Where to safely drop off your unwanted medicine in San Mateo County
Use the search function below to find convenient locations with secure disposal drop-off locations or where you can obtain mail-back supplies. Call (844) 4-TAKE-BACK or (844) 482-5322 for more information or to order mail-back supplies.
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ⓘMore information about Drop-off location
Drop-off locations are pharmacies, police stations, and other facilities where you can bring your unused or expired medications for safe disposal at no cost.
ⓘMore information about Mail-back supply location
Mail-back supply locations provide free prepaid envelopes that let you mail your unused medications to a disposal facility from the comfort of your home.
While the listing of participating drop-off and mail-back supply locations is regularly updated, you should confirm, prior to visiting a location, that it will be open when you intend to visit and will be able to accept your medications or provide you with mail-back supplies.
Take-Back Events
Local take-back events offer residents a safe, free, and convenient way to dispose of expired or unwanted household medication. The local authorities and MED-Project or Inmar Intelligence may also sponsor local drug take-back events in your area. To protect your privacy, patients are reminded to remove all personally identifiable information on medication labels or packaging before disposing of unwanted medicine.
There are no upcoming take-back events at this time. Please check back later.
Monday, June 29, 2026
Redwood City Police Substation at Sequoia Station
Start time: 11:00 AM
End time: 3:00 PM
1035 El Camino Real,
Redwood City, CA 94063
Redwood City, CA 94063
Tuesday, June 30, 2026
The Half Moon Bay Police (San Mateo County Sheriff’s Substation)
Start time: 1:00 PM
End time: 5:00 PM
537 Kelly Avenue,
Half Moon Bay, CA 94019
Half Moon Bay, CA 94019
Monday, July 6, 2026
Millbrae Library - Parking lot
Start time: 10:00 AM
End time: 2:00 PM
1 Library Ave, Millbrae,
CA 94030.
Features a dedicated, free parking lot for visitors.
CA 94030.
Features a dedicated, free parking lot for visitors.
Order Mail-Back Supplies/Get More Information
Click on the button to request a mail-back package.
Mail-Back options include:
- ● Unwanted medication mail-back envelope
- ● Inhaler mail-back package
- ● Injector mail-back package