Dear Pharmacist: A friend of mine suggested that I get more vitamin A to help my immune system. I’ve always heard that vitamin D is better. Do you think that’s a good idea? — P.K., Rockwall, Texas
A: Yes, just keep in mind that vitamin A is not the be-all and end-all for immunity. You need adequate supplies of all vitamins and minerals to keep your immune system in tip-top shape, which will prepare you for the upcoming cold and flu season.
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