Scientists still don't know exactly how zinc lozenges help shorten how long you feel sick with a cold.
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0
Evidence from Studies
Supporting (1)
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Community contributions welcome
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Zinc Lozenges Reduce the Duration of Common Cold Symptoms
Randomized Controlled Trial
Human
1997 MarContradicting (0)
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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.