system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
In the treatment of hypothyroidism, thyroxine is preferred over liothyronine because of thyroxine:
assistant
The correct answer is  Liothyronine (T3) as compared to thyroxine (T4) is:

Fast acting
More potent
Short half-life

An indication of liothyronine includes myxedema coma and for most of the indications, thyroxine is used because it has a long half-life thus can be used less frequently than T3.