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Although there is no well documented experience with DynaCirc® (isradipine) overdosage,available data suggest that, as with other dihydropyridines, gross overdosage would result in excessive peripheral vasodilation with subsequent marked and probably prolonged systemic hypotension. Clinically significant hypotension overdosage calls for active cardiovascular support including monitoring of cardiac and respiratory function, elevation of lower extremities and attention to circulating fluid volume and urine output. A vasoconstrictor (such as epinephrine, norepinephrine, or levarterenol) may be helpful in restoring vascular tone and blood pressure,provided that there is no contraindication to its use.Since isradipine is highly protein bound, dialysis is not likely to be of benefit.
Significant lethality was observed in mice given oral doses of over 200 mg/kg and rabbits given about 50 mg/kg of isradipine. Rats tolerated doses of over 2000 mg/kg without effects on survival.
DynaCirc CR® (isradipine) is contraindicated in individuals who have shown hypersensitivity to any of the ingredients in the formulation.This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 12/30/2008
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