Magnesium L-Threonate (Magtein) Supplement

Each 4-capsule serving of Double Wood Magnesium L-Threonate provides 2,000 mg of Magtein® Magnesium L-Threonate, yielding 144 mg of elemental magnesium. This two-part dose matters because “Magtein®” refers to the full magnesium L-threonate compound, while “elemental magnesium” refers to the actual magnesium content delivered per serving.

Clinical studies on Magtein® Magnesium L-Threonate have typically used 1.5–2 g per day, with many adult studies using a 2 g daily dose. Double Wood Magnesium L-Threonate is designed to match that research-backed serving size: each 4-capsule serving provides 2,000 mg of Magtein® Magnesium L-Threonate, yielding 144 mg of elemental magnesium.

For most adults, the suggested serving is 4 capsules daily, often split between morning and evening. Some people prefer starting with 2 capsules for the first week to assess tolerance, then increasing to the full 4-capsule serving. Always follow the label directions and consult your healthcare provider if you are pregnant, nursing, taking medication, or managing a medical condition.

Magnesium L-threonate is a form of magnesium bound to L-threonic acid. Magtein® is the patented, clinically studied form of magnesium L-threonate used in research on brain magnesium levels, cognitive performance, and sleep quality. Double Wood Magnesium L-Threonate is made with Magtein®, not a generic magnesium L-threonate ingredient.

Magtein® Magnesium L-Threonate is commonly taken daily as part of a long-term cognitive health or sleep-support routine. Clinical studies have evaluated daily use over multiple weeks, including 6- and 12-week study periods. Always follow the label directions, and consult your healthcare provider if you are pregnant, nursing, taking medication, or managing a medical condition.

Some people notice changes in relaxation or sleep quality within the first 1–2 weeks of taking Magtein® Magnesium L-Threonate consistently, while cognitive benefits may take longer and were evaluated in studies over 6- and 12-week periods. Some users report vivid dreams or initial drowsiness, especially when taking it at night. If this happens, try taking it earlier in the evening, splitting the serving between morning and night, or starting with 2 capsules before increasing to the full 4-capsule serving. If drowsiness or discomfort continues, stop use and consult your healthcare provider.