A member asked:

Is it normal to experience weird blood sugar spikes while taking cytomel (liothyronine)?

2 doctors weighed in across 2 answers
Dr. Cayce Jehaimi answered

Specializes in Pediatric Endocrinology

No: I hardly remember a single case where thyroxine (or Cytomel (liothyronine) for that matter) is having any impact on blood sugar levels. If the reason in taking Cytomel (liothyronine) is autoimmune thyroiditis, then theoretically there is a risk of developing auto inflammation in the pancreas (about 10-15% of type i diabetics will develop autoimmune thyroiditis). Please discuss this with your endocrinologist.

Answered 6/24/2014


Dr. Donald Colantino answered

Specializes in Internal Medicine

Possibly: If the dose of cytomel or any thyroid supplement is excessive or if it's absorption is erratic, blood sugar variations can occur with upward spikes with too high doses. Diabetics would be more sensitive to cytomel's effect on blood sugar.

Answered 12/27/2018



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