A team of researchers in Hong Kong has created what they call the world's first nasal spray designed to treat strokes within minutes. The spray delivers medication directly through the nose, bypassing the bloodstream and reaching the brain faster than traditional methods.
A spray that buys time when every second counts
Strokes happen when blood flow to the brain is blocked or when a blood vessel bursts. Every minute without treatment can kill brain cells. The new nasal spray, developed by scientists at the University of Hong Kong, aims to give patients and doctors a critical head start. It contains a drug that helps dissolve clots and restore blood flow.
How it works and who tested it
The spray is meant to be used as an emergency first response, even before a patient reaches the hospital. In lab tests on animals, the treatment showed it could reduce brain damage when given quickly after a stroke. The researchers say the nasal route allows the medicine to travel along the olfactory nerve, a direct path from the nose to the brain. This avoids the delays caused by digestion or injection.
Why this matters for people in Hong Kong and beyond
Stroke is a leading cause of death and long term disability worldwide. In Hong Kong, thousands of people suffer strokes each year, and many do not get treatment in time. Local doctors and patients have long hoped for a faster, easier way to deliver care. The nasal spray could be used by paramedics, at home, or in remote areas where hospital access is limited.
The research team is now working toward human clinical trials. If those succeed, the spray could become a standard part of emergency kits. For now, it remains a promising prototype that has already drawn attention from medical experts around the world.
