Hib/Mening. CY (MenHibrix) February 28, 2019 admin Vaccines 0 Vaccine IngredientsIn addition to the live, attenuated or inactive virus, pathogen or toxoid, the Hib/Mening. CY (MenHibrix) vaccine contains the following ingredients:salinesemi-synthetic mediaformaldehydesucrosetris (trometamol)-HClSource: CDCView manufacturer's package insert