[23] The initial recommended dosage of PTU is treatment every 8 hours ... until antithyroid drugs achieve control over the hyperthyroidism. Dr. Mestman is Professor in the Departments of Medicine ...

The risk is lower in people with hyperthyroidism than in people with hypothyroidism (underactive thyroid). MMI and PTU can cross the placenta and reach the fetus. In rare cases, they’ve been ...