The cash price for Entyvio is $9,135 for a 300 mg powder for intravenous (IV) injection, using an online coupon, but most people do not pay this amount. After your initial 2 injections in the first month, IV Enytvio is normally given every 8 weeks starting at week 6. It also comes as a subcutaneous (under the skin) injection that is given every 2 weeks.