Pocket Pet · Mus musculus · typical adult weight 0.02–0.04 kg
Morphine is dosed at 2–5 mg/kg SC, IM q4h in mice, per 7. Allweiler SI. How to improve anesthesia and analgesia in small mammals. Vet Clin North Am Exot Anim Pract. 2016;19:361-377.; 130. Morrisey JK, Carpenter JW. Formulary. In: Quesenberry KE, Carpenter JW, eds. Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery, 4th ed., Elsevier, St. Louis, MO; 2021:620-630. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.792 doi:10.1016/j.cvex.2016.01.012 — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery — ISBN 9780323484350, https://openlibrary.org/isbn/9780323484350. Morphine is used in mice for Analgesia (opioid). Routes documented in mice: SC, IM. A typical adult mouse weighs 0.02–0.04 kg. ExoticRx lists 1 cited dose rule for Morphine in mice, 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 | 7. Allweiler SI. How to improve anesthesia and analgesia in small mammals. Vet Clin North Am Exot Anim Pract. 2016;19:361-377.; 130. Morrisey JK, Carpenter JW. Formulary. In: Quesenberry KE, Carpenter JW, eds. Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery, 4th ed., Elsevier, St. Louis, MO; 2021:620-630. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.792 doi:10.1016/j.cvex.2016.01.012 — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery — ISBN 9780323484350, https://openlibrary.org/isbn/9780323484350 |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
| Dose (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 1–3 | SC | Carpenter's Exotic Animal Formulary, 6th edTable 9.4 | 1-3 mg/kg SC |
| 1–5 | SC | Carpenter's Exotic Animal Formulary, 6th edTable 9.4 | 1-5 mg/kg SC |
| 2–5 | SC | Carpenter's Exotic Animal Formulary, 6th edTable 9.4 | 2-5 mg/kg SC, IM q4h,130 |
| 2.5 | SC | Carpenter's Exotic Animal Formulary, 6th edTable 9.4 | 2.5 mg/kg SC q2-4h,122 |
Figures are transcribed from the cited page or table of each held edition and are shown for reference only. They are not dose recommendations, they do not feed the calculator, and none has been reviewed by a veterinarian.
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These ranges are per kg. Enter your mouse'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 mice may differ from canine / feline reference data — consult the primary citations listed with each rule.
Morphine dose range in mice, 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 mice: SC, IM.
Morphine is indicated in mice for: Analgesia (opioid).
These are general warnings for Morphine across species; consult the mouse 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 mice — 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.