They say not to use it whilst pg or b/f. I just put up with mine. Maybe ring the Mothersafe Drug Hotline (0293826539), they'll tell you. I had to use them quite a bit as I was on medication most of my pregnancy with DS, they are a great when you need advice on medications.

My DD got the virus (thanks to DH) when she was about 10 months old. Gee it knocked her about. You have to be really careful with babies and the virus as it can make them very sick.