Hi welcome to the health care magic Kindly mention your full thyroid profile report If thyroid hormone low with elevated TSH than it is hypothyroidism and levothyroxine effective in maintaining TSH value within limit If no improvement noted in follow up than dose of levothyroxine can be increased.. Basically every drug containing levothyroxine can be prescribed If no improvement with even increased dose than hypothalamic and pituitary cause ruled out by MRI like investigation if needed According to thyroid report According to TSH level dose of levothyroxine adjusted Take care Consult physician or endocrinologist for examination Hope your concern solved