ExoticRx · exoticrx.com/drugs/fexofenadine
US brand names:Allegra
Fexofenadine is dosed at 2–5 mg/kg PO q12-24h in dogs, per Plumb's 10th ed printed p.521, Fexofenadine monograph. Verify against current literature before clinical use.
Active metabolite of terfenadine. Non-sedating selective peripheral H1 receptor antagonist that does not cross the blood-brain barrier significantly.
Minimal sedation. No cardiac effects (unlike terfenadine). Limited efficacy data in veterinary patients but considered safe.
Species references:All Dog (Domestic) drugs
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
A dog/cat sample is shown here. Cited dosing for all 1 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.
| Species | Route | Dose | Frequency | Evidence | Source |
|---|---|---|---|---|---|
| Dog (Domestic) | PO | 2–5 mg/kg | q12-24h | Weak | Plumb's 10th ed printed p.521, Fexofenadine monograph.Compilation only — we have not located an independent source that prints this figure. |
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View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.