CTD-O 12.5/20 Tablet is a mix of Chlorthalidone and Olmesartan. It is utilized in the treatment of hypertension (hypertension). This medication works by loosening up the veins and furthermore expanding the water and sodium discharge from the body. In this manner it advances the smooth progression of blood and furthermore permits your heart to proficiently siphon blood more. CTD-O 12.5/20 Tablet has a few incidental effects like hack, queasiness, migraine, looseness of the bowels, discombobulation, and irritated stomach. This medication might make you pee all the more frequently as it works by eliminating additional water from your body. Drink a lot of liquids while taking this medication to forestall getting got dried out. On the off chance that any of these incidental effects don't determine with time or deteriorate, counsel your primary care physician right away. Try not to take this medication on the off chance that you are oversensitive to it.