My daughter took Hydroxycut in spite of the warning (she is 20 with only 10% of her thyroid).

Her TSH shot up from 3.0 to 40.77 and her Free T3 dropped down to 2.1 (low lab range of 2.3)....she also gained 20 lbs even though she worked at a fitness center and was doing A HARD 2 1/2 HR WORKOUT, 7 DAYS A WEEK!

If thyroid is a condition listed, don't take it! somehow, it interfers with thyroid hormone.

Try supplementing with Selenium (no more than 300 mcg as it can be toxic at high levels) This mineral comes from our food and much of our soils are deficient. This mineral is necessary to convert T4 to T3