Natural Factors - Magnesium Citrate 450 mg - 180 capsules

High-Potency Magnesium for Muscle, Heart, and Bone Health

Natural Factors Magnesium Citrate delivers 450 mg of highly absorbable magnesium citrate per serving (150 mg per capsule, 3 capsules daily). Magnesium is one of the most important minerals in the body, playing essential roles in over 300 biochemical reactions—from muscle relaxation and nerve function to energy production, bone health, and cardiovascular support. This high-potency formula provides therapeutic levels of magnesium in the citrate form, which is easily absorbed and gentle on the digestive system.

Key Benefits

• 450 mg of magnesium citrate per serving – Therapeutic dose of highly bioavailable magnesium for comprehensive wellness support
• Supports muscle relaxation and recovery – Helps reduce muscle tension, cramps, spasms, and post-exercise soreness
• Promotes calm and restful sleep – Supports the nervous system and helps the body unwind naturally for better sleep quality
• Cardiovascular and bone health – Essential for maintaining healthy blood pressure, heart rhythm, and strong bones
• Energy production – Plays a critical role in converting food into cellular energy and combating fatigue
• Supports healthy blood sugar metabolism – Helps maintain insulin sensitivity and blood sugar already within normal range
• Gentle on digestion – Magnesium citrate is well-tolerated and less likely to cause digestive upset than other forms
• 180 capsules – Two-month supply for daily wellness support

Why Magnesium Citrate?

Magnesium citrate is one of the most bioavailable forms of magnesium, meaning it's efficiently absorbed by the body and well-tolerated by the digestive system. Unlike magnesium oxide, which has poor absorption rates (less than 4%), magnesium citrate delivers therapeutic levels of this essential mineral to support optimal health. The citrate form also has a gentle laxative effect at higher doses, making it beneficial for those seeking both magnesium supplementation and occasional digestive regularity support.

The Magnesium Deficiency Epidemic

Despite its critical importance, magnesium deficiency is extremely common, affecting an estimated 50% of Americans. Modern diets high in processed foods, stress, certain medications (including diuretics and proton pump inhibitors), and soil depletion all contribute to inadequate magnesium intake. Even mild deficiency can cause muscle cramps, fatigue, poor sleep, anxiety, and irregular heartbeat—making supplementation an important part of a comprehensive wellness strategy.

Who It's For

Magnesium Citrate is ideal for adults seeking to support muscle relaxation, improve sleep quality, maintain cardiovascular and bone health, boost energy levels, or address magnesium deficiency. It's especially beneficial for active individuals, those experiencing muscle cramps or tension, people with high stress levels, or anyone looking to support overall energy and vitality.

Suggested Use

Take 3 capsules daily with food, or as directed by a healthcare practitioner. Can be divided throughout the day (1 capsule with each meal) or taken all at once. For muscle relaxation and sleep support, take in the evening. For energy and daytime wellness, take in the morning or afternoon.

Important Note

Magnesium citrate may have a mild laxative effect, especially at higher doses. If you experience loose stools, reduce dosage or divide throughout the day. Consult your healthcare practitioner if you have kidney disease or are taking medications.

About Natural Factors

Natural Factors has been a trusted leader in science-backed nutritional supplements for over 60 years, combining rigorous quality standards with sustainably sourced ingredients. Every product is third-party tested to ensure purity, potency, and safety.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.