Pharmaceuticals Packaging

What's the Difference Between Primary and Secondary Pharmaceutical Packaging?

Primary packaging touches the medicine directly: a blister pack holding tablets, a bottle holding liquid, a vial holding an injectable. It requires thermoforming or glass and plastic container manufacturing, a different production process entirely from cardboard and board work.

Secondary packaging is the outer carton or case that holds the primary pack, and it does three jobs at once. It protects the primary pack through storage and transit, it carries the regulatory information a patient or pharmacist needs, name, dosage, batch number, expiry date, and it provides the tamper evidence that confirms nothing has been opened or altered before it reaches the patient. A die-cut carton built to hold a blister pack securely, with no internal movement, is a common example of this category done properly.

What Makes Pharmaceutical Packaging Tamper-Evident?

Under the Falsified Medicines Directive, implemented in the UK through the Human Medicines Regulations, prescription medicine packaging must include a genuine anti-tampering device, not just a printed warning about tampering. A crash lock construction, where the carton locks shut through its own folded structure rather than relying on glue or tape alone, gives a visible sign if the box has been opened before it reaches the pharmacy shelf. Our crash lock boxes use this same locking method, which suits pharmaceutical secondary packaging directly.

Does tamper evidence replace serialisation? No, they work together. Serialisation, the unique identifier and barcode system used to track a product through the supply chain, verifies authenticity, while tamper evidence shows physical interference. A compliant pack needs to work correctly, and structural packaging design has to leave room for the serialisation code without compromising the locking mechanism.

This page covers secondary and transit pharmaceutical packaging, specifically the cartons, cases, and tamper-evident closures that carry a medicine safely from the manufacturer to the pharmacy shelf. If a supplier’s site talks in general terms about pharmaceutical packaging without ever naming which category they actually manufacture, it’s worth asking directly, since the two processes are not interchangeable and a genuine specialist in one is rarely a genuine specialist in both.