Can you take antivirals during pregnancy?

Tamiflu (oseltamivir) is an FDA: Class B drug. Animal studies have shown no increased risk of fetal malformations; no definitive studies have been done in humans. Your OB may feel the risk of taking Tamiflu (oseltamivir) is less than the risk of having the " flu". A Danish study showed a 3-fold increase in Austic Spectrum Disorder in progeny of women who had the " flu" or other viral illness with fever for a week during gestation.