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How to Safely Dispose of Old Medications

The medicine cabinet in the average American home holds several expired or unused medications at any given time. Hanging onto them indefinitely creates risks that are easy to overlook: accidental ingestion by children or pets, diversion of controlled substances, and gradual environmental contamination from casual disposal. Proper medication disposal is a straightforward public health measure — here is how to do it correctly depending on what you have.

Why It Matters: Three Real Risks

Drug diversion and misuse

Leftover prescription medications — particularly opioids, benzodiazepines, stimulants, and sleep aids — are a primary source of nonmedical drug use. Studies consistently find that most people who misuse prescription drugs obtain them from friends or family, often from a medicine cabinet that the owner considers secure. A 30-tablet opioid prescription that ends after 15 tablets should not sit in an unlocked cabinet for six months. Getting those 15 tablets out of the house promptly is a meaningful harm-reduction step.

Accidental ingestion

Children under five are particularly at risk. A single adult dose of certain medications — methadone, buprenorphine, clonidine, oxycodone, calcium channel blockers — can be lethal to a small child. Medication stored in anything other than a child-resistant container in a location inaccessible to children is a hazard. Proper disposal eliminates the hazard entirely.

Environmental contamination

Medications flushed down the toilet or poured down the drain pass through wastewater treatment systems that were not designed to remove pharmaceutical compounds. Studies by the U.S. Geological Survey have detected measurable concentrations of prescription drugs — including antibiotics, hormones, antidepressants, and anticonvulsants — in surface water and groundwater across the country. Fish and aquatic organisms are exposed to these compounds continuously. This is not a hypothetical concern; documented effects on aquatic endocrine systems have been published extensively in peer-reviewed literature.

The Best Option: Drug Take-Back Programs

Drug take-back programs are the gold standard for medication disposal. They are convenient, free, anonymous, and handle disposal through proper incineration — the only method that eliminates pharmaceutical compounds without environmental risk.

Take-back programs accept most medications: prescription drugs, OTC medications, vitamins, and most controlled substances. They typically do not accept sharps (needles and syringes), which have their own disposal pathway described below. You do not need to identify yourself, show ID, or explain why you are disposing of the medication. Drop it in the kiosk and leave.

The FDA Flush List: When Flushing Is the Right Choice

Despite the environmental concerns around flushing medications, the FDA maintains a specific list of drugs that should be flushed immediately when take-back is not available. The rationale is that for these specific high-risk medications, the risk of accidental ingestion or diversion is so severe that it outweighs the environmental risk of flushing.

These are primarily high-potency opioids and other medications where a single dose can be fatal to a child or to someone without tolerance. Current FDA flush list medications include:

• Fentanyl patches and lozenges (including brands: Actiq, Duragesic)
• Oxycodone tablets and liquid (OxyContin, Percocet, Roxicodone)
• Hydrocodone products (Vicodin, Norco)
• Morphine (MS Contin, MSIR, Kadian)
• Hydromorphone (Dilaudid)
• Methadone tablets
• Buprenorphine sublingual tablets and films (Suboxone, Subutex)
• Meperidine (Demerol)
• Tapentadol (Nucynta)
• Sodium oxybate (Xyrem)
• Diazepam rectal gel (Diastat)

The complete, current flush list is available at FDA.gov/disposal. If you have one of these medications and no take-back option is immediately accessible, flush it. For fentanyl patches specifically: fold the patch sticky-side inward before flushing to minimize any environmental release.

Trash Disposal: The Correct Method

For medications not on the flush list and when take-back is not available, the FDA recommends the following trash disposal method. Note that this is not simply tossing the bottle in the bin — the steps are designed to prevent both accidental ingestion and intentional retrieval:

1. Remove the medication from its original container.
2. Mix the medication with an undesirable, unpalatable substance — used coffee grounds, dirt, or cat litter are all effective. The goal is to make the medication unrecognizable and unappealing to anyone who might go through the trash.
3. Place the mixture in a sealed plastic bag or a sealed container (a lidded food container works well).
4. Put the sealed container in the household trash.
5. Remove or completely black out all personal information from the prescription label before placing the original bottle in recycling or trash.

Do not crush tablets before disposal — crushing can create inhalable dust and is not necessary for this method to work. Do not mix medications together in one bag if they are going into trash, in case the bag is found and its contents need to be identified.

Special Considerations for Controlled Substances

Schedule II–V controlled substances (opioids, benzodiazepines, stimulants, sleep aids) can be brought to any DEA-authorized take-back kiosk — this is the recommended method. If a take-back is not available and the drug is not on the flush list, the sealed-bag trash method above is acceptable.

Two additional options specific to controlled substances:

• DEA mail-back envelopes: The DEA sells pre-paid mail-back envelopes that allow you to mail controlled substances directly to an authorized destruction facility. These are available through the DEA website or authorized distributors. This is a useful option if mobility or transportation makes visiting a kiosk difficult.
• Authorized collector locations: Hospitals, clinics, and some long-term care facilities may operate DEA-authorized collector programs for patients. Ask your healthcare provider or hospital pharmacy.

Expired Medications: Are They Dangerous?

Expired medications are generally not dangerous — they have not transformed into toxic substances after the expiration date. What changes is efficacy: the active ingredient may gradually degrade, meaning the drug becomes less potent over time. For most medications, this is a gradual process and modest degradation over months past expiration is unlikely to be clinically significant.

However, there are exceptions: liquid antibiotics, eye drops, and certain biologics can degrade more quickly and potentially cause harm. Nitroglycerin is particularly sensitive to storage and degrades meaningfully over time. Epinephrine auto-injectors (EpiPens) should be replaced promptly after expiration because full potency is critical in an anaphylaxis emergency.

The practical guidance: do not stockpile medications past their expiration date assuming you might need them later. Dispose of them properly through the methods above and refill prescriptions when needed.

Sharps: Needles and Syringes

Sharps require a separate disposal pathway. They should never be placed in household recycling, and most take-back kiosks do not accept them. Options include:

• Sharps collection programs: Many pharmacies offer mail-back sharps disposal containers. Some municipalities operate sharps drop-off programs at pharmacies, hospitals, or health departments.
• Approved sharps containers: FDA-cleared sharps disposal containers (puncture-resistant, leak-proof, with a lid that cannot be reopened) can be used for home collection and then brought to a collection site.
• Never recap needles before disposal. Never place loose sharps in a plastic bag or soft container.

Find local sharps disposal options through SafeNeedleDisposal.org or by calling your local health department.

Frequently Asked Questions

What is the safest way to dispose of old medications?

The safest disposal method for most medications is through a DEA-authorized drug take-back program. These are available at many pharmacies, hospitals, and law enforcement locations year-round, and the DEA hosts national collection events twice yearly. Take-back sites accept most medications — including controlled substances — at no charge, and the drugs are destroyed through incineration. This prevents medications from entering the water supply or being diverted for misuse.

Can I flush medications down the toilet?

Only for certain medications on the FDA's official "flush list" — drugs that are so dangerous that the risk of someone (especially a child or pet) getting access to them outweighs the environmental concern of flushing. The flush list includes some opioids and other high-risk controlled substances. For all other medications, flushing is discouraged because pharmaceutical compounds can pass through water treatment and enter waterways, affecting aquatic ecosystems and potentially drinking water.

How do I safely throw medications in the trash if no take-back is available?

If a take-back program is not accessible, the FDA recommends mixing the medication with an undesirable substance — coffee grounds, dirt, or cat litter — to make it unpalatable. Seal the mixture in a bag or container, scratch out any personal information on the label, and place it in your household trash. This method makes the drugs less attractive to people who might root through garbage, while still keeping them out of the water supply.

Can I throw away controlled substances in the trash?

Technically, yes — the FDA's guidance for controlled substances not on the flush list follows the same mix-and-trash approach when take-back isn't available. However, take-back is strongly preferred for controlled substances (opioids, benzodiazepines, stimulants) because the risk of diversion is higher. The DEA specifically authorizes authorized collectors (pharmacies, hospitals, law enforcement) to accept these drugs for secure destruction.