Thorne Magnesium Bisglycinate

Our assessment

Our assessment: Thorne Magnesium Bisglycinate provides a well-absorbed form of magnesium. The data confirms that magnesium supports muscle and nerve function, but specific benefits for this product depend on your individual needs. Data not available for specific clinical outcomes of this brand.

How it works

Think of magnesium as a key mineral for over 300 enzyme reactions in your body. The bisglycinate form is bound to the amino acid glycine, which may be gentler on the digestive system than other forms. It helps regulate muscle contractions and supports energy production [NIH ODS].

Safety profile

FDA received 694 adverse event reports for magnesium supplements. Side effects include nausea and diarrhea at high doses, though bisglycinate forms typically cause fewer gastrointestinal issues [FDA data]. Data not available for specific side effects of this product.

Our recommendation

Start with one capsule daily, preferably with food. Choose Thorne Magnesium Bisglycinate if you need a gentle form of magnesium. Monitor for any digestive discomfort. Data not available for optimal dosing or long-term safety of this specific product.

Supplement labels contain several key sections regulated by the FDA:

• Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
• Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
• % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
• Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
• Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.

Source: FDA Dietary Supplement Labeling Guide