British researchers say if you've got a persistent cough, try reaching for chocolate.
They studied more than 160 patients, randomly prescribing either codeine cough syrup or a chocolate-based medicine called ROCOCO.
What they found is a significant improvement of symptoms in two days in patients taking the chocolately medicine, compared to cough syrup.
They think it's because chocolate is stickier, forming a protective coating on the throat.
So, now those researchers are recommending sucking on a piece of chocolate if you've got a nagging cough.