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Albenza Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 6/12/2015

Albenza (albendazole) is a broad spectrum anthelmintic, or anti-worm medication used to treat certain infections caused by worms such as pork tapeworm and dog tapeworm. Common side effects of Albenza include nausea, vomiting, stomach and abdominal pain, headache, dizziness, or temporary hair loss.

Dosing of Albenza varies, depending upon which parasitic infection is being treated. Albenza may interact with other medications including antibiotics, cimetidine, dexamethasone, praziquantel, or theophylline. Tell your doctor all medications you are taking. During pregnancy, Albenza should be used only when prescribed. It may harm a fetus. Women of child-bearing age should have a negative pregnancy test before starting this medication. If you become pregnant, tell your doctor immediately. It is recommended that men and women use 2 effective forms of birth control (e.g., condoms and birth control pills) while taking Albenza and for 1 month after stopping the medication. It is not known if Albenza passes into breast milk. Consult your doctor before breast-feeding.

Our Albenza (albendazole) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is Patient Information in Detail?

Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.

Albenza in Detail - Patient Information: Side Effects

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have any of these serious side effects:

  • easy bruising or bleeding, unusual weakness;
  • fever, sore throat, and headache with a severe blistering, peeling, and red skin rash; or
  • fever with chills, body aches, or flu-like symptoms.

Less serious side effects may include:

  • stomach pain;
  • nausea, vomiting;
  • headache, dizziness; or
  • temporary hair loss.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Albenza (Albendazole)

What is Patient Information Overview?

A concise overview of the drug for the patient or caregiver from First DataBank.

Albenza Overview - Patient Information: Side Effects

SIDE EFFECTS: Nausea, vomiting, abdominal pain, headache, or temporary hair loss may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

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

Tell your doctor right away if you have any serious side effects, including: vision changes, yellowing eyes/skin, severe stomach/abdominal pain, dark urine, unusual tiredness, easy bruising/bleeding, signs of infection (e.g., fever, persistent sore throat), change in the amount of urine, severe/persistent headache, seizures, confusion, very stiff neck.

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.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Read the entire patient information overview for Albenza (Albendazole)

What is Prescribing information?

The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.

Albenza FDA Prescribing Information: Side Effects
(Adverse Reactions)


Clinical Trials Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

The adverse reaction profile of ALBENZA differs between hydatid disease and neurocysticercosis. Adverse reactions occurring with a frequency of 1% or greater in either disease are described in Table 2 below.

These symptoms were usually mild and resolved without treatment. Treatment discontinuations were predominantly due to leukopenia (0.7%) or hepatic abnormalities (3.8% in hydatid disease). The following incidence reflects adverse reactions that were reported to be at least possibly or probably related to ALBENZA.

Table 2: Adverse Reaction Incidence 1% or Greater in Hydatid Disease and Neurocysticercosis

Adverse Reaction Hydatid Disease Neurocysticercosis
Abdominal Pain 6 0
Nausea 4 6
Vomiting 4 6
General disorders and administration site conditions
Fever 1 0
Elevated Hepatic Enzymes 16 less than 1
Nervous system disorders
Dizziness 1 less than 1
Headache 1 11
Meningeal Signs 0 1
Raised Intracranial Pressure 0 2
Vertigo 1 less than 1
Skin and subcutaneous tissue disorders
Reversible Alopecia 2 less than 1

The following adverse events were observed at an incidence of less than 1%:

Blood and Lymphatic System Disorders: There have been reports of leukopenia, granulocytopenia, pancytopenia, agranulocytosis, or thrombocytopenia [see WARNINGS AND PRECAUTIONS].

Immune System Disorders: Hypersensitivity reactions, including rash and urticaria.

Postmarketing Experience

The following adverse reactions have been identified during post-approval use of ALBENZA. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

Blood and Lymphatic System Disorders: Aplastic anemia, bone marrow suppression, neutropenia.

Eye Disorders: Vision blurred.

Gastrointestinal Disorders: Diarrhea.

General System Disorders: Asthenia.

Hepatobiliary Disorders: Elevations of hepatic enzymes, hepatitis, acute liver failure.

Musculoskeletal and Connective Tissue Disorders: Rhabdomyolysis.

Nervous System Disorders: Somnolence, convulsion.

Renal and Urinary Disorders: Acute renal failure.

Skin and Subcutaneous Tissue Disorders: Erythema multiforme, Stevens-Johnson syndrome.

Read the entire FDA prescribing information for Albenza (Albendazole)

Albenza - User Reviews

Albenza User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Albenza sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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