causal
Analysis v1
Strong Support
Taking zinc lozenges with a certain ingredient can shorten how long you have a cold by almost half, according to studies on people with real colds.
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0
Evidence from Studies
Supporting (1)
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Community contributions welcome
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Zinc Lozenges May Shorten the Duration of Colds: A Systematic Review
Systematic Review With Meta-Analysis
2011The study looked at zinc lozenges and found that those with zinc acetate and at least 75 mg per day really do shorten colds by 42%, just like the claim says.
Contradicting (0)
0
Community contributions welcome
No contradicting evidence found
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.