Silver Book Fact
In 1995, an NIH-funded clinical trial established the first FDA-approved treatment for acute ischemic stroke treatment.The drug tPA, if given within 3 hours of stroke symptoms, reduces the risk of more hemorrhaging, and maximizes the potential for patient recovery.
NIH Fact Sheet: Stroke. https://report.nih.gov/nihfactsheets/ViewFactSheet.aspx?csid=117