1359
CASE SUMMARY: A 66-year-old white woman with a 10-year history of hypertension and bronchial asthma was switched from immediate-release verapamil hydrocloride 40 mg tid to sustained-release verapamil 240 mg/d po for better hypertension control.
 potential therapeutic event: control.
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 potential therapeutic event: control.