Sarilumab Sarilumab is a biological therapy that's used to treat rheumatoid arthritis. Learn how it's used and about the risks and side-effects. Secukinumab Secukinumab is used to treat psoriatic arthritis and ankylosing spondylitis. Find out how long it takes to work, how it’s taken and possible side-effects. Steroid injections Steroid injections are used to treat inflammatory types of arthritis. Learn how they work, how long they take, risks and side-effects. Steroids Steroids control inflammation (e.g. in rheumatoid arthritis (RA), lupus and PMR). Learn how they’re used, risks and side-effects. Sulfasalazine Sulfasalazine (a DMARD) is used for rheumatoid arthritis, psoriatic arthritis and arthritis associated with bowel inflammation. Learn risks and side-effects.