NOW Magnesium Citrate Review
NOW Magnesium Citrate 200 mg Tablets are designed to provide essential nervous system support and are critical for numerous bodily functions. Magnesium, a vital mineral, plays a pivotal role in energy production and overall metabolism, making it indispensable for maintaining daily vitality. Beyond energy, it is fundamental for proper muscle contraction, ensuring smooth and efficient movement, and is crucial for nerve impulse transmission, which underpins healthy communication throughout the body. Furthermore, magnesium contributes significantly to bone mineralization, supporting strong and healthy skeletal structures. This mineral acts as a required cofactor for an estimated 300 enzymes, highlighting its widespread importance in biochemical reactions. These enzymes are involved in critical processes such as fatty acid synthesis, which is essential for cellular health, protein synthesis, vital for building and repairing tissues, and glucose metabolism, which manages blood sugar levels and energy release. Magnesium status is also integral for the effective regulation of calcium balance, primarily through its influence on the parathyroid gland, ensuring that calcium levels in the body are properly maintained. The NOW Magnesium Citrate tablets are off-white in color, and it is noted that natural color variations may occur, which is a normal characteristic of the product. NOW Foods emphasizes quality and ethical production, as evidenced by various certifications. These tablets are certified Halal, Keto-Friendly, and Kosher (Triangle K), making them suitable for a diverse range of dietary and religious preferences. They are also Non-GMO, ensuring that the ingredients are not genetically modified. The product adheres to stringent manufacturing standards, holding an Intertek GMP Supplement Certification, which signifies good manufacturing practices. Additionally, these tablets are Vegan, catering to plant-based lifestyles. The formulation is carefully crafted to be free from common allergens, as it is not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, or sesame ingredients. However, it is produced in a GMP facility that processes other ingredients containing these allergens, a standard disclosure for such facilities. Each serving consists of two tablets, providing 400 mg of elemental magnesium from magnesium citrate, fulfilling 95% of the daily value. The product is a fully reacted mineral supplement, indicating optimal bioavailability. NOW Foods, a family-owned company since 1968, is committed to sustainability, with the bottle itself being made from 100% PCR (post-consumer recycled) resin. The product is proudly made and quality tested in the USA using globally sourced ingredients, reflecting a commitment to both local production and global ingredient standards. This comprehensive approach ensures that consumers receive a high-quality, effective, and responsibly produced magnesium supplement to support their overall health and well-being.
Study, Trial or Testing Result SummaryMembersHuman studies
Review Totals and SummaryMembers101,961 reviews
Biohacker SummaryMembersWhat our biohacker panel says
RAL SummaryMembersThe tier and why
More DetailsMembersBody systems · Combine with · Possible side effects
Supplement FactsMagnesium 400 mg
| Magnesium (From Magnesium Citrate) | 400 mg | 100% |
Directions: Take 3 capsules daily, preferably in divided doses, with food.
Label source: Pureformulas · Report a label change
Graded October 23, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.

