This open paper is useful in that it indicates how T4 therapy can be interefered with by various substances in the body or drugs:
MINI REVIEW ARTICLE
Front. Endocrinol., 22 December 2020 | doi.org/10.3389/fendo.2020....
L-T4 Therapy in the Presence of Pharmacological Interferents
Salvatore Benvenga
Thank you for another interesting post. I took note of the followingL
"Thus, L-T4 is one top prescribed medication (9). However, ≈20% of patients with PH (10–13) and ≈20% (14) or 40% (15) of patients with CH are undertreated, co-administration of interfering medications (IM) being one major cause. Of 2,292 patients with PH (12), 42.7% had abnormal serum TSH (28.3% undertreated and 14.4% overtreated). Strikingly, only 52.1% of patients were told not to take L-T4 along with IM (12).
As mentioned below, there may be consequences on health from undertreated hypothyroidism (UTH).
