Vitamin C
General micronutrient; supplementation is context-dependent. Evidence and dosing vary by outcome; high doses can cause GI issues.
womens-healthimmune-supportrecoveryskin-hair
Dosing model
FLATFixed dose (no body-weight scaling).
Min dose
200 mg
Max dose
1000 mg
Rounding
100 mg
Stacks containing Vitamin C
Public community stacks that include this ingredient.
womens-health
Hair + Nails Reality Check Stack
by@athlete
Minimalist approach that focuses on likely gaps and avoids mega-dosing trends.
Biotin (Vitamin B7)
2mg
Vitamin C
500mg
Zinc
15mg
New
Evidence
2 records
General health effects / safety
General healthy adults • Government evidence review
ODS health professional fact sheet summarizes evidence, dosing, and safety/UL (2,000 mg/day).
Dose: 500 mg • Duration: Varies by outcome
Common cold duration and severity
General adults; greater effect seen in people under heavy physical stress • Cochrane systematic review and meta-analysis
Cochrane review of regular vitamin C supplementation (≥200 mg/day) found a consistent ~8% reduction in cold duration in adults and ~14% in children, with no effect on cold incidence in the general population. Therapeutic use at cold onset showed no consistent benefit.
Dose: 1000 mg • Duration: Continuous daily supplementation
Forms
Capsule / tablet
Also available as powder