Diuretic which can be given in mild to moderate hypeension is

Thiazides are safe, reduce clinical events. Provide additive blood pressure lowering effects wheb combined with beta blockers, Ace inhibitors or arb's. Potassium sparing diuretics are weak anti hypeensive agents Loop diuretics are reserved for hypeensive patients with reduced GFR or edema or Na retention. Ref:Harrison 20th edition pg no 1901