(Zoetis Animal Health) Inforce 3 is an intranasal vaccine used for the vaccination of healthy cattle for the prevention of respiratory disease caused by BRSV, and as an aid in preventing respiratory disease caused by IBR and PI3. Give 1 ml in each nostril. Calves vaccinated before 6 months of age should be revaccinated after 6 months of age. Annual booster is recommended. Safe for pregnant cows. Requires mixing.