Genevac B Adult 20Mcg Vaccine 1Ml

Serum Institute Of India Ltd

AMPOULE of 1 ML
VIAL of 10 ML

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MRP ~~₹81.97~~

₹65.58

₹81.97/ML

20% off

*MRP inclusive of all taxes

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Safe packing and storage

Non returnable productView policy

Prescription required for this medicine

Store in refrigerator or (2° - 8° C) Do Not Freeze

Composition

Hepatitis B (0.02 Mg)

Genevac B Adult 20mcg Vaccine 1ml is used to help prevent hepatitis B virus (HBV) infection in adults. It belongs to the class of recombinant hepatitis B vaccines.

This vaccine is commonly prescribed for adults who are at increased risk of exposure to the hepatitis B virus infection, including healthcare workers, patients undergoing dialysis, individuals exposed to infected blood or body fluids, and people with chronic liver disease.

Inform your doctor before receiving this vaccine if you have a fever, bleeding disorders, weakened immunity, liver disease, or are taking other medicines. Complete the full vaccination schedule and follow the dosage frequency advised by your doctor for effective and long-term protection against hepatitis B infection.

Genevac B Adult 20mcg Vaccine 1ml is used to:

Help prevent hepatitis B virus (HBV) infection
Provide active immunity against hepatitis B infection
Help protect individuals at increased risk of exposure to the hepatitis B virus

Follow these instructions while receiving Genevac B Adult 20mcg Vaccine 1ml:

This vaccine should be administered only by a healthcare professional.
The injection is given according to the vaccination schedule advised by your doctor.
Complete all recommended doses for full protection against hepatitis B infection.
Inform your doctor if you develop a fever or severe illness before vaccination.
Do not self-administer unless specifically instructed by your healthcare provider.

Genevac B Adult 20mcg Vaccine 1ml is administered intramuscularly.

Genevac B Adult 20mcg Vaccine 1ml may cause side effects such as:

Pain or soreness at the injection site
Redness or swelling at the injection site
Mild fever
Fatigue
Headache

Management Of Side Effects:

Most side effects are mild and temporary and usually resolve within a few days after vaccination. However, if you experience any serious side effects or worsening of symptoms, consult your doctor.

Injection site pain or swelling: Applying a cool compress over the injection site may help reduce discomfort and swelling.
Headache: Rest, stay hydrated, and avoid activities that may worsen the headache. Consult your doctor if the headache becomes severe or persistent.

Genevac B Adult 20mcg Vaccine 1ml contains the following active ingredient:

Hepatitis B Surface Antigen Recombinant (0.02 mg): It is a recombinant vaccine antigen produced using recombinant DNA technology. After administration, it stimulates the immune system to recognise the hepatitis B surface antigen as a foreign substance and produce protective antibodies against it. These antibodies help provide immunity and reduce the risk of hepatitis B infection during future exposure to the virus.

Pregnancy

If you are pregnant or planning a pregnancy, consult your doctor before receiving this vaccine. Your doctor will assess the benefits and potential risks before vaccination.

Breastfeeding

Consult your doctor before receiving this vaccine while breastfeeding. The benefits of breastfeeding and the need for vaccination should be considered before administration.

Alcohol

Excessive alcohol intake may negatively affect liver health and overall immune function in some individuals. Patients with chronic liver disease, hepatitis, or other liver-related disorders should avoid excessive alcohol consumption while receiving Genevac B Adult 20mcg Vaccine 1ml.

Liver

Inform your doctor if you have liver disease or chronic hepatitis before receiving Genevac B Adult 20mcg Vaccine 1ml. Patients with liver disorders may particularly benefit from hepatitis B vaccination because hepatitis B infection can worsen liver-related complications.

Kidney

Patients with kidney disease, especially those undergoing dialysis, may require careful monitoring and completion of the recommended vaccination schedule for adequate protection.

Use In Driving And Operating Machinery

Genevac B Adult 20mcg Vaccine 1ml may occasionally cause dizziness, headache, or tiredness after vaccination. Avoid driving or operating machinery if you feel unwell.

Allergy

Do not receive Genevac B Adult 20mcg Vaccine 1ml if you have experienced a severe allergic reaction to a previous hepatitis B vaccine or are allergic to yeast or any component of the vaccine. Seek immediate medical attention if you develop a rash, swelling, severe allergic reactions, or breathing difficulty after vaccination.

Children

This formulation is intended for adults. Paediatric formulations and vaccination schedules may differ.

Older Patients

Older adults should receive Genevac B Adult 20mcg Vaccine 1ml under medical supervision. In some elderly individuals, the immune response may be comparatively lower and additional monitoring may be required.

Drug-Drug Interactions

Genevac B Adult 20mcg Vaccine 1ml may interact with the following medicines:

Immunosuppressant medicines (Prednisolone, Tacrolimus, Cyclosporine): These medicines may suppress antibody formation and reduce the immune response to hepatitis B vaccination, which may decrease protection against hepatitis B infection.
Anticancer medicines (Cyclophosphamide, Methotrexate): Chemotherapy medicines may weaken immune function and reduce vaccine effectiveness in some patients receiving treatment.

Drug-Disease Interactions

Genevac B Adult 20mcg Vaccine 1ml should be used with caution if you have:

Bleeding disorders (Haemophilia, Thrombocytopenia): Intramuscular administration may increase the risk of bleeding, bruising, or haematoma formation at the injection site in susceptible patients.
Immunocompromised conditions (HIV infection, immunosuppressive disorders): Patients with weakened immunity may develop a reduced antibody response after vaccination, which may lower protection against hepatitis B infection. Additional doses or antibody monitoring may be required in some patients.
Moderate or severe acute febrile illness: Vaccination may be postponed in patients with severe febrile illness or active infection because symptoms of the illness may interfere with vaccine response assessment.

Daily Dose

The dose of Genevac B Adult 20mcg Vaccine 1ml should be administered as prescribed by your doctor or healthcare professional. The vaccination schedule may vary depending on age, immune status, previous vaccination history, and risk of hepatitis B exposure. It is important to complete the full vaccination schedule for effective and long-term protection.

Over Dose

Overdose is unlikely because Genevac B Adult 20mcg Vaccine 1ml is administered by a healthcare professional. However, receiving more than the recommended amount may increase the risk of injection site reactions, fever, or discomfort. Seek medical attention if severe or unusual symptoms occur after vaccination.

Missed Dose

If you miss a scheduled dose of Genevac B Adult 20mcg Vaccine 1ml, contact your doctor or healthcare provider as soon as possible to reschedule it. Delayed or missed doses may reduce the effectiveness of protection against hepatitis B infection.

Store Genevac B Adult 20mcg Vaccine 1ml in a refrigerator at 2°C to 8°C.
Do not freeze. Discard the vaccine if accidentally frozen.
Protect from direct light.
Store in the original packaging until use.
Keep out of reach of children.
Do not use after the expiry date mentioned on the pack.

Avoid sharing razors, toothbrushes, needles, or other personal items that may come into contact with blood.
Practice safe sexual habits to reduce the risk of hepatitis B transmission.
Avoid excessive alcohol intake to support liver health.
Follow safe hygiene practices if exposed to blood or body fluids at work or home.

Fact Box

Dosage Forms Available	Injection
Habit Forming	No
Ailment	Prevention of hepatitis B virus (HBV) infection
Drug Category	Recombinant vaccine
Therapeutic Category	Vaccine for the prevention of hepatitis B infection

What is Genevac B Adult 20mcg Vaccine 1ml used for?

Genevac B Adult 20mcg Vaccine 1ml is used to help prevent hepatitis B infection by stimulating the immune system to produce protective antibodies against the hepatitis B virus.

Can Genevac B Adult 20mcg Vaccine 1ml cause hepatitis B infection?

No. This vaccine does not contain live hepatitis B virus and cannot transmit hepatitis B infection.

Why is it important to complete all vaccine doses?

Completing the full vaccination schedule helps provide adequate and long-lasting protection against hepatitis B infection.

What precautions should I take after receiving Genevac B Adult 20mcg Vaccine 1ml?

After receiving Genevac B Adult 20mcg Vaccine 1ml, remain seated or under observation for a short period if advised by your healthcare provider, as some people may occasionally feel dizzy or faint after vaccination. If you develop severe allergic reactions, difficulty breathing, or other unusual symptoms after receiving the vaccine, seek immediate medical attention.

Can Genevac B Adult 20mcg Vaccine 1ml cause fever after vaccination?

Yes, mild fever may occur in some individuals after vaccination. This is usually temporary and improves within a few days.

Can patients with liver disease receive Genevac B Adult 20mcg Vaccine 1ml?

Yes. Hepatitis B vaccination is commonly recommended for people with liver disease because preventing hepatitis B infection may help protect against additional liver damage.

Is Genevac B Adult 20mcg Vaccine 1ml suitable for healthcare workers?

Yes, healthcare workers are commonly advised to receive hepatitis B vaccination because of their increased risk of exposure to infected blood or body fluids.

Is Genevac B Adult 20mcg Vaccine 1ml safe during breastfeeding?

Breastfeeding mothers can generally receive this vaccine if advised by their doctor. Consult your healthcare provider before vaccination.

What should I do if I miss a scheduled vaccine dose?

Contact your doctor or healthcare provider as soon as possible to arrange the next dose.

Last Updated On 05 Jun. 2026 | 9:34AM (IST)

Certified Content

Written by

Dr. Sachin Singh

Medical Team Lead & Reviewer | 7 years

MBBS

Reviewed by

Dr. Mandeep Chadha

Lead Medical Content Reviewer | 12 years

MBBS, DNB (OBGY)

Check out Editorial Policy

Manufacturer details

212/2, Hadapsar, Off Soli Poonawalla Road, Pune 411028 India

Country of origin: INDIA

Expiry on or after: January 2027

In case of any issues, contact us:

support@truemeds.in|09240250346

Address: 6th floor, Urmi Corporate Park Solaris, Saki Vihar Road, Andheri East, Mumbai 400071

References

Centers for Disease Control and Prevention. (2025). Hepatitis B vaccine information statement. Retrieved June 3, 2026, from https://www.cdc.gov/vaccines/hcp/current-vis/hepatitis-b.html
U.S. Food and Drug Administration. (2018). ENGERIX-B (hepatitis B vaccine recombinant) injection: Prescribing information. Retrieved June 3, 2026, from https://www.fda.gov/media/119403/download
DrugBank Online. (2026). Hepatitis B vaccine (recombinant): Uses, interactions, mechanism of action. Retrieved June 3, 2026, from https://go.drugbank.com/drugs/DB11627

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Disclaimer

We, at Truemeds make a diligent attempt to deliver accurate, expert- drafted and thoroughly reviewed medicine related information to our consumers. However, it should, by no means, be considered a substitute for prescription from a certified doctor or a trustworthy doctor-patient relationship. In fact we detest any form of self medication without expert advice. The sole purpose of the information on our portal is to educate our consumers, which helps improve the communication between a doctor and a patient. The information by no means is complete in its entirety and should not be used to diagnose or treat any medical condition. No amount of information can replace the experience and expertise of a doctor, therefore his/her advice always holds priority and should be followed appropriately.

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CIN: U62099MH2019PTC320566

Telephone:09240250346

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Email: grievance-officer@truemeds.in

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