in as little as two and a half days when used at the first sign. abreva starts to work immediately to block the virus and protect healthy cells. abreva acts on it. so you can too. fothere's a seriousy boomers virus out there that's been almost forgotten. it's hepatitis c. one in 30 boomers has hep c, yet most don't even know it. because it can hide in your body for years without symptoms, and it's not tested for in routine blood work. the cdc recommends all baby boomers get tested. if you have hep c, it can be cured. for us it's time to get tested. ask your healthcare provider for the simple blood test. it's the only way to know for sure.