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Vaqta Side Effects

Generic Name: hepatitis a adult vaccine

Note: This page contains side effects data for the generic drug hepatitis a adult vaccine. It is possible that some of the dosage forms included below may not apply to the brand name Vaqta.

In Summary

More frequent side effects include: pain at injection site and tenderness at injection site. See below for a comprehensive list of adverse effects.

For the Consumer

Applies to hepatitis a adult vaccine: intramuscular injectable, intramuscular solution, intramuscular suspension

As well as its needed effects, hepatitis a adult vaccine (the active ingredient contained in Vaqta) may cause unwanted side effects that require medical attention.

If any of the following side effects occur while taking hepatitis a adult vaccine, check with your doctor or nurse immediately:

More common:
  • Fever more than 99.5 degrees F
  • general feeling of discomfort or illness
  • unusual tiredness or weakness
  • Body aches or pain
  • chills
  • congestion
  • cough
  • difficulty with breathing or swallowing
  • dryness or soreness of the throat
  • ear congestion
  • headache
  • hives
  • hoarseness
  • itching, especially of the feet or hands
  • loss of voice
  • nasal congestion
  • reddening of the skin, especially around the ears
  • runny nose
  • shortness of breath
  • sneezing
  • sore throat
  • swelling of the eyes, face, or inside of the nose
  • swollen, painful, or tender lymph glands in the neck, armpit, or groin
  • tender, swollen glands in the neck
  • tightness in the chest
  • unusual tiredness or weakness (sudden and severe)
  • voice changes
  • wheezing
Incidence not known:
  • Abdominal or stomach pain
  • agitation
  • back pain
  • black, tarry stools
  • bleeding gums
  • blistering, peeling, or loosening of the skin
  • blood in the urine or stools
  • blurred vision
  • burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings in the hands, arms, feet, or legs
  • clay-colored stools
  • coma
  • confusion
  • dark urine
  • diarrhea
  • difficulty controlling your bladder or bowels
  • difficulty with walking
  • dizziness
  • drowsiness
  • fainting
  • fast heartbeat
  • feeling of discomfort
  • feeling sad or depressed
  • flu-like symptoms
  • forgetful
  • hallucinations
  • inability to move the arms and legs
  • increased sweating
  • inflammation of the joints
  • joint or muscle pain
  • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  • loss of appetite
  • muscle aches or cramps
  • nausea
  • pinpoint red spots on the skin
  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  • rash
  • red, irritated eyes
  • seizures
  • sensation of pins and needles
  • shakiness and unsteady walk
  • slurred speech
  • sores, ulcers, or white spots in the mouth or on the lips
  • stabbing pain
  • stiff neck
  • sudden numbness and weakness in the arms and legs
  • swollen lymph glands
  • unpleasant breath odor
  • unsteadiness, trembling, or other problems with muscle control or coordination
  • unusual bleeding or bruising
  • vomiting of blood
  • yellow eyes or skin

Minor Side Effects

Some hepatitis a adult vaccine side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:

More common:
  • Pain, redness, swelling, or lumps at the injection site
  • weight loss
Less common:
  • Arm pain
  • bleeding between periods
  • change in the amount of bleeding during periods
  • change in the pattern of monthly periods
  • lack or loss of strength
  • tenderness or warmth at the injection site
  • unusual stopping of menstrual bleeding
  • Change in color vision
  • change in taste
  • collection of blood under the skin
  • deep, dark purple bruise
  • difficulty seeing at night
  • difficulty with moving
  • dizziness or lightheadedness
  • excessive muscle tone
  • feeling of constant movement of self or surroundings
  • increased sensitivity of the eyes to sunlight
  • loss of taste
  • muscle tension or tightness
  • sensation of spinning
  • sleeplessness
  • trouble with sleeping
  • unable to sleep
  • welts
Incidence not known:
  • Bleeding, blistering, burning, coldness, discoloration of the skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site
  • sleepiness or unusual drowsiness

For Healthcare Professionals

Applies to hepatitis a adult vaccine: intramuscular suspension


Hepatitis A vaccine is generally well-tolerated. Most side effects were mild, self-limiting, and of short duration (<= 24 hours).[Ref]


Local side effects have included pain, tenderness, warmth, induration, erythema, swelling, ecchymosis, hematoma, and injection site pruritus and/or rash.[Ref]


Cardiovascular side effects have included syncope.[Ref]


Dermatologic side effects have included pruritus, rash, and urticaria.[Ref]


Gastrointestinal side effects have included anorexia, nausea, abdominal pain, diarrhea, dysgeusia, gastroenteritis, and vomiting.[Ref]


Genitourinary side effects have included menstruation disorder and isolated reports of increased urine protein.[Ref]


Hematologic side effects have rarely included lymphadenopathy, thrombocytopenia, and eosinophilia.[Ref]


Hepatic side effects have included isolated reports of elevated liver function tests.[Ref]


Hypersensitivity reactions have included bronchial constriction, asthma, wheezing, edema/swelling, rash, generalized erythema, urticaria, pruritus, eye irritation/itching, and dermatitis.[Ref]


Musculoskeletal side effects have included arthralgia, creatine phosphokinase elevations, myalgia, arm pain, back pain, and stiffness.[Ref]

Nervous system

Nervous system side effects have included headache, hypertonic episode, insomnia, somnolence, photophobia, vertigo, Guillain-Barre syndrome, cerebellar ataxia.[Ref]


Respiratory side effects have included pharyngitis, other upper respiratory tract infections, nasal congestion, and cough.[Ref]


Other side effects have included asthenia, fatigue, fever, and malaise.[Ref]


1. "Product Information. Vaqta (hepatitis A vaccine)." Merck & Company Inc, West Point, PA.

2. "Product Information. Havrix (hepatitis A vaccine)." SmithKline Beecham, Philadelphia, PA.

It is possible that some side effects of Vaqta may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.