Pharmacokinetics of L-Thyroxine after Oral Administration to Healthy Cats

Le Traon G., Burgaud S. and Horspool L.J.

Conference Proceedings, (2009). European College of  Veterinary Internal Medicine – Companion Animals: p.269

Hyperthyroid cats may become (transiently) hypothyroid following 131I radiotherapy or surgical thyroidectomy. Oral supplementation with L-thyroxine (L-T4) may be considered in such cases. The empiric daily dose is usually 0.1 mg/cat and no published pharmacokinetic data on L-T4 in cats are available. The present study evaluated the pharmacokinetics of oral L-T4 in healthy cats.