Cat · Felis catus · typical adult weight 2.50–7.00 kg
Vitamin C (Ascorbic Acid) is dosed at 10–30 mg/kg PO q12h in cats, per Plumb's Veterinary Drug Handbook, 10th ed (2023, held copy; the original seed cited the 9th, which was never consulted) — Plumb's 10th ed (held) printed p.96-97 (corpus PDF p.123-124), Ascorbic Acid monograph, Dosages [LOCATOR CORRECTED 2026-08-12 — the clause previously here named the Vitamin A monograph]; 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. Vitamin C (Ascorbic Acid) is used in cats for Antioxidant adjunct for toxin-induced methemoglobinemia (eg, acetaminophen, phenazopyridine). Routes documented in cats: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Vitamin C (Ascorbic Acid) in cats, drawn from published veterinary references. Verify against current literature before clinical use.
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 10–30 mg/kg | q12h | As needed | Antioxidant adjunct for toxin-induced methemoglobinemia (eg, acetaminophen, phenazopyridine) | Anecdotal | Plumb's Veterinary Drug Handbook, 10th ed (2023, held copy; the original seed cited the 9th, which was never consulted) — Plumb's 10th ed (held) printed p.96-97 (corpus PDF p.123-124), Ascorbic Acid monograph, Dosages [LOCATOR CORRECTED 2026-08-12 — the clause previously here named the Vitamin A monograph]; 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 (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 30–40 | SC | BSAVA Small Animal Formulary, 10th ed — Part A (Canine and Feline)p.446 | 30-40 mg/kg s.c. q6h for 7 treatments. Vitamin D (1,25-dihydroxycolecalciferol (active |
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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Essential antioxidant and cofactor in collagen synthesis, immune function, and iron absorption. Guinea pigs cannot synthesize vitamin C endogenously (obligate requirement).
ESSENTIAL supplement for guinea pigs (10-30 mg/kg/day minimum). Degrades rapidly in water — supplement daily. High parenteral doses may cause oxalate crystalluria. Most other species synthesize their own.
Species-specific contraindications and adverse-reaction reports for cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Vitamin C (Ascorbic Acid) dose range in cats, with cited source references: PO 10–30 mg/kg q12h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Vitamin C (Ascorbic Acid) in cats: PO.
Cited course lengths for Vitamin C (Ascorbic Acid) in cats include: As needed. Duration depends on the indication — match it to the specific dose rule in the table above.
Vitamin C (Ascorbic Acid) is indicated in cats for: Antioxidant adjunct for toxin-induced methemoglobinemia (eg, acetaminophen, phenazopyridine).
These are general warnings for Vitamin C (Ascorbic Acid) across species; consult the cat dosing table above for species-specific guidance. ESSENTIAL supplement for guinea pigs (10-30 mg/kg/day minimum). Degrades rapidly in water — supplement daily. High parenteral doses may cause oxalate crystalluria. Most other species synthesize their own.
Why a species-specific page? Vitamin C (Ascorbic Acid) pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in cats — 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.