What Drugs Can You Flush?
In our latest question and answer, our pharmacist discusses what medications are recommended to be flushed down the toilet.
Question
Hi, I have some medication that is old that I need to get rid of. I think I heard at one point that you shouldn't throw medications down the toilet. Is this right? Are there some you can flush?
Answered by Dr. Brian Staiger, PharmD
Medical Content Reviewed By HelloPharmacist
Staff
Last updated Jan 23, 2025
Key points
- Most drugs should not be flushed down the toilet. Only certain medications that pose a safety risk are recommended by the FDA to be flushed if other disposal options aren't available.
- A drug take-back or public disposal site is the preferred option for drug disposal. If that is not an option for you, and your drug is not on the 'flush list', you should mix it with something undesirable, like kitty litter, and throw it away in the trash.
Answer
Thanks for reaching out to us! You are right, most drugs should not be flushed down the toilet due to concerns of water contamination. However, there are some drugs that are exempt from this and have been deemed okay to flush based on their inherent safety risk.
"Flush List"
As mentioned, the FDA publishes a 'flush list' of drugs, which are mostly controlled substances, where it has been determined that the potential risk of harm due to misuse or diversion outweighs any environmental risk
Now, if possible, it is still recommended to a drug disposal site for the drugs on the 'flush list' if one is available, but, If there is not a timely take-back program that accepts medicines containing controlled substances, the most effective way to immediately and completely eliminate the potential for harm is to remove these medicines from the home by flushing them down the sink or the toilet.
The below list shows the medications and their dosage forms the FDA recommends flushing if these products cannot be stored safely and securely before disposal.
Medication | Dosage form(s) |
Acetaminophen/benzhydrocodone | Tablets |
Buprenorphine | Transdermal patch system |
Buprenorphine hydrochloride | Tablets (sublingual), soluble film (buccal) |
Buprenorphine hydrochloride/naloxone hydrochloride | Tablets (sublingual), film (sublingual) |
Fentanyl | Tablets (sublingual), patch (extended-release) |
Fentanyl citrate | Tablets (buccal), soluble film (buccal), oral transmucosal lozenge |
Hydrocodone bitartrate | Tablets (extended-release), capsules (extended-release) |
Hydromorphone hydrochloride | Tablets, tablets (extended-release), oral liquid |
Meperidine hydrochloride | Tablets, oral solution |
Methadone hydrochloride | Tablets, oral solution |
Methylphenidate | Patch |
Morphine sulfate | Tablets (immediate-release), tablets (extended-release), capsules (extended-release), oral solution |
Morphine sulfate/naltrexone hydrochloride | Capsules (extended-release) |
Oxycodone hydrochloride | Tablets (immediate-release), tablets (extended-release), capsules, oral solution |
Oxycodone hydrochloride/acetaminophen | Tablets (extended-release), tablets |
Oxycodone hydrochloride/aspirin | Tablets |
Oxycodone hydrochloride/naloxone hydrochloride | Tablets (extended-release) |
Oxycodone hydrochloride/naltrexone hydrochloride | Capsules (extended-release) |
Oxymorphone hydrochloride | Tablets (immediate-release), tablets (extended-release) |
Sodium oxybate | Oral solution |
Tapentadol | Tablets (extended-release) |
Drug Disposal Info
Even if you have a drug on the list above, flushing should be used as a last resort. Other options are recommended if possible, such as finding a take-back program, public disposal site, etc...
If a take-back program isn't available, and your drug is not on the 'flush' list above, most medications can be thrown in the trash.
If you do decide to throw your unused drugs in the trash, be sure to mix them with something undesirable, like used coffee grounds, dirt, or kitty litter. This will make the drugs less appealing to children, animals, and anyone that may be going through the trash. Also, be sure to put the mixture in a bag or other container that you can seal to prevent leakage.
Final Words
Thanks again for reaching out to us!
- Dr. Brian Staiger, PharmD
- 1736 views