New Questions Regarding Bioequivalence of Levothyroxine Preparations: A Clinician's Response
- Discusses generic T4 medications and the differences among preparations. From the AAPS Journal.
- http://www.aapsj.org/articles/aapsj0701/aapsj070107/aapsj070107.pdf

Calcium Supplements May Interfere With Thyroid Treatment
- News article warning that high calcium levels may result in lower thyroid hormone levels for women taking supplements.
- http://my.webmd.com/content/article/25/1728_58215

Ciprofloxacin interacts with thyroid replacement therapy
- Article covers two cases of unexplained hypothyroidism in patients taking ciprofloxacin.
- http://bmj.bmjjournals.com/cgi/content/full/330/7498/1002

Comparison of Two Drug Regimens for Hypothyroidism
- Further studies support no additional benefit with a combination of L-thyroxine and liothyronine over treatment with L-thyroxine alone.
- http://www.annals.org/cgi/content/summary/142/6/412

NEJM - Effects of Thyroxine as Compared with Thyroxine plus Triiodothyronine in Patients with Hypothyroidism
- Older study on added T3, its possible role in improving mood, and neuropsychological function.
- http://content.nejm.org/cgi/content/short/340/6/424

Thyroid Experts Warn of Clinically Important Differences in Potency of FDA-Approved Levothyroxine Products
- Generic bioequivalence data confirms medical societies’ concern about recently approved generic levothyroxine preparations.
- http://www.thyroid.org/professionals/publications/news/04_08_11_fda_levothyroxine.html

Journal of Clinical Endocrinology & Metabolism
- Study reports that combined Thyroxine/Liothyronine treatment does not improve well-being, quality of life, or cognitive function compared to Thyroxine alone.
- http://jcem.endojournals.org/cgi/content/abstract/88/10/4543

Thyroid Hormone
- Prescribing information about desiccated thyroid as a hormonal supplement for hypothyroidism. By RxMed.
- http://www.rxmed.com/b.main/b2.pharmaceutical/b2.1.monographs/CPS-%20Monographs/CPS-%20(General%20Monographs-%20T)/THYROID%20HORMONE.html

Propyl-Thyracil
- Used in the medical management of hyperthyroidism. Lists prescribing information.
- http://www.rxmed.com/b.main/b2.pharmaceutical/b2.1.monographs/CPS-%20Monographs/CPS-%20(General%20Monographs-%20P)/PROPYL.html

Thyroid Hormone Replacement
- Instructions for patients of the Pituitary Center at Vanderbilt University Medical Center, of interest to anyone taking levothyroxine.
- http://www.pituitarycenter.com/html/article5.html