Source MS Trust:Results of the analysis of the 6 year data of the Department of Health (DH) MS Risk-sharing Scheme (RSS), published in the Lancet Neurology today, show that the disease modifying drugs Avonex, Betaferon, Copaxone and Rebif are cost effective and are clinically effective in reducing the progression of the disease in people with relapsing remitting multiple sclerosis (MS). Read on.