* *ADVISORY* *Nasal administration of zinc-containing preparations has been linked to permanent, irreversible loss of smell (anosmia). Doses greater than 100 mg per day may be associated with decreased HDL (good) cholesterol, decreased immune function and prostate cancer. These should be discussed with your health care provider.
DOSAGE:If you decide to try it, follow the dosage directions on the package.
CONCLUSION:There is not enough evidence to support the use of zinc for treating the common cold. There are still significant questions about its overall effectiveness, the differences between various kinds of zinc formulations, and the long-term safety of the nasal sprays (see advisory). If you decide to try it, remember to include it in your list of medications when you visit your doctor and other health care providers.
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