Two new papers showing T4+T3 combination therapy may be be more effective than T4 monotherapy. Links to one full paper and one abstract at the end of the article.
Summary:
New insights into hypothyroidism – a condition affecting about 10 million people in the U.S. – have been found by researchers that may lead to new treatment protocols for the disease, particularly among the approximately 15 percent of patients for whom standard treatments are less effective.