Marketplace and social media scam patterns

The baseline truth

Selling prescription-only medicines (Wegovy, Ozempic, Mounjaro, Saxenda) on Facebook Marketplace, eBay, Gumtree, or via peer-to-peer DMs is unlawful under the Human Medicines Regulations 2012. The legitimacy bar is therefore zero regardless of how the listing looks. The question is only: what kind of loss is the scam going to extract?

Pattern 1 — Pay-and-disappear

Listing offers GLP-1 pens at attractive prices. Buyer pays. Seller goes silent. No product arrives. The seller’s account is fresh, has minimal history, and gets deactivated shortly after collecting payments.

Spot it: account age <30 days, listing location ‘UK’ but no specific area, no previous buyer feedback, payment routes outside platform protection (bank transfer, crypto, gift cards).

Pattern 2 — Fake product, real branding

Listing offers GLP-1 pens that look like genuine Wegovy / Ozempic / Mounjaro. Buyer pays, receives a parcel containing a real-looking pen that is in fact a counterfeit. Identifiable on close inspection (missing or wrong-language PIL, mismatched batch numbers, printing quality, different pen mechanism) but easy to miss for a first-time buyer.

Spot it: price meaningfully below the genuine private market; listing offers ‘sealed in original box’ but the photo shows packaging that doesn’t match Novo Nordisk or Eli Lilly branding; seller has multiple identical listings.

Pattern 3 — Genuine product, dodgy chain-of-custody

Sometimes the product itself is real — ex-prescription pens unused after a patient stopped, surplus from a clinic, imported via a personal-import route. Even where the medicine is real, the chain-of-custody breaks pharmacy traceability, you don’t know the storage history (cold chain), and buying without a prescription is unlawful for both you and the seller.

Spot it: seller claims to be a patient with ‘extra’ pens, or a clinic with ‘surplus’. Even if true, the regulated supply chain is what protects you when something goes wrong.

Pattern 4 — Insulin-substituted pen

Pen presented as semaglutide or tirzepatide actually contains insulin (cheaper to produce, looks visually similar in solution). Buyer injects expecting weight-loss effect and gets acute hypoglycaemia. Documented counterfeit-supply pattern.

Spot it: price extremely below market, pen with non-Novo-Nordisk / non-Lilly mechanism, no PIL, generic packaging.

Pattern 5 — Bait-and-switch listing

Listing photo shows genuine product. Conversation moved off platform (‘DM me on Snapchat’). Once off-platform, the actual product offered changes — ‘compounded equivalent’, ‘research-grade vials’, ‘same active ingredient at half the price’. The platform-visible listing was bait.

Spot it: reluctance to discuss product details on-platform; quick push to private messaging; product available changes between listing and DM.

Pattern 6 — Affiliate-funnel listing

Marketplace listing is actually a referral funnel to an off-platform clinic / website. Buyer thinks they’re buying from an individual but is being walked into a conversion funnel for a different (often unlicensed) supplier. The listing seller gets a commission.

Spot it: listing copy is generic and marketing-style; ‘DM for trusted supplier link’; pushy recommendations of a specific external site.

Pattern 7 — ‘Group buy’ coordination

Group chat (Telegram, WhatsApp, Facebook private group) coordinates a bulk order from an overseas supplier. Individual buyers send money to a designated organiser. Either the organiser pockets the lot, or the order arrives and is counterfeit, or the order is seized at customs and refund policy is ‘sorry’.

Spot it: any coordinated bulk-buying arrangement that bypasses individual prescription supply.

Pattern 8 — Romance / lifestyle funnel

Long-running social-media account builds parasocial trust (fitness lifestyle, weight-loss journey, before-and-after content) over months. Then introduces the ‘peptide protocol that changed my life’ with a discount code or DM-for-supplier path. The persona is the marketing; the product underneath is usually unlicensed.

Spot it: account is heavily personal-narrative first; product introduction comes after trust building; the ‘supplier’ is gatekept (‘I’ll only share with serious people, DM me’).

What to do if you’ve been scammed

1. Don’t inject anything received. Whatever it is, the regulated supply chain isn’t there to back it up.
2. Report to the platform. Facebook / Instagram / TikTok / eBay / Gumtree all have prohibited-goods and scam reporting flows.
3. Report to Action Fraud at actionfraud.police.uk. You’ll get a crime reference number you can use with your bank for a payment dispute.
4. Dispute the payment with your bank or card issuer. Chargeback rights apply to card payments. Bank transfers may qualify for reimbursement under the APP fraud voluntary code.
5. Report to MHRA via the GOV.UK report-a-problem form and Yellow Card for any received product.