Shutterstock | He says that the best supplements to take during the pandemic to boost immunity are vitamin C and vitamin DGarner went live with the physician on her Instagram to talk about health and immunity, during which he revealed that his favorite vitamins to take are C and D, both of which he recommends to people who want to strengthen their immune system against infections.

As expected, he faced some serious backlash from the critics who claimed that Fauci knew something about the ongoing pandemic that he wasn't letting on to the public.

But the physician fired back with a statement that he never claimed that vitamins were a surefire way to prevent viral infections. Instead, he was simply answering Garner's question about which supplements he takes and their benefits for the immune system.