Ipca Laboratories, for instance, was supposed to deliver 5 lakh blisters of hydroxychloroquine (HCQS) tablets to the Central government by last Tuesday, but it had delivered the tablets after two days by air due to delay in permission from the government to airlift the product from its Siliguri facility.Though the company is sitting on raw material that can produce 100 million tablets, the lockdown is making production of the drug difficult.