(Merck) Nobivac Feline 1-HCPCh (formerly Eclipse 4) is a modified live virus for protection against panleukopenia (cat distemper), calici, rhinotracheitis and chlamydia. For cats 9 weeks of age or older. Give IM or SQ. Repeat in 3-4 weeks. Annual revaccination is recommended. Not for pregnant queens. Nobivac Feline 1-HCPCh requires mixing. Order syringes separately.