Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Drugs & Medications

Pedvax HIB (PF) intramuscular



This vaccine helps protect young children from Haemophilus influenzae type b (Hib) infection. Hib is a bacterial infection that can cause serious illness, including brain infection (meningitis). Children younger than age 5 are at highest risk for infection. Vaccination is the best way to protect against this life-threatening disease. Vaccines work by causing the body to produce its own protection (antibodies).

This vaccine is not usually used in children over the age of 5 or in adults.

How to use Pedvax HIB (PF) intramuscular

Read the Vaccine Information Statement available from your health care professional before receiving the vaccine. If you have any questions, ask your health care professional.

This medication is given by injection into a muscle by a health care professional. It is usually given in the upper thigh, or in the upper arm in older children.

A series of injections is needed to provide the best protection. It is very important that your child receive all the injections ordered by the doctor, or the vaccine may not work as well. Keep all scheduled medical appointments.

Hib vaccine can be given at the same time as the other usual childhood vaccinations (e.g., diphtheria/tetanus/pertussis, hepatitis, polio) either in the same injection or using a separate needle and injection site, depending on the types of vaccine being given.

Side Effects

Pain, swelling, and redness at the injection site may occur. Drowsiness, irritability/crying, loss of appetite, diarrhea, fever, or vomiting may also occur. If any of these effects persist or worsen, notify the doctor or pharmacist promptly.

Infrequently, temporary symptoms such as fainting/dizziness/lightheadedness, vision changes, numbness/tingling, or seizure-like movements have happened after vaccine injections. Tell your health care provider right away if your child has any of these symptoms soon after receiving an injection. Sitting or lying down may relieve symptoms.

Remember that your health care professional has prescribed this medication because he or she has judged that the benefit to your child is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Get medical help right away if your child has any very serious side effects, including: seizures, unresponsiveness.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

Contact the doctor for medical advice about side effects. The following numbers do not provide medical advice, but in the US you may report side effects to the Vaccine Adverse Event Reporting System (VAERS) at 1-800-822-7967. In Canada, you may call the Vaccine Safety Section at Public Health Agency of Canada at 1-866-844-0018.


Before receiving this vaccination, tell the health care professional if your child is allergic to it or to any other vaccines; or if your child has any other allergies. This product may contain inactive ingredients (such as latex), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before receiving this vaccine, tell your health care professional your child's medical history, especially of: high fever, moderate/severe acute illness, bleeding disorders, history of Guillain-Barre syndrome, a weakened immune system (e.g., due to cancer, HIV, leukemia, lymphoma, radiation treatment), vaccination history including previous reactions to any vaccines.

Patients with Hodgkin's disease should receive the vaccine at least 10-14 days before beginning treatment or wait at least 3 months after chemotherapy is stopped.

This vaccine is not recommended for use during pregnancy and is not usually used in adults.

It is unknown if this vaccine passes into breast milk. This vaccine is not usually used in adults. Consult your doctor before breast-feeding.


Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

Some products that may interact with this vaccine include: "blood thinners" (e.g., warfarin, heparins), corticosteroids (e.g., hydrocortisone, prednisone), cancer chemotherapy, drugs that lower the immune system (e.g., cyclosporine, tacrolimus).

This vaccine may interfere with certain laboratory tests, possibly causing false test results. Make sure laboratory personnel and all your child's doctors know if your child has recently been vaccinated.


Not applicable.


Consult the health care professional about the temporary use of acetaminophen to treat pain and fever due to this vaccine.

There are various combinations of vaccines available. Based on your child's age, vaccination history, and previous reaction to vaccines, your health care professional will determine the most appropriate vaccines. Discuss the risks and benefits of vaccination with your health care provider.

History of infection with Hib does not always protect against future infections with Hib bacteria. Your child should still receive this vaccine if your doctor orders it.

Missed Dose

It is important to receive each vaccination as scheduled. Be sure to make a note of when the vaccination was last given for your child's medical record.


Store in the refrigerator. Do not freeze. Protect from light. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.

Information last revised March 2015. Copyright(c) 2015 First Databank, Inc.


View Larger Picture
No data.
No data.


No data.
No data.
This medicine is a white vial.

Add to Cabinet

Add Adderall to my medicine cabinet.

Did you know?

With WebMD's Medicine Cabinet, you can check interactions with drugs.

Go to medicine cabinet

Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, expect as may be authorized by the applicable terms of use.

CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.

More about Drugs and Medications


Subscribe to free WebMD newsletters.

  • WebMD Daily

    WebMD Daily

    Subscribe to the WebMD Daily, and you'll get today's top health news and trending topics, and the latest and best information from WebMD.

  • Men's Health

    Men's Health

    Subscribe to the Men's Health newsletter for the latest on disease prevention, fitness, sex, nutrition, and more from WebMD.

  • Women's Health

    Women's Health

    Subscribe to the Women's Health newsletter for the latest on disease prevention, fitness, sex, diet, anti-aging, and more from WebMD.

By clicking Submit, I agree to the WebMD Terms & Conditions & Privacy Policy and understand that I may opt out of WebMD subscriptions at any time.

URAC: Accredited Health Web Site TRUSTe online privacy certification HONcode Seal AdChoices