Question: 1 grain of armour thyroid is how many mg?
Answer: ARMOUR THYROID Rx. Thyroid 15mg (¼ grain), 30mg (½ grain), 60mg (1 grain), 90mg (1 + ½ grain), 120mg (2 grains), 180mg (3 grains)+, 240mg (4 grains), 300mg (5 grains)+; tabs; +scored. Each grain of thyroid contains liothyronine (T3) 9mcg and levothyroxine (T4) 38mcg.