NP Thyroid (thyroid tablets, USP) for oral use is a natural preparation derived from porcine thyroid glands. They contain both tetra iodothyronine sodium (T4 levothyroxine) and triiodothyronine sodium (T3 liothyronine) providing 38 mcg levothyroxine (T4) and 9 mcg liothyronine (T3) per grain of thyroid (or per 60 mg of the labeled amount of thyroid).

NP Thyroid tablets may be prescribed for the following:

• As replacement or supplemental therapy in patients with hypothyroidism
• As pituitary TSH suppressants, in the treatment or prevention of various types of euthyroid goiters.
• As diagnostic agents in suppression tests to differentiate suspected mild hyperthyroidism or thyroid gland autonomy.

The inactive ingredients are calcium stearate, dextrose (agglomerated) and mineral oil.