Used in the prevention and treatment of HIV-1 infection. Acts as an integrase strand transfer inhibitor, blocking the viral integrase enzyme to prevent HIV from replicating in human cells. Administered as a long-acting injectable formulation, it provides sustained drug levels, allowing for monthly or less frequent dosing. This makes it suitable for pre-exposure prophylaxis (PrEP) in high-risk individuals and as part of antiretroviral therapy (ART) in diagnosed patients, improving adherence compared to daily oral regimens.