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No data are available with regard to overdosage with JALYN. The following text reflects information available for the individual components.
In volunteer trials, single doses of dutasteride up to 40 mg (80 times the therapeutic dose) for 7 days have been administered without significant safety concerns. In a clinical trial, daily doses of 5 mg (10 times the therapeutic dose) were administered to 60 subjects for 6 months with no additional adverse effects to those seen at therapeutic doses of 0.5 mg.
There is no specific antidote for dutasteride. Therefore, in cases of suspected overdosage symptomatic and supportive treatment should be given as appropriate, taking the long half-life of dutasteride into consideration.
Should overdosage of tamsulosin lead to hypotension [see WARNINGS AND PRECAUTIONS, ADVERSE REACTIONS], support of the cardiovascular system is of first importance. Restoration of blood pressure and normalization of heart rate may be accomplished by keeping the patient in the supine position. If this measure is inadequate, then administration of intravenous fluids should be considered. If necessary, vasopressors should then be used and renal function should be monitored and supported as needed. Laboratory data indicate that tamsulosin is 94% to 99% protein bound; therefore, dialysis is unlikely to be of benefit.
JALYN is contraindicated for use in:
- Pregnancy. In animal reproduction and developmental toxicity studies, dutasteride inhibited development of male fetus external genitalia. Therefore, JALYN may cause fetal harm when administered to a pregnant woman. If JALYN is used during pregnancy, or if the patient becomes pregnant while taking JALYN, the patient should be apprised of the potential hazard to the fetus [see WARNINGS AND PRECAUTIONS, Use in Specific Populations].
- Women of childbearing potential [see WARNINGS AND PRECAUTIONS, Use In Specific Populations].
- Pediatric patients [see Use In Specific Populations].
- Patients with previously demonstrated, clinically significant hypersensitivity (e.g., serious skin reactions, angioedema, urticaria, pruritus, respiratory symptoms) to dutasteride, other 5 alpha-reductase inhibitors, tamsulosin, or any other component of JALYN [see ADVERSE REACTIONS].
Last reviewed on RxList: 5/13/2013
This monograph has been modified to include the generic and brand name in many instances.
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