 If you don't know what Opil is, it's considered the little pill also known as pop. It's a progestin only version of birth control. Now, this has been made possible because of the FDA's deregulation of hormonal birth control. You may have heard over the last number of months, you can buy birth control anywhere from Walgreens and CVS. And yes, you could pick it up there from the pharmacy before, but now it's over the counter.