<prompt> Replacement dose of thyroxine is0.1 - 0.2 mg0.3 - 0.4 mg1 - 2 mg3 - 4 mg  <response>: Daily replacement dose of thyroxine: 1.6 μgKg body weight 0.1-0.15 gm . For TSH suppression in PTC and FTC, dose of thyroxine: 2.7 μgKg body weight. 