Dizziness, headache, & dose-related orthostatic hypotension. Hypotension particularly in patients w/ vol depletion (those who have received high-dose diuretics). Impaired renal function &, rarely, rash, urticaria, pruritus, angioedema, & raised liver enzyme values. Hyperkalemia, myalgia, & arthralgia. Resp tract disorders, back pain, GI disturbances, fatigue, & neutropenia. Rhabdomyolysis (rarely).