Final answer:
The drug is most likely a diuretic used to treat hypertension. Diuretics work by inhibiting the reabsorption of Na+ and Cl- ions in the kidney, leading to increased urine production.
Step-by-step explanation:
The drug is most likely a diuretic used to treat hypertension. Diuretics work by inhibiting the reabsorption of Na+ and Cl- ions in the kidney, leading to increased urine production. Loop diuretics, such as furosemide, act on the loop of Henle and are known to have this side effect of increasing urination.
For example, furosemide inhibits the reabsorption of Na+ and Cl- in the ascending limb of the loop of Henle, preventing their reabsorption into the bloodstream and promoting their excretion in the urine. This increased excretion of ions results in increased urine production.
Therefore, the drug's mechanism of action is likely increasing urine production, leading to the side effect of increased frequency of urination.