The Daily Star's FREE newsletter is spectacular! Sign up today for the best stories straight to your inboxA cancer drug developed to kill tumours could also cure patients hit by Covid-19, researchers say .Pralatrexate, which is sold under the brand name Folotyn, has been found in lab tests to outperform the current anti-viral drug given to seriously ill patients, remdesivir.Scientists are now hoping to turn it into a nasal spray for coronavirus patients if side effects of vomiting and fatigue can be solved.Study lead author Dr Haiping Zhang, of the Shenzhen Institutes of Advanced Technology, said: "Our study discovered it is able to potently inhibit SARS-CoV-2 replication."It was stronger than remdesivir within the same experimental.