CR Packaging for Pharmaceutical Products

Keystone Folding Box Co. designs and manufactures innovative Child-Resistant (CR) packaging for pharmaceutical blister products, helping drug manufacturers meet critical safety regulations while enhancing the patient experience. Our patented paperboard-based platforms are engineered to prevent accidental child access and ensure usability for seniors and caregivers.

What Is CR Packaging for Blister Products?

Child-Resistant (CR) packaging for blister products is a secondary packaging solution designed to limit a child’s ability to access individual doses while still allowing adults to retrieve medication when needed.

In practice, this involves enclosing a blister card inside a protective carton or sleeve with built-in locking mechanisms or opening sequences. To be considered CR, the package must pass specific protocol testing under 16 CFR §1700.20, the standard set by the U.S. Consumer Product Safety Commission (CPSC).

Folding Cartons for Medical Devices

CR Must Also Be Senior-Friendly (SF)

Under U.S. regulations, a package cannot be labeled Child-Resistant unless it is also proven to be Senior-Friendly (SF). That means:

  • Children under 5 years old must not be able to open the package during controlled testing.
  • Seniors aged 50–70 must be able to open and reclose the package with ease, even if they have limited dexterity or grip strength.

CR/SF packaging ensures that safety doesn’t come at the expense of accessibility—an essential requirement for elderly patients and caregivers managing chronic medications.

FAQ: Child-Resistant / Senior-Friendly (CR/SF) Blister Packaging for Prescription Medications

CR/SF packaging, short for Child-Resistant / Senior-Friendly packaging, is designed to prevent children under 5 years old from accessing harmful doses of medication, while still allowing older adults to use the package without difficulty.

The Consumer Product Safety Commission (CPSC) enforces requirements under the Poison Prevention Packaging Act (PPPA). The Food and Drug Administration (FDA) intersects when it comes to labeling and CGMP compliance, but CPSC sets the testing standards.

Yes. All oral prescription drugs intended for household use must be in CR/SF packaging unless they fall under a specific exemption (such as sublingual nitroglycerin or oral contraceptives in mnemonic dispensers).

Blister packs must pass CPSC test protocols:

  • Child panel (42–51 months old): At least 80% of children must be unable to access more than 8 units or a toxic amount within 10 minutes.
  • Senior-adult panel (ages 50–70): At least 90% of adults must be able to open the package within 5 minutes.

A blister fails if a child opens/accesses:

  • More than 8 doses, or
  • A toxic amount of the medication, whichever is lower.

This ensures even limited child access doesn’t reach harmful levels.

Most blisters are treated as nonreclosable packaging. This means they are tested only for initial child resistance and adult ease-of-opening—not for reclosing performance.

Yes. The PPPA lists certain exemptions, such as:

  • Sublingual nitroglycerin tablets
  • Sublingual or chewable isosorbide dinitrate ≤10 mg
  • Oral contraceptives in mnemonic dispensers
    All other oral prescription medications generally require CR/SF packaging.

If a product is packaged in a non-complying package (permitted in limited cases), it must be labeled:

“This Package for Households Without Young Children.”

If you make claims that a package is CR, FDA expects these to be truthful and not misleading.

Manufacturers (or third-party labs) conduct CR/SF testing according to 16 CFR 1700.20. Results must be documented and kept on file. CPSC does not pre-approve packaging—compliance is based on successful test performance.

Any change that could affect opening difficulty (lidding foil, cavity size, number of doses per card, or mechanism of access) may require new testing. Sometimes a bracketing rationale can justify coverage by existing data, but this must be scientifically supported.

  • CR/SF packaging protects against child poisoning accidents while maintaining adult usability.
  • Tamper-evident packaging (required for OTC drugs) helps detect unauthorized access.
  • They are separate requirements, and one does not replace the other.

  • Takeaway: If your blister pack is for an oral prescription drug in the U.S., you should assume CR/SF packaging applies unless you fall under a narrow exemption. Testing to 16 CFR 1700.20 is the gold standard.

CR/SF Certified Packaging Solutions from Keystone

Key-Pak®

  • Children under 5 years old must not be able to open the package during controlled testing.
  • Seniors aged 50–70 must be able to open and reclose the package with ease, even if they have limited dexterity or grip strength.
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Folding Cartons Packaging
Folding Cartons Packaging

Ecoslide-RX®

  • Fully recyclable, plastic-free CR packaging
  • Designed for use with push-through blister cards
  • Widely used in retail, mail-order, and clinical trials
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Ecoslide-RX 2.0TM

  • Evolution of the original Ecoslide-RX
  • Improved grip area and ergonomic opening for enhanced senior accessibility
  • Ideal for high-speed production lines
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Folding Cartons Packaging
Folding Cartons Packaging

Ecoslide-OTCTM

  • Combines the CR/SF protection of Ecoslide-RX with shelf-ready retail features
  • Designed specifically for over-the-counter medications requiring CR packaging
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Key-Pak PlusTM

  • Enhanced version of Key-Pak with catch-flap retention
  • Prevents full removal of the blister from the carton for added security and traceability
  • Supports multi-dose adherence formats
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Folding Cartons Packaging
Folding Cartons Packaging

Push Pak®

  • A next-generation CR/SF platform engineered for intuitive, one-directional motion
  • Simple “push-to-release” mechanism built into the inner card
  • Certified CR while enhancing the user experience for seniors
  • Ideal for oral solid dose medications and adherence packaging
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Why Keystone?

  • CPSC-compliant designs tested by third-party laboratories
  • Proven expertise in CR/SF packaging for blisters
  • Sustainable, paperboard-based formats
  • Scalable production capabilities for commercial, clinical, and retail applications
  • Made in the USA

Get in touch today to learn more about integrating CR/SF packaging into your pharmaceutical supply chain. Let Keystone Folding Box Co. help you meet regulatory demands while improving patient safety and satisfaction.