Approved in 2007 for Crohn's diseaseApproved for use in children ages 6 and upAlso approved for rheumatoid arthritis, plaque psoriasis, psoriatic arthritis, and ankylosing spondylitisTwo biosimilars are available: Cyltezo (Adalimumab-adbm) and Amjevita (Adalimumab-atto)Given as a shot under the skin using an auto-injector penFirst injection is four times the normal dose, the second dose is two times a normal dose, then one injection is needed every two weeksCost is about $2,900 per pen, Biologics are drugs made from living cells, and they can be a viable treatment for Crohn's disease. Learn more about which biologic drugs are available to treat Crohn's disease at WebMD., Biologic therapies are advanced drugs designed to treat the intestinal inflammation of Crohn's disease. Learn about how they work, their side effects, and more..