Nineteen teams pitched ideas Sunday to help combat the country’s rising opioid epidemic during a hack-a-thon. After the competition, five teams walked away with $1,000 each to turn their conceptual innovations into reality — and the potential to win an even larger award later.

The winners were announced Tuesday:

■ RxReturn won the Innovation Award for a notification system that reminds patients via text messages to dispose of expired medications.

■ Team Ally won the Anti-Stigma Award for a social ­innovation that allows ­community responders to make naloxone quickly available when and where it is needed.

■ ReadyACCESSviaSMS won the Solution Award for an anonymous text-messaging system that increases access to life-saving resources and information.

■ MATmobile won the Treatment On-Demand Award for a treatment van that would visit areas known for drug use and offer help to those who are struggling.

■ The 3rd Place won the Community Building Award for creating a safe and welcoming meeting and activity space that would act as a “hub’’ for those in recovery.

The three-day hack-a-thon, hosted by the GE Foundation and Massachusetts General Hospital, also ­featured policy discussions with state and federal ­officials, as well as with those whose lives have been ravaged by opioids.

The GE Foundation will award $10,000 to the team that makes the most progress in the next three months.

Akilah Johnson can be reached at akilah.johnson@globe.com. Follow her on Twitter @akjohnson1922.