The acronym "YOS" stands for "Your Organized Supplements". Joop Opmeer, a Rotterdam-based young entrepreneur, is the creator of YOS. He noticed how his own mother struggled to take her medicines on time, and occasionally, skipped them because she was on the road. As a result, Joop delved deeper into the problem and discovered that incorrect medication and supplements administration is becoming increasingly common.
The YOS water bottle with pill organiser was the first YOS product launched in 2019. This water bottle pill holder was designed to make taking medication and supplements more convenient and easier.