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.

Product Focus: Bone Health
Tier ⓘ
Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Biohacker Mentions
Cost per month
$12
Study, Trial or Testing Result SummaryMembersHuman studies

study here tested magnesium taken by mouth as a supplement, and were done in people. of the findings come from animals given magnesium implants, scaffolds or granules placed directly into bone, so they say little about what a daily tablet might do for your bones. …

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Review Totals and SummaryMembers101,961 reviews
101,961 reviews · IHerb 70,361 · Centralmarket 28,348 · Amazon 2,013 · Vitacost 766 · Walmart 456 · GNC 9 · NOW Foods 5 · NHC 3

Customer feedback for NOW Magnesium Citrate 200 mg Tablets, while to five reviews, highlights key themes regarding product quality, service, and efficacy. A predominant sentiment revolves around the overall excellence of the product and the accompanying customer service. …

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Biohacker SummaryMembersWhat our biohacker panel says

The main reason is sleep, followed by blood pressure, heart and bone , brain function, and fixing levels. For form, they favor magnesium threonate (three of them, including two who take 400 mg before bed) and glycinate (two of them), while one that oxide absorbs . …

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RAL SummaryMembersThe tier and why
More DetailsMembersBody systems · Combine with · Possible side effects

Body systems: Skeletal system. Combine with and possible side are for members.

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Supplement FactsMagnesium 400 mg
Supplement Facts
Serving Size 2 Tablets
Servings Per Container 50
Amount Per Serving% Daily Value
Magnesium (From Magnesium Citrate)400 mg100%

Directions: Take 3 capsules daily, preferably in divided doses, with food.

Label source: Pureformulas · Report a label change

Where to BuyNOW · Amazon · iHerb
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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.