The intravenous (IV) formulation has a half life of 2.2 hours, and the long-acting subcutaneous depot injection form has a half-life of 43 to 60 days due to its slow release. Considering that it takes about 5 half-lives for a drug to be eliminated from the body: Using the transdermal (skin) patch form, buprenorphine stays in the system for vOwdCU.

how many hours is half life 2