A little more about trimetazidine:
"Dr Sadiya Khan, a cardiologist and assistant professor at Northwestern University Feinberg School of Medicine, told Reuters news agency that in theory trimetazidine might be used in a healthy person to enhance blood flow above and beyond normal levels.
“The idea behind it would be, potentially, if you enhance blood flow, you could improve somebody’s ability to exercise longer or exercise more efficiently by allowing the heart to respond super-normally,” she said.
But she said it is not clear if the drug offers any performance-enhancing benefit.
“There’s a theoretical benefit,” she said. “There’s no strong evidence that it does make a difference.”