Table 57-6.

Drugs Used for the Treatment of Giardia Spp. Infections

Drug	Species	Dose
Metronidazole	B	15 to 25 mg/kg PO q12-24h for 5 to 7 days
Ronidazole	F	20 mg/kg, PO q12h for 14 days (primarily used for T. foetus; neurotoxicity common)
Tinidazole	C	44 mg/kg PO q24h for 3 days
Ipronidazole	C	126 mg/L of water PO ad libitum for 7 days
Fenbendazole	B	50 mg/kg PO daily for 3 to 5 days
	B	15 mg/kg PO q12h for 2 days (less commonly used because of bone marrow toxicity)
Pyrantel, praziquantel, febantel	C	Label dose for 3 days
	F	Feline dose: 56 mg/kg (based on the febantel component) PO daily for 5 days
Quinacrine	C	9 mg/kg PO q24h for 6 days
	F	11 mg/kg PO q24h for 12 days
Furazolidone	F	4 mg/kg PO q12h for 7 to 10 days

B, Canine and feline; C, canine; F, feline.