Equine · Equus caballus · typical adult weight 350.00–700.00 kg
Lidocaine Antiarrhythmic is dosed at 1.3 mg/kg/h IV CRI in horses, per Plumb's Veterinary Drug Handbook, 10th ed (2023, held copy; the original seed cited the 9th, which was never consulted) — Lidocaine (Intravenous; Systemic), HORSES, Postoperative ileus/colic; printed p.758 (corpus PDF p.785), continued p.759 (PDF p.786) — Plumb's 10th ed (held) printed p.756-759 (corpus PDF p.783-786), Lidocaine (Intravenous; Systemic) monograph, Dosages [LOCATOR CORRECTED 2026-08-12 — the clause previously here named the Lidocaine Ophthalmic monograph, an ocular anaesthetic]; page located 2026-08-05 from the book's own running heads, verified to name the drug in its body text. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207. Lidocaine Antiarrhythmic is used in horses for Post-operative ileus, endotoxemia, arrhythmias. Routes documented in horses: IV. A typical adult horse weighs 350.00–700.00 kg. ExoticRx lists 1 cited dose rule for Lidocaine Antiarrhythmic in horses, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Xylocaine
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| IV | 1.3 mg/kg/h | CRI | 12-24h | Post-operative ileus, endotoxemia, arrhythmias | Weak | Plumb's Veterinary Drug Handbook, 10th ed (2023, held copy; the original seed cited the 9th, which was never consulted) — Lidocaine (Intravenous; Systemic), HORSES, Postoperative ileus/colic; printed p.758 (corpus PDF p.785), continued p.759 (PDF p.786) — Plumb's 10th ed (held) printed p.756-759 (corpus PDF p.783-786), Lidocaine (Intravenous; Systemic) monograph, Dosages [LOCATOR CORRECTED 2026-08-12 — the clause previously here named the Lidocaine Ophthalmic monograph, an ocular anaesthetic]; page located 2026-08-05 from the book's own running heads, verified to name the drug in its body text. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207 |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
| Dose (mcg/kg) | Route | Source | As printed |
|---|---|---|---|
| 50 | — | Papich Saunders Handbook of Veterinary Drugs, 4th edp.477 | a CRI of 0.05 mg/kg/min (50 mcg/kg/min). |
| 50 | IV | Papich Saunders Handbook of Veterinary Drugs, 4th edp.477 | • Analgesia: 2 mg/kg IV, followed by 50 mcg/kg/min CRI. |
| Dose (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 0.05 | — | Papich Saunders Handbook of Veterinary Drugs, 4th edp.477 | a CRI of 0.05 mg/kg/min (50 mcg/kg/min). |
One of the cited rules is a continuous-rate-infusion regimen: IV 1.3 mg/kg/h CRI. CRI regimens are delivered as a continuous infusion rather than discrete doses — verify the rate against the cited source before use.
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These ranges are per kg. Enter your horse's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Class IB antiarrhythmic blocking fast sodium channels preferentially in depolarized/ischemic tissue. Suppresses ventricular ectopy.
DOGS primarily — cats very sensitive to toxicity (lower doses). IV bolus then CRI. CNS toxicity (tremors, seizures) at excessive doses. Do not use with epinephrine formulation.
Species-specific contraindications and adverse-reaction reports for horses may differ from canine / feline reference data — consult the primary citations listed with each rule.
Lidocaine Antiarrhythmic dose range in horses, with cited source references: IV 1.3 mg/kg/h CRI. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Lidocaine Antiarrhythmic in horses: IV.
Cited course lengths for Lidocaine Antiarrhythmic in horses include: 12-24h. Duration depends on the indication — match it to the specific dose rule in the table above.
Lidocaine Antiarrhythmic is indicated in horses for: Post-operative ileus, endotoxemia, arrhythmias.
These are general warnings for Lidocaine Antiarrhythmic across species; consult the horse dosing table above for species-specific guidance. DOGS primarily — cats very sensitive to toxicity (lower doses). IV bolus then CRI. CNS toxicity (tremors, seizures) at excessive doses. Do not use with epinephrine formulation.
Why a species-specific page? Lidocaine Antiarrhythmic pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in horses — 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.
| 0.25–0.5 |
| IV |
| Papich Saunders Handbook of Veterinary Drugs, 4th edp.477 |
| • Antiarrhythmic: 0.25-0.5 mg/kg q5-15 min IV, for a total of 1.5 mg/kg, then as |
| 2 | IV | Papich Saunders Handbook of Veterinary Drugs, 4th edp.477 | • Analgesia: 2 mg/kg IV, followed by 50 mcg/kg/min CRI. |
| 1.3 | IV | Papich Saunders Handbook of Veterinary Drugs, 4th edp.477 | • Postoperative ileus: 1.3 mg/kg IV bolus administered over 15 min, followed by |
| 1.5 | IV | Papich Saunders Handbook of Veterinary Drugs, 4th edp.477 | • Antiarrhythmic: 0.25-0.5 mg/kg q5-15 min IV, for a total of 1.5 mg/kg, then as |
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.