I was diagnosed with Influenza B and have been taking a coctail of Tamiful, Zpac, Mucinex, Claritin D, and Tynolel. Fevor broke after first dose, next day I felt good but on the 3 and 4th days I was experiencing a "high" like that of being on marijuana or alcohol. Not really a bad thing because I was not working or going to school, but still, a side effect.