For patients initiating treatment with Rebif, Rebif 8.8 micrograms and Rebif 22 micrograms are available in an initiation pack composed of 6 individual doses of a 1 ml type 1 glass syringe with a stainless steel needle containing 0.2 ml of Rebif 8.8 micrograms solution for injection and 6 individual doses of a 1 ml type 1 glass syringe with a stainless steel needle containing 0.5 ml of Rebif 22 micrograms solution for injection.