“Zinc Gel for Colds?” New game. Good, bad, or useless? Helpful, harmful, or just a waste of money? First up: zinc-containing nasal gel as a cold remedy. It’s unclear whether oral zinc supplements help with a cold — but what about squirting zinc up your nose? Good, bad, or just snake oil? Bad. More than 100 reports of people losing their sense of smell, some permanently — forever.
Source: NutritionFacts.org
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