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Mykrox

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Mykrox

Overdosage
Contraindications

OVERDOSE

Intentional overdosage has been reported rarely with metolazone and similar diuretic drugs.

Signs and Symptoms

Orthostatic hypotension, dizziness, drowsiness, syncope, electrolyte abnormalities, hemoconcentration and hemodynamic changes due to plasma volume depletion may occur. In some instances depressed respiration may be observed. At high doses, lethargy of varying degree may progress to coma within a few hours. The mechanism of CNS depression with thiazide overdosage is unknown. Also, GI irritation and hypermotility may occur. Temporary elevation of BUN has been reported, especially in patients with impairment of renal function. Serum electrolyte changes and cardiovascular and renal function should be closely monitored.

Treatment

There is no specific antidote available but immediate evacuation of stomach contents is advised. Dialysis is not likely to be effective. Care should be taken when evacuating the gastric contents to prevent aspiration, especially in the stuporous or comatose patient. Supportive measures should be initiated as required to maintain hydration, electrolyte balance, respiration, and cardiovascular and renal function.

CONTRAINDICATIONS

Anuria, hepatic coma or precoma, known allergy or hypersensitivity to metolazone.

Last reviewed on RxList: 5/4/2009
This monograph has been modified to include the generic and brand name in many instances.

Overdosage
Contraindications
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