I was over medicated on levothyroxine, so i'm on half the dose. i lost 15lbs in weight, its been 5 weeks and i have not gained any weight back.??

Thyroid and wt loss: Thyroid harmones helps with metabolism. Low functioning thyroid can slow the metabolism Nd decrease weight and high dose of levothyroxine may have increased your thyroid function so you lost weight . It has been 5 weeks since you are on half the dose , get your TSH levels checked so you can be on proper dose needed for you. Are you actually trying to gain weight ?

Recheck your tests: i assume the TSH was very low (suppressed) when the diagnosis of overmedication was made. It may take a while for you to regain the weight if your thyroid hormone level is normal now. But you need to follow up the blood tests to see if the dose you are taking now is appropriate. check your T4 and TSH again, and don't worry about the weight unless it is your desire to regain the pounds.