Pocket Pet · Cavia porcellus · typical adult weight 0.70–1.20 kg
Morphine is dosed at 2–5 mg/kg SC, IM q4h in guinea pigs, per Flecknell PA. Analgesia and post-operative care. Laboratory Animal Anaesthesia; 2016:141-192. — Mined from Carpenter's Exotic Animal Formulary, 6th Ed, p.792 (2026-08-01, PENDING REVIEW) doi:10.1016/b978-0-12-800036-6.00004-1. Morphine is used in guinea pigs for Analgesia (opioid). Routes documented in guinea pigs: SC, IM. A typical adult guinea pig weighs 0.70–1.20 kg. ExoticRx lists 1 cited dose rule for Morphine in guinea pigs, drawn from published veterinary references. Verify against current literature before clinical use.
| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| SC, IM | 2–5 mg/kg | q4h | Analgesia (opioid) | Moderate | Flecknell PA. Analgesia and post-operative care. Laboratory Animal Anaesthesia; 2016:141-192. — Mined from Carpenter's Exotic Animal Formulary, 6th Ed, p.792 (2026-08-01, PENDING REVIEW) doi:10.1016/b978-0-12-800036-6.00004-1 |
Need the exact dose for your patient?
These ranges are per kg. Enter your guinea pig's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Prototype full mu-opioid receptor agonist. Activates mu, kappa, and delta opioid receptors producing analgesia, sedation, and euphoria.
Histamine release with rapid IV injection (hypotension, bronchoconstriction — give slowly). Vomiting and defecation common initial effects. Respiratory depression. Cats: may cause excitation/dysphoria at higher doses. Controlled substance (Schedule II).
Species-specific contraindications and adverse-reaction reports for guinea pigs may differ from canine / feline reference data — consult the primary citations listed with each rule.
Morphine dose range in guinea pigs, with cited source references: SC, IM 2–5 mg/kg q4h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Morphine in guinea pigs: SC, IM.
Morphine is indicated in guinea pigs for: Analgesia (opioid).
These are general warnings for Morphine across species; consult the guinea pig dosing table above for species-specific guidance. Histamine release with rapid IV injection (hypotension, bronchoconstriction — give slowly). Vomiting and defecation common initial effects. Respiratory depression. Cats: may cause excitation/dysphoria at higher doses. Controlled substance (Schedule II).
Why a species-specific page? Morphine pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in guinea pigs — 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.