Efavir is an HIV-1 NNRTI. The majority of this drug’s action is mediated by noncompetitive suppression of HIV-1 reverse transcriptase. Efavirenz does not affect HIV-2 reverse transcriptase or human cellular DNA polymerases and ö. 

Efavir is used in the treatment of human immunodeficiency virus (HIV) infections in conjunction with other medications. It seems to halt the degradation of the immune system and aid in the prevention of HIV replication.

Use this medication precisely as recommended by your physician. Follow the prescription of your doctor carefully. 

The medication dose your physician has given is based on your condition, other medications or food supplements you may take, and your reaction to treatment. To diminish your risks for adverse effects, don’t increase your dosage, take it regularly, or take it as instructed by your physician. Adverse events may still happen even at usual prescription dosages. 

If your physician requests you to use this drug consistently, use it regularly to get the most benefits from it. To make you remember it better, take it at a fixed time every day. 

Your doctor may need to modify your dosages to ease your symptoms or if you develop adverse reactions. 

If you have any inquiries with regards to information, ask your physician or pharmacist.

Efavir is used in the following conditions:

  • HIV infection

This medicine may be recommended for different uses. Approach your physician or pharmacist for more information.

Do not use Efavir in people with the following conditions:

  • Toxic skin eruptions
  • Erythema
  • SJS
  • Hypersensitivity

Efavir may have the following side effects:

  • Pancreatitis
  • Increased liver enzymes
  • Rash serum cholesterol
  • Vertigo
  • Stupor
  • Anxiety
  • Ataxia
  • Psychosis
  • Depression
  • Hepatitis
  • Diarrhea
  • Somnolence
  • Insomnia
  • Headache
  • Nausea
  • Impaired concentration
  • Fatigue
  • Stevens johnson syndrome
  • Rash
  • Itchiness
  • Rash
  • Dizziness

Keep in mind that your physician has recommended this drug since he or she has known that the advantage to you is more noteworthy than the risk of adverse reactions. Many individuals utilizing this medicine don’t have serious side effects.  

A serious allergy to this medication is uncommon. In any case, seek emergency medical help if you see any manifestations of a serious allergic response, including a rash, tingling or swelling, particularly of the face or tongue or throat, dizziness or difficulty in breathing. 

This is not a complete list of side effects. If you see other effects not recorded above, contact your physician or pharmacist.


Take extra caution in patients with the following medical conditions:

  • Hepatic failure
  • Drowsiness
  • Dizziness
  • Difficulty sleeping
  • Abnormal dreaming or difficulty concentrating
  • Children
  • Any evidence of infection, inflammation, or skin rash

Prior to taking this medicine, tell your physician or pharmacist if you are allergic to it, or if you have some other hypersensitivities. This drug may contain inert ingredients which can cause unfavorable side effects or different issues. Talk with your pharmacist for more information.


Efavir may interact with the following medicines:

  • Desacetyl diltiazem
  • Diltiazem
  • Proguanil
  • Atovaquone
  • Lumefantrine
  • Dihydroartemisinin
  • Artemether
  • Rifabutin
  • Posaconazole
  • Ketoconazole
  • Hydroxyitraconazole
  • Itraconazole
  • Voriconazole
  • Sertraline
  • Voxilaprevir
  • Velpatasvir
  • Boceprevir
  • Maraviroc
  • Saquinavir
  • Indinavir
  • Atazanavir
  • Amprenavir

Inform your physician about the drugs you take including over-the-counter medications, prescribed drugs, supplements and vitamins. 

This is not a complete list of drug interactions. Approach your physician or pharmacist for more details. 

The effects of certain medications can change if you consume different medications or herbal products simultaneously. This can build your risk for side effects or may cause your drugs not to work effectively. These interactions are conceivable, yet don’t generally happen. Your physician or pharmacist can prevent or oversee interactions by changing how you utilize your prescriptions or by close checking. 

While utilizing this drug, don’t start, stop, or change the dose of other medicines you are using without your physician’s advice.

Symptoms of overdose may include the following: 

  • Involuntary muscle contractions
  • Increased nervous system symptoms

Seek medical help immediately. 

Available Brands:

  • Efavirenz
  • Efavilea

Related Articles


Xeomin (incobotulinumtoxinA) is a prescription medication that belongs to a class of drugs known as neurotoxins. It is derived from [...]


WONCARE is a ointment is made to be put directly on skin and wounds. It treats skin and wound infections, [...]


Vamocef is a broad-spectrum antibiotic belonging to the cephalosporin class. It is commonly prescribed to treat a variety of bacterial [...]