 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST] , take this medication at the same time every day. Do not take more or less of this drug than prescribed or stop taking it even for a short time unless directed to do so by your doctor. Doing so may cause the amount of virus to increase, make the infection more difficult to treat (resistant), or worsen side effects.The side effects of Efavirenz-Lamivudine-Tenofovir Disoproxil Fumarate Oral: Dizziness, trouble sleeping, drowsiness, unusual dreams, and trouble concentrating may commonly occur. These side effects may begin 1 or 2 days after starting this medication, but usually get better within 2 to 4 weeks. Taking this medication at bedtime may help. Tiredness, headache, and diarrhea may also occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. As your immune system gets stronger, it can begin to fight off infections you already had, possibly causing disease symptoms to come back. You could also have symptoms if your immune system becomes overactive </s>