Fake medicines are having a frightening moment in Nigeria. In September 2025, NAFDAC announced the seizure of 277 cartons of fake, unregistered antimalarials — over ₦1.2 billion worth, close to half a million doses — concealed in a Lagos warehouse and falsely declared as spare parts, and warned it pointed to a wider counterfeit threat. The scale behind the headlines is real: a 2024 review of studies across Africa found that about 22.6% — roughly 1 in 5 — of the medicines sampled were substandard or falsified, and the World Health Organization reported that cases of fake and substandard medicines roughly doubled between 2019 and 2023.

Here is the one idea that shapes this whole guide, because it is the honest truth most articles skip: you cannot see a good fake. Modern counterfeiters clone packs so precisely that a fake can look more convincing than the real thing — as a pharmacist who was part of the team that ran Nigeria’s proof-of-concept for medicine authentication before it launched, I can tell you that even trained eyes often could not tell two identical-looking packs apart. So instead of a list of things to “look for,” this walks you up: from the checks almost everyone trusts — and why each one fails against a clone — to the one check that actually beats a clone, and then to where the technology is heading.

Rung 1 — Your eyes (the weakest check)

Look at the box and blister — seal intact, batch number and expiry present and matching, print crisp, no spelling errors. This catches the lazy fake.

But hold this firmly: a clean-looking pack is not a verified pack. A good clone copies the seal, the hologram, the colour, the font — everything you can see. Use your eyes to catch the clumsy counterfeits, never to reassure yourself that a pack is safe. Every check below exists because your eyes can be beaten.

Rung 2 — The NAFDAC Greenbook (catches lazy fakes, but knows its limit)

Every genuine product carries a NAFDAC registration number. Check it at Nigeria’s official database, greenbook.nafdac.gov.ng, and confirm the name, manufacturer, and number all match your pack.

Now the limit that makes this a rung and not the answer: the Greenbook confirms that a genuine product with that number exists — it does not prove the pack in your hand is that product, because counterfeiters copy the real registration number of a real drug straight onto their clones. A mismatch or a blank result is a clear walk-away. A match on a good clone tells you nothing — the clone is wearing a genuine number that was never its own.

Rung 3 — An accountable seller (your statistical shield)

Since your eyes can be fooled and a copied number can pass the Greenbook, where you buy becomes your strongest everyday protection — not because a pharmacy can spot a perfect clone by eye, but because it changes the odds long before the pack reaches you. Sealed goods from a registered pharmacy with a pharmacist on site move through a supply chain with licences and records; loose pills off a tray in traffic or an open drug market do not — and medicines stored in sun and rain lose potency even when genuine. A trusted seller lowers your risk; it does not authenticate the individual pack. Read a suspiciously low price as a question — “why?” — not a verdict.

Rung 4 — The code on the pack (the one check a clone cannot pass)

This is the only check that authenticates your individual pack rather than its artwork — which is exactly why a clone cannot defeat it. Many medicines (antimalarials and antibiotics first) carry a NAFDAC Mobile Authentication Service (MAS) scratch panel:

  1. Scratch the panel to reveal a one-time PIN that is unique to that single pack.
  2. Send the PIN free, using the short code printed on that pack.
  3. You get an instant reply — genuine or fake.

Why a clone can’t beat it: that PIN is a single, one-time code in a database. The first genuine buyer’s check consumes it; a second person texting the same cloned PIN gets a “used” or “fake” reply — and the counterfeiter cannot mint valid new PINs.

Use the code the pack tells you, because different makers use different providers. The flagship is Sproxil’s 38353 (SMS) — the one many Nigerians know — but you may also see 38351 (PharmaSecure), 38120 (UBQT), or 1393 (mPedigree), or a USSD code like *7204*PIN# (Chekkit). All are toll-free.

Two cautions: not every product has a panel yet, so its absence alone is not proof of a fake — but wherever a panel exists, use it, and favour brands that carry one. And a “fake” reply, or an already-scratched panel, is a hard stop.

Where this is going: a fingerprint on every pack

The scratch code was the first generation. In October 2024 NAFDAC published the Pharmaceutical Products (Traceability) Regulations, 2024, requiring every regulated medicine to carry a unique identifier on each pack — the GTIN, batch number, expiry, and a serial number unique to that individual pack — encoded in a GS1 DataMatrix 2D barcode. A counterfeiter can copy artwork and even one batch number, but a serial unique to every pack is a fingerprint: scan a duplicate, or a serial the system never issued, and it’s flagged.

The rails already exist — NAFDAC’s Traceability Information System and Scan2Verify app, 965+ scanners deployed, rolled out in phases (COVID-19, then HIV/TB/malaria, then a maternal-and-child-health pilot in 2025). And GS1 and Google are bringing DataMatrix scanning to ordinary phone cameras, so in time you will scan a pack yourself. It isn’t on your counter today — which is exactly why the scratch code above is still your best individual-pack check right now.

When in doubt, don’t take it

If a pack fails any check, or your gut says something is off, don’t take it — a missed dose is safer than a fake one. Then report it, so it’s pulled before the next buyer. (Note: the Greenbook is where you verify a drug — it isn’t where you report one.) NAFDAC’s free consumer channels:

  • Text PRASCOR — free — to 20543 (NAFDAC’s SMS alert line, all networks) with the product name and what’s wrong.
  • Use the free Med-Safety app (Android/iOS) to report with photos of the pack.
  • Or report online at nafdac.gov.ng, or at the nearest NAFDAC office — and tell the pharmacy you bought it from.

The pocket check

Chapter order was weakest-to-strongest so you’d understand why. But at the counter you act in reverse — strongest thing first, then fall back: Code → Trusted seller → NAFDAC number → Look → When in doubt, don’t. The golden rule: the code verifies, your eyes only screen.

This article is for information only and is not a diagnosis or a treatment plan. If you suspect a fake medicine, do not take it — report it to NAFDAC.

Sources: Mekonnen et al., “Prevalence of substandard, falsified, unlicensed and unregistered medicine… in Africa,” Journal of Pharmaceutical Policy and Practice (2024); World Health Organization — Global surveillance and monitoring report (December 2024); National Agency for Food and Drug Administration and Control (NAFDAC) — Greenbook, the Mobile Authentication Service, consumer complaint / PRASCOR & Med-Safety reporting, and the Pharmaceutical Products (Traceability) Regulations, 2024; GS1 Nigeria; Nairametrics (Sept 2025 seizure report).