causal
Analysis v1
Strong Support
Taking zinc lozenges every couple of hours when you have a cold might help you get better faster, cutting the time you feel sick from about a week to just over four days.
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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 MarThe study tested exactly what the claim says—zinc lozenges taken every 2 hours for colds—and found they shortened symptoms from over 7 days to about 4 days, just like the claim states.
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.