Levothyroxine, sold under brand names like Unithroid & Synthroid, treats this gland when it's underactive
[DOC] [TLE] Best Kept Secret - Weston A Price [PAR] Jun 19, 2009 ... A Successful Approach to Underactive Thyroid Hormone Function ... which, as its 
name implies, stimulates the thyroid gland to produce more T4 and T3 hormones.