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The adverse event profile of albendazole differs between hydatid disease and neurocysticercosis. Adverse events occurring with a frequency of ≥ 1% in either disease are described in the table 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 events that were reported by investigators to be at least possibly or probably related to albendazole.
Adverse Event Incidence ≥ 1% in Hydatid Disease and Neurocysticercosis
|Adverse Event||Hydatid Disease||Neurocysticercosis|
|Abnormal Liver Function Tests||15.6||< 1.0|
|Raised Intracranial Pressure||0||1.5|
|Reversible Alopecia||1.6||< 1.0|
The following adverse events were observed at an incidence of < 1%:
Blood and Lymphatic System Disorders: Leukopenia. There have been rare reports of granulocytopenia, pancytopenia, agranulocytosis, or thrombocytopenia (see WARNINGS). Patients with liver disease, including hepatic echinococcosis, appear to be more at risk of bone marrow suppression (see WARNINGS and PRECAUTIONS).
Postmarketing Adverse Reactions: In addition to adverse events reported from clinical trials, the following events have been identified during world-wide post-approval use of ALBENZA (albendazole) . Because they are reported voluntarily from a population of unknown size, estimates of frequency cannot be made. These events have been chosen for inclusion due to a combination of their seriousness, frequency of reporting, or potential causal connection to ALBENZA (albendazole) .
Blood and Lymphatic System Disorders: Aplastic anemia, bone marrow suppression, neutropenia.
Renal and Urinary Disorders: Acute renal failure.
Read the Albenza (albendazole) Side Effects Center for a complete guide to possible side effects
Steady-state trough concentrations of albendazole sulfoxide were about 56% higher when 8 mg dexamethasone was coadministered with each dose of albendazole (15 mg/kg/day) in 8 neurocysticercosis patients.
In the fed state, praziquantel (40 mg/kg) increased mean maximum plasma concentration and area under the curve of albendazole sulfoxide by about 50% in healthy subjects (n = 10) compared with a separate group of subjects (n = 6) given albendazole alone. Mean Tmax and mean plasma elimination half-life of albendazole sulfoxide were unchanged. The pharmacokinetics of praziquantel were unchanged following coadministration with albendazole (400 mg).
Albendazole sulfoxide concentrations in bile and cystic fluid were increased (about 2-fold) in hydatid cyst patients treated with cimetidine (10 mg/kg/day) (n = 7) compared with albendazole (20 mg/kg/day) alone (n = 12). Albendazole sulfoxide plasma concentrations were unchanged 4 hours after dosing.
The pharmacokinetics of theophylline (aminophylline 5.8 mg/kg infused over 20 minutes) were unchanged following a single oral dose of albendazole (400 mg) in 6 healthy subjects.
Read the Albenza Drug Interactions Center for a complete guide to possible interactions
Last reviewed on RxList: 11/9/2009
This monograph has been modified to include the generic and brand name in many instances.
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