any medications, consult a healthcare professional before use

About enhanced testing

Every product on Fullscript meets our high quality standards – but we don’t stop there. Enhanced Testing means select products are pulled directly from Fullscript’s shelves and tested by independent labs, so what’s on the label matches what’s in the product.

Learn more about the testing methods

Enhanced testing

Magtein® L-Threonate Plus

Integrative Therapeutics

$42.99

Sign up for exclusive store pricing

Shop the entire wellness catalog, held to a higher standard

Shop practitioner-grade products, each meeting the same bar for quality through Fullscript's standards.

Powered by
Sign up to shop
  • Verified

    Sourced straight from the brand — no resellers or fakes

  • Enhanced testing

    Select products are tested in-house — get exactly what the label promises

  • Stored and shipped

    From certified facilities, to protect product integrity