Strong
2 sources reviewed
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No ratings yet
Time to effect
8+ weeks for prevention
Effort level
low
Category
Natural
Typical approach
Supplement / herb
How it works
Vitamin C supports multiple immune functions including neutrophil and lymphocyte activity. During infection, plasma vitamin C is rapidly depleted by the metabolic demands of immune response.
Regular supplementation reduces cold duration by about 8% in adults (14% in children). Does not prevent colds in the general population. May reduce severity.
Cochrane review of 29 trials found regular vitamin C supplementation does not prevent colds but modestly reduces duration and severity.
Community experiences
Anonymous · 0xa3f2
Tried for 6 weeks
“Noticeably less frequent issues after about a month of consistent use. Worth sticking with.”
Anonymous · 0xb71c
Tried for 4 weeks
“Good results overall. Had to adjust the approach slightly but found what worked for me. Would recommend trying it.”
Anonymous · 0xc8a1
Tried for 2 weeks
“Some improvement but not as dramatic as I hoped. Might need longer to see full benefit. Still continuing.”
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