Historical Medicine

The 1986 memorandum hid SLEP data and wasted millions of meds

Historical Medicine

Show Notes

A 1986 memorandum hides military-tested SLEP data showing most drugs stayed effective for years past their labels - who decided to keep it secret?

The 1986 memorandum hid SLEP data and wasted millions of meds

In this episode, we walk through how a Department of Defense study and FDA testing questioned the meaning of expiration dates and why the agencies signed a written agreement to limit who saw the results. What did the memorandum seal, and how did that choice shape what civilians and health departments were told?

Person: Joel Davis Program: Shelf Life Extension Program (SLEP) Date: 1986 memorandum; mid-1980s testing Finding: ~90% of >100 tested drugs effective up to 15 years past labeled expiration Example: Ciprofloxacin effective 9 years beyond labeled shelf life

- The DoD faced rising costs replacing pharmaceutical stockpiles that reached labeled expiration before use. - The Department of Defense commissioned the FDA to test more than 100 prescription and OTC drugs under controlled conditions. - SLEP testing found roughly ninety percent of tested drugs remained safe and effective years - sometimes over a decade - past their labeled dates. - In 1986 the DoD and FDA signed a memorandum restricting public access to SLEP scientific data and sharing with other agencies, manufacturers, and public health departments. - Joel Davis, the FDA’s chief of expiration-date compliance, publicly stated that most expired drugs are probably still effective, echoing SLEP’s findings.

To listen to this podcast ad-free and access premium episodes, try our subscription with a 14-day free trial at obomedia.com.

© 2026 OBOMEDIA. All rights reserved. This episode and its content (audio, text, and related materials) are the exclusive property of OBOMEDIA and are protected by applicable copyright laws. Reproduction, distribution, editing, or commercial use, in whole or in part, without prior written permission from OBOMEDIA is prohibited. For permissions, licensing, and business inquiries: [email protected].

More from Historical Medicine

Oct 22, 2026

A radio confession: a prominent journalist says a private secretary redirected seventy Sputnik V doses into the Ministry of Health - who ordered it?

Oct 21, 2026

A Hottentot Venus displayed in a London cage: how did 19th-century medical "science" turn Black bodies into specimens?

Oct 20, 2026

A sedated woman in labor at USC-LA County Hospital is told her "tubes can be untied later"; she signs a consent form-how did that expose them?

Oct 19, 2026

A forester is certified fit to own a gun one week and declared schizophrenic the next - how did a Serbsky psychiatric certificate silence him?

Oct 18, 2026

A banned DX‑IIA electroshock machine ran thirty‑minute sessions on children in a Linyi hospital - how did that expose them?

See all episodes →