An indexable dispenser extracts single-serving doses from a multi-serving supplements cartridge for delivery as a drinkable solution. The indexable dispenser includes a lance that punctures one serving chamber at a time so that its granulated contents can be drained into a mixing cup. The lance is attached to a rotatable flap, along with a spur. The spur punctures a membrane covering a marker zone when the flap is closed to enable machine readability. The granulated supplements are mixed with water before consumption. The indexable dispenser is configured with a dispensing window to reveal only one serving chamber at a time. The supplements cartridge is manually positioned so that an unopened serving chamber is presented in the dispensing window each time for extracting its supplements. The mixing cup may be collapsible, and together with a cap, stored in a cavity of the supplements cartridge for travel.