evidence: 'Safety and efficacy are important when using any drug for a new indication. @WHO recommends against the use of ivermectin for Covid-19 except within clinical trials,' Soumya Swaminathan, the global health body's chief scientist, said in a tweet. [...] The WHO had, in March, issued a similar warning against the use of ivermectin in treating Covid patients. [...] The US Food and Drug Administration (FDA) had also, in April last year, recommended against the use of ivermectin in treating Covid patients. Besides, the Union ministry of health and family welfare had also reportedly opted out from including Ivermectin in its official Clinical Management Protocol for Covid-19 last year.