Which category of drugs is primarily used to manage parasitic infections?

The primary category of drugs used to manage parasitic infections is anti-parasitic. These medications are specifically designed to target and eliminate parasites, which can include various organisms such as worms, protozoa, and ectoparasites like fleas and ticks. Anti-parasitic drugs work by disrupting the life cycles and metabolic processes of these parasites, effectively treating the infections they cause in animals.

In contrast, antibiotics are used to treat bacterial infections, not parasitic ones, and are ineffective against parasites. Analgesics are medications that relieve pain, focusing on symptom management rather than treating underlying infections. Immunosuppressants are used to reduce the immune response in certain diseases or conditions, not for direct treatment of parasitic infections. Therefore, for managing parasitic infections specifically, anti-parasitic drugs are the correct and appropriate choice.