Associated w/ biochemical abnormalities of liver function. Perform LFTs prior to & at 12 wk following initiation of therapy & periodically thereafter (eg, semiannually). May occasionally be associated w/ myopathy. Temporarily w/hold or discontinue use in any patient w/ acute, serious condition suggestive of myopathy or risk factors predisposing to development of renal failure secondary to rhabdomyolysis (eg, severe acute infection, hypotension, major surgery, trauma, severe metabolic, endocrine & electrolyte disorders, & uncontrolled seizures). Concomitant use of drugs that may decrease levels or activity of endogenous steroid hormones eg, ketoconazole, spironolactone, & cimetidine. Not recommended in childn & adolescents <18 yr. Fenofibrate: Very rare reports of acute hypersensitivity reactions. May increase cholesterol excretion into the bile, leading to cholelithiasis. Discontinue use if gallstones are found. Reports of pancreatitis. Mild to moderate Hb, hematocrit, & WBC decreases have been observed following initiation of therapy. Perform periodic blood counts during 1st 12 mth of administration.