Opill, the first oral contraceptive approved for over-the-counter use in the United States, will be available in stores and online this month, with a manufacturer’s suggested retail price of $19.99 for a one-month supply and $49.99 for a three-month supply, according to Perrigo, the company behind the product. Perrigo announced Monday that Opill has shipped to major retailers and pharmacies and will be available to pre-order from select retailers beginning this week. Once the product hits shelves, anyone can buy it without a prescription. It will also be available at Opill.com. Opill works as a “mini-pill,” using only the hormone...