The Oklahoma Bureau of Narcotics and Dangerous Drugs (OBNDD) has provided drug drop off boxes at most sheriff's office and police stations. Here are a few links to find the closest drop off box to you.
OBNDD link to website lookup tool: https://portal.obn.ok.gov/takeback/default.aspx
The DEA recently began allowing some pharmacies to get licensed to have drop off boxes in their business. Here is a link to be able to search for any possible pharmacies in your area that provide this service: https://apps2.deadiversion.usdoj.gov/pubdispsearch/spring/main?execution=e1s1
Dispose My Meds is an online tool that helps find medication disposal programs at independent pharmacies by zip code: https://disposemymeds.org