In a hospital somewhere in Pakistan, a neurologist prepares to administer alteplase, a clot-dissolving injection, to a patient showing the early signs of an ischaemic stroke. Time is critical. The treatment window is narrow. What the neurologist cannot afford to question in that moment is whether the vial on the tray has been stored correctly throughout its journey from manufacturer to pharmacy to hospital. Whether the cold chain held. Whether the medicine will actually work.
This concern is far from hypothetical. Cold-chain failure is one of the most persistent and under-reported problems in Pakistan’s pharmaceutical supply chain, and it affects not only emergency hospital medicines but a broad range of products that patients across the country depend on every day.
“A medicine that has been stored incorrectly is not a medicine. It is an unknown substance in a labelled container.”
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What Is the Cold Chain, and Where Does It Break?
The pharmaceutical cold chain refers to the unbroken series of temperature-controlled conditions required to preserve the potency and safety of temperature-sensitive medicines from manufacture to patient. For most such medicines, the required range is 2°C to 8°C. For others, sub-zero storage is needed. Across all categories, the rule is the same: a single significant excursion beyond the required range can compromise the product, either partially or completely.
In Pakistan, the cold chain breaks at multiple points. It breaks in unrefrigerated transport on summer highways where temperatures inside metal containers can exceed 50°C. It breaks at the retail pharmacy where electricity cuts left a refrigerator off for six hours overnight. It breaks at the patient’s home because no one explained the medicine needed to be kept cold. What makes this particularly serious is that a temperature-compromised medicine usually looks perfectly normal. The vial is intact. The packaging is undamaged. The expiry date has not passed. There is no visible warning that the active ingredient has degraded.
Which medicines are most at risk?
The list of temperature-sensitive medicines in common use in Pakistan is longer than most patients, and some healthcare professionals, appreciate:
- Insulin: An estimated 33 million Pakistanis live with diabetes. Insulin stored above 30°C or subjected to freezing loses potency. Patients experiencing poor glycaemic control may blame their diet or compliance when the real cause is a compromised medicine.
- Vaccines: Pakistan’s immunisation programme has invested in cold-chain infrastructure, but gaps remain, particularly in rural and peri-urban areas. Cold-chain excursions during the last mile of delivery are among the most common and least monitored failures.
- Biologics and oncology medicines: Trastuzumab, bevacizumab, adalimumab, and other high-value biologics require strict refrigeration. A degraded biologic infused in a cancer patient represents a therapeutic failure, and one that is almost never identified as such.
- Emergency specialist medicines: Thrombolytics such as alteplase (Actilyse 50mg) must be stored between 2°C and 8°C. For a medicine used in stroke and pulmonary embolism where efficacy depends on the drug performing exactly as expected under time pressure, a compromised vial is not merely ineffective; it represents a failure at the most critical moment of a patient’s care.
- Other specialist injectables: Products such as alprostadil (Caverject) and pancreatin-based enzyme replacements such as Kreon 10000 IU require appropriate storage throughout the supply chain to maintain their clinical effectiveness.
The consequences of cold-chain failure
When a cold-chain medicine is compromised, the clinical consequences are serious and almost always invisible. The diabetic patient on degraded insulin presents with unexplained hyperglycaemia that their doctor investigates, adjusts for, and perhaps attributes to the patient’s own behaviour. The cancer patient who receives a degraded biologic completes a treatment cycle that provides no benefit. The stroke patient administered a temperature-compromised thrombolytic may not regain the neurological function they would otherwise have recovered.
In none of these cases will the cold-chain failure appear in the patient’s medical record. It will not trigger a pharmacovigilance report. This invisibility is precisely what makes cold-chain failure in the commercial sector so persistent.
What responsible pharmacies should be doing
DRAP’s Good Storage and Distribution Practices (GSDP) guidelines require pharmaceutical retailers to maintain appropriate temperature-controlled storage and to document and investigate any excursions. In practice, enforcement at the retail pharmacy level is limited, and the gap between what is required and what is routinely happening is wide.
The growth of online pharmacy in Pakistan makes this both a greater risk and a real opportunity. A poorly equipped online pharmacy can dispatch cold-chain medicines from an inadequately maintained refrigerator in packaging that provides no temperature protection during delivery. A properly equipped, DRAP-compliant platform can, for the first time, bring validated cold-chain dispensing directly to patients anywhere in the country.
Online Pharmacy is a DRAP-registered platform that stores and dispatches temperature-sensitive specialist medicines, including Actilyse 50mg (alteplase), Kreon 10000 IU (pancreatin), and Caverject (alprostadil), all dispatched in validated cold-chain packaging: insulated containers with gel ice packs maintaining 2°C to 8°C throughout delivery to any city in Pakistan.
What patients should ask before ordering cold-chain medicines online
If you or a family member requires a temperature-sensitive medicine from an online source, the following questions will tell you a great deal about the platform you are using:
- Is the pharmacy DRAP registered? Ask for the licence number.
- How is the medicine stored before dispatch? The answer should describe a pharmaceutical refrigerator with temperature monitoring, not simply “a cool place” or “air-conditioned storage.”
- How is the medicine packaged for delivery? The expected answer is validated cold-chain packaging: insulated containers with gel ice packs that maintain the required temperature throughout transit.
- Is the medicine dispensed against a verified prescription? For prescription-only cold-chain medicines, proper prescription verification is itself a marker of legitimate practice.
Final word
Pakistan’s cold-chain medicine problem will not be solved by any single intervention. It requires investment in infrastructure at every tier of the supply chain, more consistent regulatory enforcement at the retail level, and patients who know what to ask for. The medicines at stake are not optional. For a stroke patient, a diabetic, a cancer patient on biologics, or a child receiving a vaccine, a temperature-compromised product is not a minor inconvenience. Getting the cold chain right, consistently and verifiably, all the way to the patient, is a clinical necessity.
