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The most frequent clinical adverse reactions considered probably or possibly related to Bumex (bumetanide) are muscle cramps (seen in 1.1% of treated patients), dizziness (1.1%), hypotension (0.8%), headache (0.6%), nausea (0.6%) and encephalopathy (in patients with preexisting liver disease) (0.6%). One or more of these adverse reactions have been reported in approximately 4.1% of patients treated with Bumex (bumetanide) .
Serious skin reactions (i.e., Stevens-Johnson syndrome, toxic epidermal necrolysis) have been reported in association with bumetanide use.
Less frequent clinical adverse reactions to Bumex (bumetanide) are impaired hearing (0.5%), pruritus (0.4%), electrocardiogram changes (0.4%), weakness (0.2%), hives (0.2%), abdominal pain (0.2%), arthritic pain (0.2%), musculoskeletal pain (0.2%), rash (0.2%) and vomiting (0.2%). One or more of these adverse reactions have been reported in approximately 2.9% of patients treated with Bumex (bumetanide) .
Other clinical adverse reactions, which have each occurred in approximately 0.1% of patients, are vertigo, chest pain, ear discomfort, fatigue, dehydration, sweating, hyperventilation, dry mouth, upset stomach, renal failure, asterixis, itching, nipple tenderness, diarrhea, premature ejaculation and difficulty maintaining an erection.
Laboratory abnormalities reported have included hyperuricemia (in 18.4% of patients tested), hypochloremia (14.9%), hypokalemia (14.7%), azotemia (10.6%), hyponatremia (9.2%), increased serum creatinine (7.4%), hyperglycemia (6.6%), and variations in phosphorus (4.5%), CO content (4.3%), bicarbonate (3.1%) and calcium (2.4%). Although manifestations of the pharmacologic action of Bumex (bumetanide) , these conditions may become more pronounced by intensive therapy.
Also reported have been thrombocytopenia (0.2%) and deviations in hemoglobin (0.8%), prothrombin time (0.8%), hematocrit (0.6%), WBC (0.3%) and differential counts (0.1%). There have been rare spontaneous reports of thrombocytopenia from postmarketing experience.
Diuresis induced by Bumex (bumetanide) may also rarely be accompanied by changes in LDH (1.0%), total serum bilirubin (0.8%), serum proteins (0.7%), SGOT (0.6%), SGPT (0.5%), alkaline phosphatase (0.4%), cholesterol (0.4%) and creatinine clearance (0.3%). Increases in urinary glucose (0.7%) and urinary protein (0.3%) have also been seen.
Read the Bumex (bumetanide) Side Effects Center for a complete guide to possible side effects
Drugs With Ototoxic Potential (see WARNINGS)
Especially in the presence of impaired renal function, the use of parenterally administered bumetanide in patients to whom aminoglycoside antibiotics are also being given should be avoided, except in life-threatening conditions.
Drugs With Nephrotoxic Potential There has been no experience with the concurrent use of Bumex (bumetanide) with drugs known to have a nephrotoxic potential. Therefore, the simultaneous administration of these drugs should be avoided.
Lithium should generally not be given with diuretics (such as Bumex (bumetanide) ) because they reduce its renal clearance and add a high risk of lithium toxicity.
Pretreatment with probenecid reduces both the natriuresis and hyperreninemia produced by Bumex (bumetanide) . This antagonistic effect of probenecid on Bumex (bumetanide) natriuresis is not due to a direct action on sodium excretion but is probably secondary to its inhibitory effect on renal tubular secretion of bumetanide. Thus, probenecid should not be administered concurrently with Bumex (bumetanide) .
Indomethacin blunts the increases in urine volume and sodium excretion seen during Bumex treatment and inhibits the bumetanide-induced increase in plasma renin activity. Concurrent therapy with Bumex (bumetanide) is thus not recommended.
Bumex (bumetanide) may potentiate the effect of various antihypertensive drugs, necessitating a reduction in the dosage of these drugs.
Interaction studies in humans have shown no effect on digoxin blood levels.
Interaction studies in humans have shown Bumex (bumetanide) to have no effect on warfarin metabolism or on plasma prothrombin activity.
Read the Bumex Drug Interactions Center for a complete guide to possible interactions
Last reviewed on RxList: 2/16/2010
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