Atripla is a prescription medication used to treat HIV infection in adults and children over 12 years old. It combines three antiretroviral drugs: efavirenz, emtricitabine, and tenofovir disoproxil fumarate. This combination helps to reduce the amount of HIV in the body, allowing the immune system to function better. Patients typically take Atripla once daily on an empty stomach, preferably at bedtime, to minimize side effects. Common side effects may include dizziness, insomnia, and rash. Regular medical check-ups are essential to monitor the effectiveness of the treatment and manage any potential side effects.