Veterinary Drug Handbook (VDH) is the reference veterinarians turn to when they want an independent source of information on the drugs that are used in veterinary medicine today.

Methoprene

Precor. An insect growth regulator. Present in rinses, sprays, collars, and household sprays/foggers. Recently added to a topical pour-on product containing fipronil (TopSpot Plus: Meriel).
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