Thorne Magnesium Bisglycinate 200 mg | Supports Restful Sleep and Muscle Relaxation | 60 Servings

When it comes to essential minerals, magnesium is often called the "spark plug" of the human body, involved in over 600 biochemical reactions. Yet, not all magnesium is created equal. For many, standard magnesium supplements lead to a choice between efficacy and digestive comfort. Thorne Magnesium Bisglycinate solves this dilemma. This NSF Certified for Sport powder offers a highly bioavailable, fully reacted chelate that is exceptionally gentle on the stomach. Whether you are an elite athlete looking for post-exercise recovery, a busy professional seeking a calm and relaxed state of mind, or someone struggling with sleep onset, this formula provides the gold standard in mineral support. By pairing 200 mg of elemental magnesium with the inhibitory amino acid glycine, Thorne delivers a dual-action solution that supports your heart, muscles, and nervous system without the common side effects of lesser forms.

The Science of the Bisglycinate Chelate

The secret to the effectiveness of Thorne Magnesium Bisglycinate lies in its molecular structure. In this chelated form, a single magnesium cation is chemically bonded to two molecules of glycine. This "bisglycinate" structure creates an electronically neutral complex that protects the magnesium from reacting with other minerals or dietary phytates in the digestive tract. Unlike inorganic magnesium salts like magnesium oxide—which often have an absorption rate as low as 4% and act as osmotic laxatives—the bisglycinate form utilizes dipeptide transport pathways in the small intestine. Because it is absorbed as a whole molecule rather than relying solely on ion channels, it offers superior bioavailability. This transport mechanism is also pH-independent, making it an ideal choice for individuals with high or low stomach acid, including those using Proton Pump Inhibitors (PPIs). Physiologically, magnesium acts as a natural calcium channel blocker. While calcium triggers muscle contraction, magnesium facilitates relaxation. At the neurological level, magnesium acts as an NMDA receptor antagonist and a GABA agonist, which helps reduce central nervous system excitability. The addition of glycine further enhances this "calm-down" effect. Glycine is an inhibitory neurotransmitter that can cross the blood-brain barrier, where it has been shown to lower core body temperature—a primary biological signal that tells the body it is time for sleep. This synergistic combination helps improve sleep onset latency and promotes a restful night’s sleep without the grogginess associated with pharmaceutical sedatives.

Usage Guide

Thorne Magnesium Bisglycinate is a lightly sweetened, easy-to-mix powder. For best results, mix one scoop (3.11g) with at least 8 ounces of water. It can be taken at any time of day, but many users find the greatest benefit when consuming it 30 to 60 minutes before bedtime as part of a winding-down routine. To maximize the relaxation benefits, consider pairing your evening dose with a "digital detox" by reducing blue light exposure from screens. For athletes, it can be added to a post-workout recovery stack to support muscle glycogen resynthesis and relaxation.

Safety Information

While magnesium is a vital nutrient, certain precautions are necessary for safe supplementation:

• Renal Health Warning: Individuals with impaired renal function or chronic kidney disease (eGFR < 60) must consult a healthcare provider before use, as there is a risk of hypermagnesemia.
• Antibiotic Timing: Magnesium binds to certain medications in the gut. Separate dosing from antibiotics (specifically Tetracyclines and Fluoroquinolones) by at least 2 hours before or 6 hours after the medication.
• Medication Interactions: If you are taking bisphosphonates for bone density, separate your magnesium dose by at least 2 hours.
• Contraindications: This product should be avoided by individuals with Myasthenia Gravis, as magnesium may exacerbate muscle weakness.
• Side Effects: Excessive intake may cause mild drowsiness or loose stools in sensitive individuals.

Frequently Asked Questions

How does Magnesium Bisglycinate differ from Magnesium Citrate? Will this make me feel groggy in the morning? Why is this product NSF Certified for Sport? Can I take this if I have a sensitive stomach?