2 doctors weighed in:
Anyone been on cytomel (liothyronine) for hypothyroid for a length of time and ok?
2 doctors weighed in

Dr. Kathleen Hands
Internal Medicine - Endocrinology
1 doctor agrees
In brief: No
Your thyroid makes 90%t4, and a minimal amount of t3.
Cytomel (liothyronine) is T3 and is a rapid form of thyroid medicine. It clears your system in a few hours. T4 has a half life of 7d just like your thyroid hormone. Best thyroid replacement is t4. T3 is supplemented if liver conversion is poor or you lack deiodinase. You will not feel well on T3 replacement since you are always running out. T4 is long acting.

In brief: No
Your thyroid makes 90%t4, and a minimal amount of t3.
Cytomel (liothyronine) is T3 and is a rapid form of thyroid medicine. It clears your system in a few hours. T4 has a half life of 7d just like your thyroid hormone. Best thyroid replacement is t4. T3 is supplemented if liver conversion is poor or you lack deiodinase. You will not feel well on T3 replacement since you are always running out. T4 is long acting.
Dr. Kathleen Hands
Dr. Kathleen Hands
Thank
Get help from a real doctor now
Dr. Andrea Brand
Board Certified,
6M people helped
Continue
108,000 doctors available
Read more answers from doctors