Hib/Mening. CY (MenHibrix) February 28, 2019 admin Vaccines 0 Vaccine Ingredients In addition to the live, attenuated or inactive virus, pathogen or toxoid, the Hib/Mening. CY (MenHibrix) vaccine contains the following ingredients: formaldehyde saline semi-synthetic media sucrose tris (trometamol)-HCl Source: CDC View manufacturer's package insert
