The Strategic National Stockpile, the federal reserve for emergencies

On the morning of September 11, 2001, a two-year-old federal program shipped drugs and medical supplies to New York City. According to the stockpile's own response history¹, the first deliveries arrived within seven hours. Later that fall, during the anthrax letter attacks, the same program delivered countermeasures to more than 50 sites within five hours of the threat being identified.

That program is now the Strategic National Stockpile (SNS). In fiscal 2025 it held an inventory worth $11.9 billion, the Administration for Strategic Preparedness and Response (ASPR) told Congress in its fiscal 2027 budget justification². Congress gave it $1.0 billion for fiscal 2026.

People often mistake the stockpile for a national backup supply of everyday medicines. It isn't one. It holds products for bioterrorism, chemical and radiological emergencies and pandemics, many of which have no commercial market at all. This explainer covers how the stockpile came to be, what it holds, what it costs, and what federal auditors have found when they looked inside.

From a CDC drug cache to an ASPR center

The National Pharmaceutical Stockpile was created in 1999. ASPR's history page says its purpose was readiness against bioterrorism agents such as anthrax, smallpox, plague, botulism, tularemia and viral hemorrhagic fevers, and that its mission was to deliver large quantities of supplies to states "within 12 hours of the federal decision to use the stockpile." After the 2001 attacks it was renamed the Strategic National Stockpile in 2003.

For its first two decades the Centers for Disease Control and Prevention ran it. The HHS Office of Inspector General, in an April 2025 audit³, recounted that CDC managed the stockpile from 1999 to 2018, that the inspector general had found "systemic issues" during that time such as an inventory system that tracked items inaccurately, and that HHS moved responsibility to ASPR in 2018.

Its legal basis is section 319F-2 of the Public Health Service Act, codified at 42 U.S.C. 247d-6b⁴. It directs the HHS secretary to maintain stockpiles of "drugs, vaccines and other biological products, medical devices, and other supplies" in amounts the secretary judges "appropriate and practicable." The same section requires an annual threat-based review of the contents, due to Congress each March 15, under requirements expanded by the Pandemic and All-Hazards Preparedness and Advancing Innovation Act of 2019⁵.

Today the stockpile is one of ASPR's centers. ASPR's staff page⁶ puts the workforce at more than 250 civil servants, Public Health Service officers and contractors.

What the stockpile holds

ASPR does not publish item-level quantities, for security reasons. Its inventory overview⁷ lists the categories: antibiotics, antivirals, vaccines, chemical nerve agent antidotes, antitoxins, radiological chelators and thyroid blockers, intravenous fluids and IV supplies, airway management and burn supplies, ventilators and personal protective equipment. ASPR notes that "many of these products are not commercially available."

One piece sits outside federal warehouses. The CHEMPACK program⁸, started as a pilot in September 2002 and implemented nationwide in March 2008, places nerve agent antidotes in hospitals and fire stations because they must be given within minutes. ASPR says it manages 1,974 CHEMPACK containers and that more than 90 percent of the population lives within an hour of one. State and local officials can open them without a federal request.

Several stockpiled products are old, inexpensive generics. FDA has repeatedly extended the usable dates of doxycycline hyclate 100 mg capsules held in strategic stockpiles for anthrax preparedness, according to its expiration dating extension page⁹, which lists memos from 2018, 2020 and 2023 and a 2019 guidance for stockpile holders. The same page quotes a February 2020 HHS message relaying FDA's conclusion that certain stockpiled lots of oseltamivir 75 mg capsules could be used for up to 15 years from manufacture if stored correctly. ASPR's budget document adds that stockpiled amoxicillin capsules received an FDA dating extension in 2024.

Those extensions come mostly through the federal Shelf-Life Extension Program. ASPR says initial testing typically adds 12 to 24 months, products that fail are removed, and since 2012 extended products are no longer relabeled. New dates go out by letter or online instead. GxRadar's explainer on how expiration dates are set covers the science behind those labels.

What it costs

Since fiscal 2023 the stockpile's budget has hovered just under or at $1 billion a year, ASPR's budget justification shows. The fiscal 2027 request moves $61.8 million of staff salaries into a separate ASPR account, which is why the stockpile line appears to drop.

Authorization figures in the statute itself are lower and older. Section 247d-6b authorizes $610 million a year for fiscal 2019 through 2021 and $750 million a year for fiscal 2022 and 2023. Appropriations have run above those levels.

Pandemic money was separate. The Government Accountability Office reported in October 2022¹⁰ that HHS obligated $6.1 billion in COVID-19 relief funds for stockpile supplies, mostly ventilators and personal protective equipment. From fiscal 2015 through 2021, GAO found, HHS obligated nearly $5 billion in regular appropriations, mostly for anthrax and smallpox countermeasures.

ASPR has also been shrinking the footprint. In fiscal 2025, it told Congress, the stockpile closed two warehouses that held protective equipment and one that held ultra-cold products, freeing almost $38 million that year. The same document says that "in 2025 SNS sunset its FMS and 12-hour push package capabilities," ending the federal medical stations and the pre-packed shipments that defined the program's original 12-hour promise.

What federal auditors found

GAO has examined the stockpile several times since the pandemic. In January 2022, GAO noted later¹¹, it added HHS's leadership and coordination of public health emergencies to its High Risk List, citing stockpile problems among other issues. Its two most detailed reports since then reached these conclusions.

GAO's 2024 report also found that tribal officials worried about having facilities to receive and store deliveries, and that the division of stockpile roles between ASPR and CDC was unclear to the states. The inspector general's site audits have been more favorable. Its 2025 report on one storage site³ found adequate physical security and inventory records. ASPR reported a 99.98 percent inventory accuracy rate across the stockpile in fiscal 2025.

How states get supplies, and where shortages fit

Deliveries happen only on request. Governors or their designees, senior health officials of states, tribes, territories and four directly funded cities (Chicago, Los Angeles, New York City and Washington, D.C.) can ask for help through the HHS Secretary's Operations Center, according to ASPR's request guidance¹². ASPR weighs state resources, commercial availability and competing requests, and says a request may be met by sourcing help rather than a shipment. The SNS center page¹³ calls the stockpile a safety net for when state and local resources are exhausted or products "are not available on the commercial market during an emergency."

That framing explains why the stockpile rarely figures in routine drug shortages. An April 2024 HHS white paper on shortages¹⁴ said the SNS "focuses on medical countermeasures that do not have a commercial market." Everyday shortages are mostly of hospital generics. Of the 69 current shortages on FDA's list as of November 3, 2026, 71 percent were injectables, according to GxRadar's analysis of FDA shortage data¹⁵ on our shortage tracker. The federal effort aimed at that problem is a separate reserve of raw ingredients, described in our piece on the Strategic API Reserve, and the broader push covered in HHS's supply chain resilience reports.

The next shift is toward the states. After a March 2025 executive order on state and local preparedness, ASPR says it issued high-level guidance in June 2025 to help jurisdictions build their own stockpiles, and its budget justification says it will update that jurisdictional stockpiling guidance and offer technical assistance to states setting up programs. The fiscal 2027 request, flat at $938.2 million for stockpile programs, is now before Congress. More on the federal supply chain is on our supply chain desk.