The US Food and Drug Administration has approved a new anti-HIV pill that combines four medicines to combat the virus that causes AIDS.
The agency approved Stribild as a once-a-day treatment to control HIV in adults who have not previously been treated.
Studies showed that up to 90 per cent of patients taking Stribild had an undetectable level of HIV in their blood after 48 weeks.
HIV develops into AIDS unless treated with antiviral drugs. AIDS causes the body's immune system to break down, leading to infections that are eventually fatal.