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Evidence-scored vitamins ranked by the strength of their clinical research — with dosage, safety, and the goals each one actually supports.
Top picks: B-Complex, Choline, and Methylfolate.
Essential B vitamins in their active methylated forms, supporting energy production, mood, and cognitive function.
Precursor to acetylcholine and phosphatidylcholine — critical for memory, liver function, and cell membrane integrity.
Bioactive folate that bypasses MTHFR conversion — critical for the 30-40% of people with gene variants affecting mood and methylation.
First-line natural treatment for PCOS that improves insulin sensitivity and ovulation — also reduces anxiety, panic, and OCD symptoms.
NAD+ precursor that raises HDL, lowers LDL and triglycerides, and fuels cellular energy metabolism at therapeutic doses.
Component of FAD/FMN coenzymes for energy production — high-dose (400mg) clinically shown to reduce migraine frequency.
Converts carbohydrates into cellular energy and supports acetylcholine synthesis for healthy nerve and brain function.
Fat-soluble vitamin that maintains night vision, drives immune cell differentiation, and regulates skin turnover and cellular growth.
Drives nerve myelination, red blood cell formation, and DNA synthesis — deficiency is common in vegans, vegetarians, and older adults.
Cofactor in 100+ enzyme reactions including serotonin, dopamine, and GABA synthesis — also lowers homocysteine levels.
Hormone-like vitamin that regulates 1,000+ genes — deficiency is widespread and linked to poor immunity, depression, and bone loss.
Lipid-soluble antioxidant that shields cell membranes from oxidative damage — natural mixed tocopherols preferred over synthetic forms.
Fat-soluble form of vitamin B1 with superior absorption that protects against glycation and supports nerve health.
Cofactor for fatty acid synthesis and gluconeogenesis — strongest evidence for brittle nail syndrome and keratin infrastructure support.
Humans cannot synthesize this vitamin — required for collagen production, immune cell function, and iron absorption; athletes need more.
Vitamin-like compound that supports mood, sleep, and hormonal balance, with strong evidence for anxiety, OCD, and PCOS.
Required to synthesize coenzyme A (CoA), driving fatty acid metabolism, hormone production, and adrenal stress response.
Fat-soluble vitamin that directs calcium to bones instead of arteries, supporting cardiovascular and bone health.
Nutritional insurance that fills micronutrient gaps — COSMOS trial showed benefits for memory, cancer risk reduction, and immune function.