You prescribe guanethidine eye drops for Sam. She thanks you for your help. 

Two weeks later, Sam starts to feel very unwell. She is sweating profusely, has a fever and her heart is racing. Her husband takes her to the Emergency Department, where thyroid storm is diagnosed. 

Sam is treated accordingly and stabilized. The attending physician establishes that Sam was only taking guanethidine for her hyperthyroidism. He advises Sam to go back to her endocrinologist to re-consider her pharmacological management. 

Please go back and re-consider.