Pakistani pharmacies burn expired medicines every month. Here is what research says about upcycling them and what a zero-waste pharmacy could look like.
Walk into any pharmacy in Pakistan at the end of the month. Open the expiry drawer. You will find cartons worth thousands of rupees - Risek, Augmentin, Glucophage, Ventolin - all expired last week. What happens next? As per DRAP rules, we make a list, put them in a sealed bag, and send them for incineration. We burn them. We burn money, chemicals, and years of research.
The question is; if the tablet is expired yesterday, is it really poison today? And if 90% of the drug is still active, why are we burning it instead of re-making it?
This is the heart of Zero-Waste Pharmacy.
WHAT WE DO NOW: THE LINEAR "MAKE-USE-BURN" MODEL
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Our current pharmacy system is linear:
Factory -> Distributor -> Pharmacy -> Patient -> Dustbin / Incinerator
Expiry date is printed as a guarantee. The manufacturer says "we guarantee 100% potency and safety till this date if stored properly." After that date, they take no responsibility. So legally, we cannot sell it. DRAP's disposal guidelines say expired medicines must be destroyed by incineration at 850-1200°C, or by encapsulation and landfill.
This creates three huge problems:
1. Environmental Pollution: When we flush medicines or dump them in landfill, APIs (Active Pharmaceutical Ingredients) leach into groundwater.
2. Financial Loss: For a small pharmacy, expiry loss is profit loss. For government hospitals, it's taxpayer money burned.
3. Ethical Waste: While we burn medicines in Karachi, a BHU in Tharparkar has no Paracetamol.
So can we create a circular pharmacy instead?
CAN EXPIRED MEDICINE BE RE-FORMULATED? THE SCIENCE SAYS YES, BUT...
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This is where it gets interesting. "Expired" does not mean "zero drug."
The FDA's own SLEP program (Shelf Life Extension Program) for the US Army found that 88% of drugs were still potent 1-5 years AFTER their expiry date if stored in ideal conditions.
So there are actually two zero-waste pathways being researched:
PATHWAY 1: DIRECT RE-FORMULATION / RE-PURPOSING
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This is the most promising. Instead of destroying, we extract the API and use it again.
Researchers published in PMC have shown you can extract active ingredients from expired tablets using simple solvent extraction and use them for:
• Expired Paracetamol can be converted into raw material for chemical synthesis.
• Chemical Upcycling: A very exciting field. Expired drugs are not waste, they are expensive chemicals.
• Educational and Industrial Use: Expired medicines can be used in pharmacy colleges for QC tests, dissolution tests, and lab training.
PATHWAY 2: MATERIAL RECOVERY - NOT DRUG, BUT SOMETHING ELSE
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This is already done in Beirut. The American University of Beirut developed ecoboards - they embed whole expired pills (without crushing) inside plastic boards with aluminum barrier layer. Leaching tests showed zero leaching even at 70C. These boards are used to make green walls, furniture. The drug never touches water, never burns, never pollutes. It becomes a product. This is true circular economy - waste becomes resource.
WHY DON'T WE DO IT ALREADY? 4 BIG BARRIERS IN PAKISTAN
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If science says it's possible, why does every pharmacy still burn?
1. Law Says No:
DRAP Act says expired drug is substandard drug. Re-labeling or re-formulating it without a new manufacturing license is illegal. To re-formulate, you would need to be a licensed manufacturer, have a stability lab, and get new approval. A normal pharmacy cannot do it.
2. No Quality Lab at Every Corner:
How do you know expired Augmentin is 95% potent or 40% potent? You need HPLC test. One HPLC test costs Rs. 3000-5000. The tablet itself costs Rs. 50. So Economically it's costly for each strips.
3. The Safety Risk of Degradation Products:
Some drugs don't just lose potency, they become toxic. So you cannot apply one rule to all drugs.
4. Moral Hazard:
If people know expired drugs can be reused, black market will start re-printing expiry dates. Allowing re-formulation without strict control will create more fake expiry scandals.
SO WHAT DOES A REAL ZERO-WASTE PHARMACY LOOK LIKE FOR PAKISTAN?
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We cannot legally re-formulate expired medicines today in a retail pharmacy. But we CAN build zero-waste at 5 other levels:
1. Prevent Expiry in First Place - Smart Inventory
Use FEFO (First Expiry First Out), ABC analysis, and short-expiry alerts 6 months before.
2. Reverse Logistics - Take-Back Programs
Instead of patients flushing medicines, create a DRAP-approved take-back bin in every outreach pharmacy.
3. Green Pharmacy Manufacturing
Pharma companies should design drugs with longer stability using better excipients and Alu-Alu packaging, especially for Karachi's heat and humidity. Less packaging, smaller pack sizes for antibiotics (7 days not 20 days) to avoid leftover.
4. Safe Destruction, Not Burning in Open
If we must destroy, don't burn in open ground. Use proper incinerator or encapsulation with cement, as per WHO guidelines. Never flush antibiotics.
5. Upcycling Lab in Universities
Every pharmacy university in Pakistan should have a "Drug Recycling Lab" where expired drugs collected from hospitals are used to teach extraction, synthesis, and analysis. So students learn, and waste becomes education.
THE FUTURE: A DRAP-APPROVED CIRCULAR MODEL?
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Imagine 2030. You scan an expired medicine at pharmacy. App tells you: "This is Paracetamol, chemically stable, eligible for upcycling. Send to XYZ manufacturer for recovery." You get Rs. 10 credit. Manufacturer extracts API, purifies it, and uses it to make Paracetamol for export after full QC testing. Nothing is burned. That is Circular Pharma.
For that we need:
• A national list by DRAP of which APIs can be recovered (like Paracetamol, Metformin) vs which must be destroyed (Tetracycline, Biologics, Insulin).
• Certified recycling centers, not every pharmacy doing it.
• Blockchain tracking of expiry to expiry re-formulation.
CONCLUSION
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Zero-waste pharmacy does not mean we give expired tablets to patients as they are. That would be dangerous. It means we stop seeing expired medicine as garbage and start seeing it as a chemical resource.
The tablet in your hand took 10 years of research, tons of water, and energy to make. Burning it in 10 minutes is not just wasteful, it's disrespectful to science.
We cannot re-formulate everything tomorrow. But we can waste less today. And that starts with one shelf, one pharmacy, one pharmacist checking FEFO every morning.
REFERENCES
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1. Abad-Grillo T, McNaughton-Smith G. Chemical Upcycling of Expired Pharmaceuticals as a Source of Value-Added Chemicals for Organic Synthesis and Medicinal Chemistry. Molecules. 2024;29(20):4811. https://doi.org/10.3390/molecules29204811
2. Lyon RC, et al. Stability profiles of drug products extended beyond labeled expiration dates. Journal of Pharmaceutical Sciences. 2006;95(7):1549-1560.
3. Mawla Z, Slika W, Saad W, Saad G. Mechanical Properties of Recycled Polyethylene / Polypropylene Material with Embedded Pharmaceutical Waste. Proceedings of the 4th World Congress on New Technologies (NewTech'18), Madrid; 2018. https://doi.org/10.11159/icepr18.157
4. Recycling of expired paracetamol-containing drugs as source of useful reagents for an organic synthesis. Journal of Applied Pharmaceutical Science. 2019;9(02):052-056.