All you wanted to know about emergency use authorisation × ‘Emergency Use Authorisation’ has created a buzz around itself world over in the last few months as people wait eagerly for vaccines that can help fight Covid. In India, too, the drug regulator has given Emergency Use Authorisation or EUA to three anti-Covid vaccines, the latest one being Russian Sputnik V. What is it? In the current pandemic situation, it may not be possible to have all the evidence that a drug regulator would normally require for approving a drug, vaccine, device or a test. When there is a declared emergency, the regulator, in India’s case the DCGI, can take a call whether it is worth releasing a drug or vaccine that is not fully tested for efficacy and safety. If there is evidence to suggest it may benefit patients, then the regulator is well within its rights to issue an emergency use authorisation to a medical product to make it widely available for use.