Question 1

How long do Efavirenz side effects last?

Accepted Answer

Central nervous system symptoms (such as dizziness or abnormal dreams) are most common during the first 2–4 weeks of therapy and often improve with continued treatment. However, some psychiatric or other adverse reactions may persist and require medical evaluation.

Question 2

Does Efavirenz cause depression?

Accepted Answer

Yes. Efavirenz has been associated with serious psychiatric adverse reactions, including depression, suicidal ideation, and psychosis. Patients should be monitored closely, especially those with a history of mental health conditions.

Question 3

How long does Efavirenz stay in the body?

Accepted Answer

Efavirenz has a long elimination half-life (approximately 40–55 hours), allowing once-daily dosing. Because of this, the drug may remain in the body for several days after the last dose.

Question 4

Does food affect Efavirenz absorption?

Accepted Answer

Yes. Taking Efavirenz with food, especially high-fat meals, can increase drug levels in the blood and may increase the risk of side effects. It should be taken on an empty stomach, preferably at bedtime.

Question 5

How to reduce Efavirenz side effects?

Accepted Answer

Take the medication at bedtime to reduce central nervous system symptoms. Take it on an empty stomach. Avoid alcohol and recreational drugs, which may worsen side effects. Do not stop treatment without consulting your provider. Regular follow-up is important to monitor safety and effectiveness.

Efavirenz Tablets