Heparin and Tenecteplase interaction
Heparin and Tenecteplase: the Tenecteplase prescribing label describes an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Tenecteplase (TNKase) label · effective 2025-12-15
Should serious bleeding that is not controlled by local pressure occur, discontinue any concomitant heparin or antiplatelet agents immediately and treat appropriately.
Because heparin, aspirin, or TNKase may cause bleeding complications, carefully monitor for bleeding, especially at arterial puncture sites.
…hemorrhagic ophthalmic conditions Septic thrombophlebitis or occluded AV cannula at seriously infected site Advanced age [see Use in Specific Populations (8.5) ] Patients currently receiving anticoagulants (e.g., warfarin sodium) Any other condition in which bleeding constitutes a significant hazard or would be particularly difficult to manage because of its location.
Aspirin and heparin have been administered concomitantly with and following administration of TNKase in the management of acute myocardial infarction, but the concomitant administration of heparin and aspirin with and following administration of TNKase for the treatment of acute ischemic stroke during the first 24 hours after symptom onset has not been investigated.
Hemorrhage can occur 1 or more days after administration of TNKase, while patients are still receiving anticoagulant therapy.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.