Sambucol, Cold and Flu Relief works naturally with your body to provide fast temporary relief from nasal & sinus congestion runny nose, sore throat, coughing, sneezing and chills and fever. . Recommended for the whole family, Sambucol, Cold and Flu Relief can be used by ages 4 and up, and works best when taken at the first sign of cold or flu-like symptoms. Suitable for Vegetarians. No known drug interactions or side effects.