Pocket Pet · Cavia porcellus · typical adult weight 0.70–1.20 kg
Levothyroxine is dosed at 10–20 ug/kg PO q24h in guinea pigs, per Ewringmann A, Gloeckner B. Leitsymptome bei Meerschweinchen, Chinchilla und Degu, Enke, Stuttgart, Germany; 2012. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.801 — Carpenter's Exotic Animal Formulary 6th ed, Table 9.7 (Miscellaneous Agents Used in Rodents). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929. Levothyroxine is used in guinea pigs for Hypothyroidism. Routes documented in guinea pigs: PO. A typical adult guinea pig weighs 0.70–1.20 kg. ExoticRx lists 1 cited dose rule for Levothyroxine in guinea pigs, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Soloxine, Thyro-Tabs
| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| PO | 10–20 ug/kg | q24h | Hypothyroidism | Moderate | Ewringmann A, Gloeckner B. Leitsymptome bei Meerschweinchen, Chinchilla und Degu, Enke, Stuttgart, Germany; 2012. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.801 — Carpenter's Exotic Animal Formulary 6th ed, Table 9.7 (Miscellaneous Agents Used in Rodents). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929 |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
The sources disagree for this combination. The ranges below do not overlap on a comparable route. This is not an error in one of them — published veterinary references differ, and reconciling them for a particular patient is a clinical judgement.
| Dose (mcg/kg) | Route | Source | As printed |
|---|---|---|---|
| 5 | PO | BSAVA Small Animal Formulary, 10th ed — Part B (Exotic Pets)p.193 | 5 μg (micrograms)/kg p.o. q12h |
| 5 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 9.7 | 5 μg/kg PO q12h |
| 10–20 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 9.7 | 10-20 μg/kg PO q24h |
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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Synthetic T4 (thyroxine) that is converted to active T3 in peripheral tissues. Restores normal metabolic rate, thermogenesis, and organ function.
Dose based on body weight, adjusted by monitoring serum T4 levels (4-6 hour post-pill sample). Give on empty stomach. Monitor for signs of thyrotoxicosis (tachycardia, panting, anxiety). Dogs primarily.
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.
Levothyroxine dose range in guinea pigs, with cited source references: PO 10–20 ug/kg q24h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Levothyroxine in guinea pigs: PO.
Levothyroxine is indicated in guinea pigs for: Hypothyroidism.
These are general warnings for Levothyroxine across species; consult the guinea pig dosing table above for species-specific guidance. Dose based on body weight, adjusted by monitoring serum T4 levels (4-6 hour post-pill sample). Give on empty stomach. Monitor for signs of thyrotoxicosis (tachycardia, panting, anxiety). Dogs primarily.
Why a species-specific page? Levothyroxine 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.