User:Mr. Ibrahem/Rilonacept

Rilonacept, sold under the brand name Arcalyst, is a medication used to treat cryopyrin-associated periodic syndromes, including familial cold autoinflammatory syndrome, and Muckle–Wells syndrome; deficiency of interleukin-1 receptor antagonist; and recurrent pericarditis. It is given by injection under the skin.

Common side effects pain at the site of injection and respiratory tract infection. Other side effects may include infections, cancer, and allergic reactions. There are concerns that use in pregnancy could harm the baby. It is an interleukin 1 receptor inhibitor.

Rilonacept was approved for medical use in the United States in 2008. While it was approved in Europe in 2009, this approval was withdrawn in 2012. In the United States, four vials of 220 mg cost about 21,000 USD as of 2021.