Initial drug to sta with newly detected hypeension in an 42 years old male with calcium stones is:-

Chlohalidone is a thiazide like diuretic which is a one of the first line drugs for hypeension. It is preferred since it decreases calcium excretion and Ca2+ do not deposits in kidney so prevent the formation of calcium stones. Furosemide (Loop diuretic)- Increases Ca2+ excretion and can precipitate the condition of pt.