Vitamins and minerals supplement reviews. See our full Vitamins & Minerals Guide.
Vitamins & Minerals
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Myo-inositol is one of the better-evidenced PCOS supplements, but the metabolic evidence and the fertility evidence are not the same thing. Here is an honest ...
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A systematic review of 18 RCTs found magnesium significantly reduces anxiety in sub-clinical populations. We explain the NMDA receptor mechanism, who benefits ...
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A 12-month RCT found vitamin D3 supplementation raised testosterone 25% in deficient men. We explain the mechanism, who benefits, and why this is a deficiency ...
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Vitamin D deficiency affects 40-60% of adults in northern climates. The symptoms are fatigue, bone pain, and muscle weakness — but a blood test is the only ...
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Which sleep supplements actually work? We rank by RCT evidence: magnesium glycinate and glycine (strong), melatonin 0.5mg (effective for timing), L-theanine ...
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Zinc raises testosterone in deficient men — but not in men with normal zinc levels. A meta-analysis of 20 RCTs confirms this. We explain who is actually ...
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How much vitamin D3 should you take with K2? The evidence: 2,000-4,000 IU D3 + 100-200mcg K2-MK7 daily. We explain the critical calcium routing mechanism and ...
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Which form of magnesium is best for sleep? We compare glycinate vs citrate bioavailability, GI tolerance, and the evidence — plus exactly how much elemental ...
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Probiotics are a +1,258% growth category. We review the human evidence for psychobiotics reducing depression and anxiety, the most evidence-backed IBS strain, ...
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Zinc deficiency affects 17% globally. We compare zinc forms by bioavailability, explain why oxide is useless, and review the RCT evidence for immune function, ...
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Glutathione is trending on TikTok Shop but most oral forms have poor bioavailability. We explain why Setria and liposomal forms work, and why NAC may be more ...
