FDA Tamper-Evident Packaging Requirements: What Manufacturers Need to Know
In 1982, seven people in the Chicago area died after taking Tylenol capsules laced with potassium cyanide. The capsules had been tampered with after leaving the manufacturer. Within weeks, the FDA established mandatory tamper-evident packaging standards for over-the-counter drugs (21 CFR 211.132, finalized November 1982), and the following year Congress passed the Federal Anti-Tampering Act. Those requirements still govern the industry today. If you manufacture or package consumer products, particularly over-the-counter drugs or food, understanding these requirements is not optional.
The Regulatory Foundation
The core regulation for OTC drug manufacturers is Title 21 of the Code of Federal Regulations, Part 211.132. It requires that all OTC drug products for retail sale use tamper-evident packaging, and that the packaging include a label statement alerting consumers to the specific tamper-evident feature used.
The regulation defines tamper-evident packaging as "one or more indicators or barriers to entry which, if breached or missing, can reasonably be expected to provide visible evidence to consumers that tampering has occurred." The keyword is visible. The damage or disruption must be apparent to an ordinary consumer without special tools or knowledge.
Which Products Are Affected
OTC pharmaceuticals: All solid dosage forms and liquid medications sold at retail must comply with 21 CFR 211.132.
Dietary supplements: The FDA applies similar expectations under 21 CFR Part 111.
Food products: FSMA includes tamper-evident requirements for certain liquid and semi-liquid food categories.
Cosmetics: Not mandated by the same statute, but large retailers require it as a condition of shelf placement.
What Counts as Compliant
The FDA does not mandate a specific mechanism. It specifies an outcome. Compliant methods include:
Film wrappers: Transparent film that tears irreversibly when opened
Blister or strip packs: Individual units sealed in plastic backed by foil
Shrink seals and bands: Heat-shrink material applied over caps or the full container, widely used because they conform to irregular shapes and are visually obvious when broken
Induction seals: A foil membrane bonded to the bottle opening under the cap
Breakaway caps: Caps that leave visible damage upon first opening
Consequences of Non-Compliance
The FDA can issue Warning Letters, initiate mandatory recalls, and pursue criminal prosecution. Beyond regulatory action, non-compliant packaging creates substantial product liability exposure. Consumers have internalized the expectation of tamper evidence since the 1980s. A product without a visible seal arrives with a trust deficit regardless of actual safety.
Get Started with Templock
Templock has been manufacturing tamper-evident seals and heat-shrink labels since 1979, predating the federal mandate by three years. If you are auditing your current packaging line for regulatory readiness, contact Templock's team for a consultation.