Consumers facing flu season have their pick of an extensive array of dietary supplements, but it is buyer beware when it comes to buying and using these products.

According to the U.S. National Institutes of Health, there are certain things consumers should keep in mind when choosing a dietary supplement.  First, consumers should always check with their physician before taking a supplement and never self-diagnose health conditions.  Some supplements can interact with other prescriptions or aggravate existing health conditions.