Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Loperamide is used in dog for Acute noninfectious diarrhea, Non-infectious diarrhea. Routes documented in dog: PO. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 2 cited dose rules for Loperamide in dog, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Imodium
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These ranges are per kg. Enter your dog's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Mu-opioid receptor agonist in GI tract, slowing motility and increasing segmental contractions. Increases fluid/electrolyte absorption.
CONTRAINDICATED in MDR1-mutant dogs (crosses BBB — severe CNS depression). Avoid in cats. Do not use in infectious diarrhea. May cause constipation, bloating, ileus.
Species-specific contraindications and adverse-reaction reports for dog may differ from canine / feline reference data — consult the primary citations listed with each rule.
Why a species-specific page? Loperamide pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in dog — the rules above are the citations specific to this species, not generic recommendations.
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.