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. — Mined from Carpenter's Exotic Animal Formulary, 6th Ed, p.801 (2026-08-01, PENDING REVIEW). 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. — Mined from Carpenter's Exotic Animal Formulary, 6th Ed, p.801 (2026-08-01, PENDING REVIEW) |
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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.
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.