Section 520.1425 - Metronidazole(a)Specifications. Each milliliter of suspension contains 125 milligrams (mg) metronidazole.(b)Sponsor. See No. 051311 in § 510.600(c) of this chapter.(c)Conditions of use - (1)Amount. Administer 25 mg per kilogram (11.3 mg per pound) of body weight twice daily for 5 consecutive days.(2)Indications for use. For the treatment of Giardia duodenalis infection in dogs.(3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. 89 FR 14410 , Feb. 27, 2024