Adverse effects are usually mild and resolve without treatment.
Dermatologic Effects: Reversible alopecia (thinning of hair, and moderate hair loss), itchiness and/or skin rashes, erythema multiforme and Stevens-Johnson syndrome.
Gastrointestinal Effects: Abdominal pain, diarrhoea, nausea, vomiting.
Hematologic Effects: Low red cell count, leucopenia, pancytopenia, aplastic anaemia and agranulocytosis.
Hepatic Effects: Transiently raised hepatic enzymes, hepatitis, acute liver failure, jaundice, hepatocellular damage.
Immunologic Effects: Hypersensitivity reactions including rash, pruritus and urticaria.
Neurologic Effects: Dizziness, headache, symptoms associated with treatment for neurocysticercosis (e.g. seizures, raised intracranial pressure, hydrocephalus, focal signs).
Ophthalmic Effects: Albendazole induced retinal damage in patients with pre-existing cysticercosis retinal lesions.
Renal Effects: Proteinuria.
Others: Bone pain and fever.