California, Santa Barbara: Direct Relief International. They can’t take medical products from individuals because of California Pharmacy law.

Massachusetts, Brockton: American Medical Resources Foundation, Inc.
They send stuff off to developing countries.

Multiple Locations: Operation Giving Back Many opportunities for donating equipment and supplies to be handed off to developing nations.

Don’t forget to check with these organizations before you send them anything, to make sure whatever you have is something they can actually use.

If you can’t pass on your prescription drugs to someone who can use them, don’t just flush them down the toilet (or the sink). Pharmaceuticals have been detected in the water supplies of about 41 million Americans. It’s unclear what the long-term effects of this might be, since they are in extremely small quantities, but it’s better to save ‘em up for one of the DEA’s National Take Back days or just bring them to your local hazardous waste dropoff.