Benzimidazoles
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This class of drugs are known by farmers as white drenches. The product code in the UK is 1-BZ. The most commonly used drugs in this category are; albendazole, fenbendazole and oxfendazole.
Spectrum of Activity
- Wide spectrum, they are active against adult and immature nematodes, though have limited action against hypobiotic forms.
- Some have activity against the cestodes.
- Albendazole has activity against adult liver flukes.
- Albendazole and fenbendazole are active against Giardia.
- Triclabendazole is active against all stages of Fasciola hepatica, but inactive against nematodes and cestodes.
- They