Nurx began as an on-demand birth control delivery service in late 2015, but it has now expanded its repertoire to include a drug that reduces the chances of HIV infection. The National Institutes of Health proved (PDF) that the drug called Truvada can reduce the risk of contracting HIV by 99 percent years ago, but it still hasn't seen widespread adoption. Maybe it's because of people's hesitation to request for a prescription or maybe it's because of the controversy surrounding the drug. Either way, the web-based app will make it easier for people at high risk of being infected, such as those whose partners are HIV positive, to get the medication.