Common Cold
Supplements studied for common cold.
Overview
Common cold research here centers on Echinacea, Vitamin C, Zinc, Vitamin D, and Eleuthero-containing Kan Jang. Echinacea may modestly reduce cold incidence and duration in some trials, though product and regimen differences limit consistency.
High-dose Vitamin C may slightly shorten symptom severity and duration but does not reliably prevent infection. Zinc and Vitamin D are marked possibly effective with multiple indexed trials. Kan Jang (eleuthero plus andrographis) started early may relieve symptoms within days in studied formulations. See the heatmap and evidence reviews below for product-specific outcomes.
Effect graph
Subscribe to access all content
Interactive visualisations of ranked conditions and clinical benefit with purchase guidance.
Already a subscriber? Sign in
Relevant supplements heatmap
Relevant supplements sorted by DEX Score.
Subscribe to access all content
See effect size, evidence strength, and trust at a glance for every condition.
Already a subscriber? Sign in
SupplementDEX Database
9 supplements for and rated at least stars. All purchase bands. No minimum star filter.
Subscribe to access all content
Read this and 2,600+ other evidence reviews on our practitioner plan.
Already a subscriber? Sign in
Evidence visualised
Subscribe to view condition evidence
Visual summaries of supplement evidence ranked by condition.
Already a subscriber? Sign in