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Albendazole Side Effects

Medically reviewed by Last updated on May 22, 2024.

Applies to albendazole: oral tablet.

Serious side effects of Albendazole

Along with its needed effects, albendazole may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking albendazole:

Less common


Incidence not known

Other side effects of Albendazole

Some side effects of albendazole may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Less common


Incidence not known

For Healthcare Professionals

Applies to albendazole: compounding powder, oral tablet, oral tablet chewable.


Side effects differed between hydatid disease and neurocysticercosis. Symptoms were generally mild and resolved without treatment. Therapy was discontinued primarily due to leukopenia (0.7%) or hepatic abnormalities (3.8% in hydatid disease).[Ref]


Very common (10% or more): Elevated liver enzymes (up to 16%)

Uncommon (0.1% to 1%): Hepatitis

Frequency not reported: Hepatotoxicity, hepatic abnormalities, jaundice, hepatocellular damage

Postmarketing reports: Acute liver failure[Ref]

Mild to moderate elevated liver enzymes were very common.

Severe hepatic abnormalities, including jaundice and hepatocellular damage (possibly irreversible), have been reported during prolonged higher dose treatment of hydatid disease.

Elevated liver enzymes and hepatitis have also been reported during postmarketing experience.[Ref]

Nervous system

Very common (10% or more): Headache (up to 11%)

Common (1% to 10%): Raised intracranial pressure, dizziness, neurological events

Uncommon (0.1% to 1%): Vertigo, meningeal signs

Postmarketing reports: Somnolence, convulsion[Ref]

Headache has also been reported during postmarketing experience.[Ref]


Upper GI symptoms (e.g., epigastric/abdominal pain, nausea, vomiting) and GI disturbances (abdominal pain, nausea, vomiting) were reported.

Diarrhea has also been reported during postmarketing experience.[Ref]

Common (1% to 10%): Epigastric/abdominal pain, nausea, vomiting, upper gastrointestinal (GI) symptoms, GI disturbances

Uncommon (0.1% to 1%): Diarrhea

Rare (less than 0.1%): Pancreatitis[Ref]


Common (1% to 10%): Reversible alopecia (thinning of hair, moderate hair loss)

Uncommon (0.1% to 1%): Itchiness, skin rashes

Postmarketing reports: Erythema multiforme, Stevens-Johnson syndrome[Ref]

Reversible alopecia (thinning of hair and moderate hair loss) has also been reported during postmarketing experience.[Ref]


Fever has also been reported during postmarketing experience.[Ref]

Common (1% to 10%): Fever, hyperpyrexia

Postmarketing reports: Asthenia[Ref]


Agranulocytosis and pancytopenia have also been reported during postmarketing experience.

Patients with liver disease (including hepatic echinococcosis) appeared more susceptible to bone marrow suppression.[Ref]

Common (1% to 10%): Leukopenia

Rare (less than 0.1%): Low red cell count, pancytopenia, thrombocytopenia

Frequency not reported: Granulocytopenia, agranulocytosis

Postmarketing reports: Aplastic anemia, bone marrow suppression, neutropenia[Ref]


Uncommon (0.1% to 1%): Hypersensitivity reactions (including rash, pruritus, urticaria)[Ref]


Rare (less than 0.1%): Ocular maculopathy

Frequency not reported: Retinal damage

Postmarketing reports: Blurred vision[Ref]


Rare (less than 0.1%): Bone pain

Postmarketing reports: Rhabdomyolysis[Ref]


Rare (less than 0.1%): Proteinuria


Postmarketing reports: Acute renal failure[Ref]

Frequently asked questions


1. (2001) "Product Information. Albenza (albendazole)." SmithKline Beecham

2. Cerner Multum, Inc. "Australian Product Information."

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.