Medically reviewed by Jamie Johnson, RDN Key Takeaways Zinc may help prevent cold symptoms or shorten the length of a ...

Many people use zinc supplements to boost immunity or improve acne symptoms. Learn how much zinc is safe for you, and what to watch for if you use it long term.

Possible side effects from zinc supplements may include nausea, vomiting, diarrhea, headache, dizziness, numbness, weakness, ...

Learn which supplement is best for preventing and treating respiratory viruses, how to take them, and side effects to watch ...

The short answer is yes, zinc can be effective in reducing the duration of a cold. Research has consistently supported its role in shortening cold symptoms, particularly if taken early. A ...

NEW YORK (Reuters Health) - A new review of past studies suggests that taking zinc may cut the time adults have to suffer with a common cold, but the alternative treatment will likely come with ...