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Efavir 600 Tablet

Efavirenz (600mg)

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Efavir 600 Tablet belongs to a group of medicines called antiretrovirals. It is used to treat HIV (human immunodeficiency virus), the virus that can cause AIDS (acquired immunodeficiency syndrome). It helps to control HIV infection so your immune system can work better.

Written By Dr. Sakshi Jain, MS, BDS,
Reviewed By Dr. Sachin Gupta, MD Pharmacology, MBBS,
Last updated on 29 Apr 2026 | 01:02 PM (IST)

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General Information

Contains

Efavirenz (600mg)

Marketer

Cipla Ltd

Storage

Store below 25°C

The content is shown in English

Product introduction

Efavir 600 Tablet reduces the chances of getting HIV-related complications and improves your lifespan. It can be taken empty stomach or with food and is prescribed in combination with other HIV medicines. Taking all these medicines regularly at the right times greatly increases their effectiveness and reduces the chances of HIV becoming resistant to them. It is important to keep taking them regularly until your doctor tells you it is safe to stop.

Common side effects of this medicine include headache, nausea, vomiting, stomach pain, fatigue, diarrhea, and rash. These are usually not serious but tell your doctor if they bother you or do not go away. Consult your doctor urgently if you experience a skin reaction or liver damage.

Before taking it, tell your doctor if you have any skin, liver, or kidney problems. While using it, you may need regular blood tests to check your blood cell counts and liver function. Avoid drinking alcohol as it may increase your risk of liver damage. Pregnant or breastfeeding mothers should consult their doctor before using this medicine. Do not have unprotected sex or share personal items like razors or toothbrushes, if you are HIV positive. Talk to your doctor about safe ways like condoms to prevent HIV transmission during sex.

Uses of Efavir Tablet

HIV infection

Benefits of Efavir Tablet

HIV infection
Efavir 600 Tablet is used as part of antiretroviral therapy to manage HIV infection. It helps lower the amount of virus in the body, supports the immune system, and reduces the risk of HIV-related complications. When taken consistently, it can improve long-term health and lower the chances of transmitting the virus to others.

Side effects of Efavir Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Efavir

Fatigue
Pain
Decreased appetite
Headache
Nausea
Dizziness
Vomiting
Increased liver enzymes
Insomnia (difficulty in sleeping)
Sleepiness
Abnormal dreams
Anxiety
Itching
Difficulty in paying attention
Rash
Abdominal pain
Diarrhea
Depression

How to use Efavir Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Efavir 600 Tablet is to be taken on an empty stomach.

How Efavir Tablet works

Efavir 600 Tablet prevents the multiplication of HIV virus in human cells, thereby stopping the HIV virus from producing new viruses.

All substitutes for Efavir 600 Tablet

For information purposes only. Consult a doctor before taking any medicine.

Quick tips

Efavir 600 Tablet is used in combination with other medicines for the treatment of HIV (human immunodeficiency virus).
Take it on an empty stomach, preferably at bedtime to reduce side effects.
Do not skip any doses and finish the full course of treatment even if you feel better.
You can also pass on HIV or HBV to others. Don't share needles or personal items that can have blood or body fluids on them.
Your doctor may check your liver function regularly. Inform your doctor if you notice yellowing of eyes or skin, dark urine, or stomach pain.
You might experience dizziness or abnormal dreams during initial days of treatment. Consult with a doctor if it bothers you or does not go away.
Use a reliable method of contraception to prevent pregnancy while taking this medicine.

Safety advice

Alcohol

CONSULT YOUR DOCTOR

It is not known whether it is safe to consume alcohol with Efavir 600 Tablet. Please consult your doctor.

Pregnancy

CONSULT YOUR DOCTOR

Efavir 600 Tablet is not recommended during pregnancy as there is positive evidence of fetal risk based on animal studies. However, it may still be prescribed by a doctor in situations where the benefits outweigh the risks.

Breast feeding

CONSULT YOUR DOCTOR

Efavir 600 Tablet may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.

Driving

UNSAFE

Efavir 600 Tablet may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.

Kidney

SAFE IF PRESCRIBED

Efavir 600 Tablet is probably safe to use in patients with kidney disease. Limited data suggest dose adjustment may not be needed.

Liver

UNSAFE

Efavir 600 Tablet is unsafe to use in patients with liver disease and should be avoided.
Use of Efavir 600 Tablet is not recommended in patients with moderate and severe liver disease.

Interaction with drugs

Taking Efavir with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Life-threatening

Ranolazine (Oral Route)

Do not consume Ranolazine with Efavirenz.

Life-threatening

Aripiprazole (Oral Route)

Do not consume Aripiprazole with Efavirenz.

Life-threatening

Pimozide (Oral Route)

Do not consume Pimozide with Efavirenz.

Life-threatening

Amiodarone (Oral Route)

Do not consume Efavirenz with Amiodarone.

Life-threatening

Amiodarone (Injection Route)

Do not consume Efavirenz with Amiodarone.

Frequently asked questions

What is Efavir 600 Tablet? What is it used for?

Efavir 600 Tablet belongs to a group of medicines called antiretrovirals. It is used to treat human immunodeficiency virus (HIV), which if not controlled can cause AIDS (acquired immunodeficiency syndrome). It helps to control HIV infection so your immune system can work better.

Is Efavir 600 Tablet safe?

Efavir 600 Tablet is safe if used in the dose and duration advised by your doctor. Take it exactly as directed and do not skip any dose. Follow your doctor's instructions carefully and let your doctor know if any of the side effects bother you.

How does Efavir 600 Tablet work?

Efavir 600 Tablet works by blocking the function of an enzyme, called reverse transcriptase, which is responsible for the HIV replication process. This helps to reduce the level of HIV in the blood.

Is Efavir 600 Tablet effective?

Efavir 600 Tablet is effective if used in the dose and duration advised by your doctor. Do not stop taking it even if you see improvement in your condition. If you stop using Efavir 600 Tablet too early, the symptoms may return or worsen.

What if I forget to take a dose of Efavir 600 Tablet?

If you forget a dose of Efavir 600 Tablet, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take the next scheduled dose in the prescribed time. Do not double the dose to make up for the missed one as this may increase the chances of developing side effects.

Is it safe to take Efavir 600 Tablet in pregnancy?

No, Efavir 600 Tablet is not safe to be taken in pregnancy. Some animal studies have shown that Efavir 600 Tablet may cause birth defects if given to pregnant mothers. Therefore, it is advisable not to take Efavir 600 Tablet if you are pregnant, planning to conceive or breastfeeding.

Fact Box

Chemical Class

Benzoxazines

Habit Forming

Therapeutic Class

ANTI INFECTIVES

Action Class

Non-Nucleoside Reverse Transcriptase Inhibitors (NNRTIs)

Related lab tests

HIV 1 & 2, Ab Western Blot

HIV 1 And 2 Antibody - Chromatography

HIV 1 And 2 Antibody - ELISA

References

Flexner C. Antiretroviral Agents and Treatment of HIV Infection. In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. New York, New York: McGraw-Hill Medical; 2011. pp. 1643-644.
Safrin S. Antiviral Agents. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. pp. 861-62..
Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 455-56.
Efavirenz. South Ruislip, Middlesex: Aurobindo Pharma - Milpharm Ltd.; 2014 [revised 10 Dec. 2018]. [Accessed 25 Jan. 2019] (online) Available from:
Efavirenz. Princeton, New Jersey: Bristol-Myers Squibb Company; 1998 [revised Sep. 2011]. [Accessed 31 Mar. 2019] (online) Available from:
Central Drugs Standard Control Organisation (CDSCO). [Accessed 31 Mar. 2019] (online) Available from:

User feedback

Patients taking Efavir 600 Tablet

Once A Day

96%

Twice A Day

What are you using Efavir Tablet for?

HIV infection

100%

How much was the improvement?

Average

67%

Poor

33%

What were the side-effects while using Efavir 600 Tablet?

No Side Effect

50%

Nausea

50%

How do you take Efavir Tablet?

With or without food

50%

With food

50%

Please rate Efavir 600 Tablet on price

Not Expensive

50%

Expensive

33%

Average

17%

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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Cipla Ltd
Address: Cipla House, Peninsula Business Park, Ganpatrao Kadam Marg, Lower Parel, Mumbai-400013

Vendor Details

Country of origin: India
A licensed vendor partner from your nearest location will deliver Efavir 600 Tablet. Once the pharmacy accepts your order, the details of the pharmacy will be shared with you. Acceptance of your order is based on the validity of your doctor's ℞ and the availability of this medicine.

In case of any issues, contact us

Email ID: [email protected]
Phone Number: 0124-4166666
Address: 5th Floor Tower - B of the Presidency Building, 46/4 Mehrauli Gurgaon Road, Sector 14, Gurugram, Haryana-122001, India

Lab tests offered by us

Why we need a prescription?

Efavir 600 Tablet

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General Information

Contains

Marketer

Storage

Product introduction

Uses of Efavir Tablet

Benefits of Efavir Tablet

Side effects of Efavir Tablet

How to use Efavir Tablet

How Efavir Tablet works

All substitutes for Efavir 600 Tablet

Efcure 600mg Tablet

Efamat 600mg Tablet

Efavirenz 600mg Tablet

Estiva 600 Tablet

Efarenz 600 Tablet

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Ranolazine (Oral Route)

Aripiprazole (Oral Route)

Pimozide (Oral Route)

Amiodarone (Oral Route)

Amiodarone (Injection Route)

Frequently asked questions

What is Efavir 600 Tablet? What is it used for?

Is Efavir 600 Tablet safe?

How does Efavir 600 Tablet work?

Is Efavir 600 Tablet effective?

What if I forget to take a dose of Efavir 600 Tablet?

Is it safe to take Efavir 600 Tablet in pregnancy?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

HIV 1 & 2, Ab Western Blot

HIV 1 And 2 Antibody - Chromatography

HIV 1 And 2 Antibody - ELISA

References

User feedback

Patients taking Efavir 600 Tablet

What are you using Efavir Tablet for?

How much was the improvement?

What were the side-effects while using Efavir 600 Tablet?

How do you take Efavir Tablet?

Please rate Efavir 600 Tablet on price

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

In case of any issues, contact us

Lab tests offered by us

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