The National Institute of Health, a government agency (not funded by pharmaceutical grants) conducted a clinical trial to see if desiccated thyroid therapy is advantageous to T4 alone (8) The authors of the study concluded: «DTE (
Desiccated Thyroid Extract) therapy did not result in a significant improvement in quality of life; however, DTE caused modest weight loss and nearly half (48.6 %) of the study patients expressed preference for DTE over l - T4 (Levothyroxine).