Get latest articles and stories on India at LatestLY. Dr Reddy's Laboratories is hoping to go to a regulator for its single-dose Sputnik Light jab as booster dose for approvals by June-end or early July, a senior official of the city- based drug-maker said on Thursday. India News | Dr Reddy's Lab to Approach Regulator for Sputnik Light as Universal Booster Dose.