Alto Pharmacy, a digital pharmaceutical startup based in San Francisco, has raised at least $40 million from investors in the form of a convertible note, according to people familiar with the matter.

Alto Pharmacy is changing the pharmacy experience by leveraging digital solutions to improve patient care, streamline medication access and lower costs, said Karen Martell, vice president of enterprise partnerships for Alto Pharmacy. In an interview with PYMNTS, Martell explained the company’s business model is designed to raise adherence rates by eliminating barriers associated with traditional pharmacies, whether it’s finding the time to go to a pharmacy, waiting in line, sticker shock at the cost of a medication, insurance coverage or accessing expert care. “What started as two founders hand-delivering medication to patients has evolved into a full-service, digital pharmacy that’s served more than 500,000 patients,” Martell said. “We also recently launched Alto Technologies, our enterprise services offering that empowers pharmaceutical companies, digital health providers, and others across the industry with tailored technology solutions that elevate the patient experience, improve medication access and delivery, and set new standards for convenience, cost, and care