Actemra (tocilizumab) is a member of the interleukin inhibitors drug class and is commonly used for COVID-19, Cytokine Release Syndrome, Giant Cell Arteritis, and others. Actemra Prices. The cost for Actemra intravenous solution (20 mg/mL) is around $491 for a supply of 4 milliliters, depending on the pharmacy you visit.