Why is it taking so long to do a big study on this? There are so many sick people and it’s a cheap drug and only takes a week Or 2 to see if it works. Can som

Why is it taking so long to do a big study on this? There are so many sick people and it’s a cheap drug and only takes a week Or 2 to see if it works. Can someone please just do a Really large trial, like, 2 weeks ago so we can put this to bed one way or the other.