3 capsules contain 2 gm magnesium l-threonate and 144 mg of magnesium. How much L-threonate is this? Product label says nothing.

Hi... The l-threonate is just a metabolite (salt) of vitamin C that is bound to the magnesium as a chelation agent to supposedly make the magnesium more bioavailable, particularly in the brain. It's not a substance that acts independently, or is counted independently, of the magnesium. It takes 2 gm of magnesium l-threonate to get 144 mg of actual elemental magnesium, such as you might find in more commonplace magnesium supplements... it's just that binding the magnesium with a chelation agent (in this case l-threonate) may make each mg of magnesium more bioavailable (esp in the brain), than larger amounts of regular magnesium. Wonder if you're thinking of, and maybe looking for, l-theanine? That's a totally different substance (supposed to provide a relaxed alertness) from green tea. If that's what you want, it is available as its own thing.

why does my bottle show Maltodextrin in the "other ingredients" but on the website label it does not show it? I bought this based on the ingredients.

This problem needs to be addressed and not pawned off. The June/July2016 reviews have a higher level of complaints. Update the photos if the manufacturer has changed ingredients!

why 2000 mg in some and 645 mg in others

2000 mg of magnesium threonate will yield 144 mg of elemental magnesium. This seems to be the recommended daily dosage. Three capsules, each containing 645 mg of magnesium threonate will be needed to give a daily dosage of 1935 mg (which is the same as 2000 mg within rounding error). But some brands use two larger capsules to provide the recommended daily dosage and these may be harder to swallow for some people.

Is it best to take with food or on empty stomach?

Best on an empty stomach. I take 2 am and 1 pm. Directions are 3 per day with 1 taken a few hours before bedtime and 2 taken during the day. I read that magnesium absorbs best on an empty stomach and some supplement instructions recommend taking that way also.

Desertcart Logo

Deliver to Peru

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🧠 Elevate your mind, stay sharp, and never miss a beat!

HIGH POTENCY DOSE - 667mg per capsule delivers effective magnesium levels for optimal absorption
EASY DAILY ROUTINE - Convenient capsule format with a simple 3-capsule serving for busy professionals
LONG LASTING SUPPLY - 180 capsules provide a 2-month regimen for consistent brain health
COGNITIVE CLARITY BOOST - Clinically studied Magtein formula to support memory and focus
PREMIUM QUALITY ASSURANCE - Secure packaging guarantees product integrity and freshness

Source Naturals Magtein Magnesium L-Threonate Capsules deliver 667mg of a brain-optimized magnesium compound per capsule, designed to support cognitive function and memory. With 180 capsules per bottle, this supplement offers a secure, high-quality, and convenient daily regimen tailored for professionals seeking enhanced mental clarity.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.