There are some medicines that use external containers to measure the dose that users should take. These containers must be cleaned each time they are used so as not to contaminate future users.
Rethinking this interaction with the containers, we devised a lid that contains a piston with internal chambers where the base dose per user is stored each time a load is served. This simplifies the process by having a load ready instantly as it is stored on previous use. A single lid with internal containers is also created eliminating the need for an external cup that must be cleaned with each use.