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Disposing of expired controlled substances from a ship’s medicine chest
Controlled substances aboard vessels

Disposing of expired controlled substances from a ship’s medicine chest

The short version 21 CFR 1301.25(i) routes vessel controlled substance disposal through 21 CFR part 1317. Part 1317.05 gives a practitioner four disposal routes. None of them is available on
By Discovery Health MD
Medically reviewed by Ann Jarris MD, FACEP
Updated August 2026
8min read
Disposing of expired controlled substances from a ship's medicine chest | Discovery Health MD

The short version

  • 21 CFR 1301.25(i) routes vessel controlled substance disposal through 21 CFR part 1317.
  • Part 1317.05 gives a practitioner four disposal routes. None of them is available on a vessel at sea.
  • Overboard discharge and the ship incinerator are not lawful disposal methods.
  • Destruction must render the substance non-retrievable, a standard shipboard equipment does not meet.
  • Expired stock still counts as inventory and still appears in both annual reports until it is lawfully disposed of.

Every ship’s medicine chest eventually holds a drug past its expiry date. If that drug is a controlled substance, the moment it stops being usable stock it becomes a disposal problem with a specific federal answer, and the answer is not available to a vessel at sea.

This page sets out where the duty comes from, the four routes the regulation actually permits, why a vessel can use none of them underway, and the shore-side sequence that works. For the chest itself, see MedChest management.

Where the disposal duty comes from

The routing rule21 CFR 1301.25(i) permits controlled substances acquired under the vessel exception to be distributed only to persons under the general supervision of the medical officer, except in accordance with part 1317[1]. That exception is the disposal door, and it is the only one.

So disposal is not a housekeeping decision made aboard. It is governed by 21 CFR part 1317, the same disposal regime that applies to a pharmacy or a clinic[2].

The four lawful routes, and what each needs

Section 1317.05(a) gives a registered practitioner in lawful possession of controlled substances in inventory four ways to dispose of them[3]. The third column is the maritime reality that no published guide states.

Route under 1317.05(a) What it requires Available to a vessel at sea?
Destroy on site to a non-retrievable standard Requires a compliant on-site method under subpart C NO. A ship incinerator or galley waste stream does not render a substance non-retrievable, and nothing aboard is an approved method
Deliver to a reverse distributor Carrier pick-up, or reverse distributor pick-up at your registered location NOT AT SEA. A vessel underway is not a registered location and no carrier can collect from it
Return or recall to where it came from Delivery to the registered person you obtained it from, the manufacturer, or an authorised returns agent ASHORE ONLY. This is the realistic route for most vessel stock
Request assistance from the Special Agent in Charge Submit DEA Form 41 listing the substances; the SAC instructs the manner of disposal ASHORE ONLY, and the SAC decides the method, not you

Why none of the four works at sea

Three of the four routes turn on a registered location and physical transfer to another registrant. A vessel underway is neither. The fourth, on-site destruction, turns on a standard rather than a place.

The non-retrievable standardSection 1317.90 requires destruction sufficient to render the substance non-retrievable. Where substances are comingled, the method must render all of them non-retrievable, and where the contents are unknown but may reasonably include controlled substances, the method must render non-retrievable any controlled substance likely to be present[4].

That is a chemical and physical standard, not a procedural one. Burning a vial in a ship’s incinerator does not demonstrate it, and no record of two officers signing a form converts an unapproved method into an approved one.

The practical conclusion: expired controlled substances come ashore. Plan the voyage around that fact rather than discovering it at an inspection. What an inspector examines is set out in the inspection document checklist.

What you must not do with expired stock

The shortcut How it is usually described Why it fails
Overboard Discharge at sea Not a lawful disposal route under part 1317, and creates a MARPOL problem on top of a DEA problem
Ship incinerator Burn it with the rest of the waste Not an approved method, and the non-retrievable standard is not met by ordinary incineration
Crew or master destroys it Two officers witness and sign Witnessing is good practice, it is not a disposal method. Part 1317 lists the methods and this is not among them
Leave it in the chest Expired stock stays until someone deals with it Expired controlled substances still count as inventory and still appear in both annual reports

The last row is the one that quietly damages programs. Expired stock left in the chest is still inventory. It must still be accounted for as purchased, and it will appear in the annual accounting under paragraphs (e) and (h) until it is lawfully disposed of[1]. See the two annual reports.

The shore-side sequence that works

  1. Segregate aboard. Move expired stock out of usable inventory, keep it secured, and log the date it was withdrawn from use. Segregation is not disposal, it is bookkeeping hygiene until disposal happens.
  2. Pick the route before the port call. For most vessel stock the realistic options are return to the registered supplier it was obtained from, or transfer to a reverse distributor at a registered location ashore[3].
  3. If the route is unclear, use the Form 41 door. A registrant may request assistance from the Special Agent in Charge, submitting DEA Form 41 listing the substances to be disposed of. The SAC then instructs the manner of disposal[3].
  4. Capture the paperwork at the moment of transfer. Whatever route is used, the record of what left the chest, when, and to whom is what the program is later judged on.

Who initiates mattersOn the medical officer route the officer is the registrant and owns the disposal decision. On the master requisition route there is no registrant physician behind the stock, which changes who can lawfully initiate a return. The two routes are compared in medical officer or master requisition.

What disposal does to your records

Disposal is the third of the three verbs both annual reports must account for: controlled substances purchased, dispensed or disposed of during the year[1]. A disposal event that is not recorded produces a reconciliation gap that surfaces later as an unexplained shortfall.

Records under 21 CFR part 1304 must be kept and available for inspection and copying for at least two years[5]. Keep disposal documentation to the same standard as acquisition documentation. The full record set is in controlled substances recordkeeping aboard a vessel.

Common questions

Can expired controlled substances be thrown overboard?

No. 21 CFR 1301.25(i) routes disposal through part 1317, and discharge at sea is not one of the methods that part permits[1][2]. It also creates a marine pollution issue on top of the DEA issue. See Controlled Substances.

Can we burn them in the ship’s incinerator?

No. Section 1317.90 requires destruction sufficient to render the substance non-retrievable, and where substances are comingled the method must render all of them non-retrievable[4]. Ordinary shipboard incineration does not demonstrate that standard. Ask us to plan the alternative.

What are the lawful disposal routes?

Section 1317.05(a) gives four: prompt on-site destruction under subpart C, delivery to a reverse distributor registered location, return or recall delivery to the registered person it was obtained from or the manufacturer, or a request for assistance from the DEA Special Agent in Charge[3]. Three require a registered location ashore.

What is DEA Form 41 used for?

It is the form a registrant submits to the Special Agent in Charge when requesting assistance with disposal, listing the controlled substances to be disposed of. The SAC then instructs the registrant on the manner of disposal[3]. See DEA Diversion Control for current forms.

Does a two-signature witness form make destruction lawful?

No. Witnessing is sound internal control and it is not a disposal method. Part 1317 sets out the permitted methods and a signed witness statement is not among them[2][3]. Our Consulting service reviews programs that rely on this.

Do expired drugs still count in the annual reports?

Yes, until they are lawfully disposed of. Both annual reports account for controlled substances purchased, dispensed or disposed of during the year[1]. Expired stock sitting in the chest is still inventory. See the two annual reports.

How long do we keep disposal records?

Records required under 21 CFR 1304.04 must be kept by the registrant and available for inspection and copying for at least two years[5]. Treat disposal paperwork the same as acquisition paperwork. Our MedChest service maintains both.

Not sure your program would survive an inspection?

We provide the DEA-registered medical officer, the registration structure, the records and both annual reports. A physician reviews your fleet and shows you exactly where the gaps are.
Medically reviewed by

Ann Jarris, MD, MBA, FACEP

CEO & Co-Founder · Board-Certified Emergency Physician
Co-founded Discovery Health MD in Seattle in 2016. Every controlled-substances program the company runs is directed by a physician. Meet the physicians →
  1. 21 CFR 1301.25, registration regarding ocean vessels, aircraft and other entities. eCFR, verified 19 August 2026.
  2. 21 CFR part 1317, disposal of controlled substances. eCFR.
  3. 21 CFR 1317.05, registrant disposal. eCFR, four practitioner routes verified verbatim 19 August 2026.
  4. 21 CFR 1317.90, methods of destruction and the non-retrievable standard. eCFR.
  5. 21 CFR 1304.04, maintenance of records and inventories, two-year retention. eCFR.

Related services: Controlled Substances · MedChest · Consulting · All services

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