Can i take hydroxycut while i'm on levothyroxine?

No benefit: No benefit save your money no interaction with thyroid but do not take together . Thyroid can be effected my many substances including food.

Don't do that : None of the stimulant weight-loss products on the market are safe. They are known for causing cardiac arrhythmias, headaches, urinary retention, anxiety & depression, renal insufficiency, sleep disorders, and fatigue. There is no such thing as a fat burner. See your doctor for diet and exercise recommendations, and do not take any supplements unless under a doctor's management.

Not if it contains: green coffee bean extract or caffeine. Otherwise,ok to take. By the way,it will not help you lose weight.