I am a college student, and encounter many germs and viruses amoung my peers. Coming to Florida from Philadelphia for school is a big change in certain allergies too. My mom recommended this to me when I felt myself coming on with something. I can honestly say that this product is amazing. It has stopped any type of illness that I have ever come on with. It did not work just once, but has worked continually over the four years I have been in school. Sometimes antibiodics are needed if you are really sick, but elderberry (90 %) of the time stops the virus or infection dead in its tracks. The key is to take it as soon as you feel crummy, in a double dose strength (4 tablespoons) twice a day. Then finish off the bottle in regular doses once a day. If you are a college student or know one, recommending black elderberry to them will really help them out when they get sick.