Advertising Medical Devices Through Influencers: What's Different From the Pharma Rules

Short answer: devices can be advertised, but the rules are different from medicine

In influencer marketing in regulated industries, we cover how prescription medicine can't be advertised to consumers at all, on any channel. Medical devices sit under a different rulebook: the EU's Medical Device Regulation (MDR, Regulation (EU) 2017/745, fully applicable since 26 May 2021) doesn't ban advertising devices to the public. Instead, it sets requirements on the content of the advertising — and one point most brands miss: the marketing itself can help determine whether a product is legally treated as a medical device in the first place.

This is practical guidance from Make Influence, not legal advice. Use it to get an overview — get the specific classification and assessment of your product and marketing copy from a regulatory consultant or lawyer, particularly if the product sits in a gray zone.

What legally counts as a "medical device"?

MDR Article 2(1) defines a medical device broadly: any instrument, apparatus, appliance, software, implant or other article that the manufacturer intends to be used for, among other things, diagnosis, prevention, monitoring, treatment or alleviation of disease or injury — or investigation of a physiological process. The definition covers everything from a simple thermometer to an advanced pacemaker, and it excludes products whose primary action is achieved pharmacologically, immunologically or metabolically (that makes them medicines instead, as covered in influencer marketing in regulated industries).

Risk classes and CE marking

Medical devices are split into four risk classes — Class I (lowest risk), IIa, IIb and III (highest risk) — depending on how invasive and risky the product is. Every medical device, regardless of class, has to carry a CE mark before it can be sold in the EU, and from Class IIa upward, a notified body has to approve the documentation before the mark can be applied. The CE mark itself isn't a general quality stamp — it's a direct consequence of the product having been assessed as a medical device and having passed the mandatory conformity assessment for its class.

The point that matters most for an influencer campaign: marketing itself helps decide the classification

MDR Article 2(12) defines "intended purpose" as the use for which a product is intended according to the data supplied by the manufacturer on the label, in the instructions for use, or in promotional or sales materials or statements, and as specified in the clinical evaluation. That's a precise, sourceable definition — and it means something concrete for an influencer campaign: promotional and sales material is explicitly named as one of the sources that determines what a product is legally considered to be for. A product a manufacturer registers as a general wellness item with no medical purpose can, in practice, be pulled closer to a medical classification if the campaign the company itself commissioned or approved consistently ascribes it a diagnostic or treatment-related property.

That's Make Influence's own reading of the provision's wording, not a report of a specific Danish or European enforcement case aimed at influencer marketing — we haven't found a published case where an influencer's wording alone triggered a product's reclassification. But the mechanism in Article 2(12) itself isn't in dispute: it names promotional and sales material on the same footing as labelling and instructions for use. A brief for an influencer working with a product in one of the gray-zone categories below should be treated with the same care as the product's own packaging copy.

What does MDR Article 7 specifically prohibit?

Once a product is — or is treated as — a medical device, MDR Article 7 prohibits four specific types of misleading claim in labelling, instructions for use and advertising:

1. Ascribing functions and properties to the device which it does not have.
2. Creating a false impression regarding treatment or diagnosis, or of functions or properties the device does not have.
3. Failing to inform the user or patient of a likely risk associated with using the device in line with its intended purpose.
4. Suggesting uses for the device other than those stated to form part of the intended purpose for which the conformity assessment was carried out.

What matters most for an influencer campaign is point 4: if an influencer describes the product as suited to something the approved intended purpose doesn't cover — for example, calling a general sleep-tracking product a diagnostic tool for sleep apnea — that's an Article 7 breach in itself, regardless of whether the claim happens to be factually accurate.

Comparison: medical devices vs. medicine in influencer marketing

Question	Prescription medicine	OTC medicine	Medical device
Can it be advertised to consumers?	No, never	Yes, with balance and content requirements	Yes — no consumer-facing ban, only content requirements
Legal basis	Executive order on advertising for medicines	Same executive order	Executive order on advertising for medical devices (2022/715) + MDR Article 7
Enforcement authority	Lægemiddelstyrelsen	Lægemiddelstyrelsen	Lægemiddelstyrelsen (yes, the same authority)
Specific risk from marketing copy	No classification risk — already a medicine	Same	The marketing itself can help trigger device classification, per Article 2(12) above

Danish enforcement: Lægemiddelstyrelsen and the executive order on advertising for medical devices

It's often overlooked that Lægemiddelstyrelsen (literally, the Danish "Medicines Agency") — despite the name — also supervises medical devices, not just medicine. Under the agency's own executive order on advertising for medical devices (executive order no. 715 of 2 June 2022), advertising for a medical device must be "comprehensive and factual" ("fyldestgørende og saglig"), and the information must be consistent with the device's purpose and field of use, and be capable of being documented. The ad can't contain untrue, misleading, exaggerated or deficient information. Lægemiddelstyrelsen's own guidance no. 9469 of 25 June 2024 on advertising for medical devices elaborates the definitions, rules and prohibitions in the executive order.

A special rule: economic benefits to healthcare professionals

One rule with no parallel in the general ad-disclosure rules applies specifically if a campaign involves a healthcare-professional creator — a nurse or doctor influencer, for example. Under the executive order, no economic benefit may be given or offered to healthcare professionals for advertising purposes or to otherwise promote the sale of a medical device. That prohibition doesn't cover discounts on the device itself, gifts of insignificant value that can be used in the recipient's profession, or lending devices to healthcare professionals for demonstration for up to two months. A campaign aimed at an ordinary consumer influencer isn't touched by this rule — but it becomes relevant the moment a collaborator is actually a licensed healthcare professional.

Product categories that often land in the gray zone

Classification always depends on the specific product's own documentation — none of the categories below are automatically medical devices. But they're categories worth asking the question about before a campaign is planned:

• Wearables with diagnostic functions. A watch or ring that tracks pulse or sleep generally is typically not a medical device — but a specific feature marketed to detect a concrete condition (say, an irregular heart rhythm) can be, even if the rest of the product isn't.
• At-home tests. A test intended to give a diagnostic or health-related result at home typically falls under the IVDR (the In Vitro Diagnostic Regulation), a sister regulation to the MDR with its own classification.
• Red/blue-light devices for skin. This is where the line runs into a completely different rulebook: a product that only affects the skin's appearance (cleansing, care, beautifying) is cosmetic and falls under the EU's Cosmetics Regulation — see substantiating skincare and beauty claims. A product marketed to treat a skin condition such as acne, by contrast, is pulled toward medical device classification.
• Posture and TENS devices. A device marketed to relieve a muscle or nerve condition is typically a medical device, while a general "train your posture" product with no disease-related claim typically isn't.

Decision framework

IF the product is already registered and CE-marked as a medical device → keep every claim the influencer makes within the approved intended purpose — give written, specific wording, the same way you would for dietary-supplement claims.

IF the product is registered as a general wellness item with no medical purpose → avoid diagnosis-, treatment- or disease-related wording in the brief, no matter how naturally that wording would fit an influencer's content.

IF the product falls into one of the gray-zone categories above → get the classification question resolved with your regulatory function before the campaign is planned — not after it's already live.

IF a collaborator is a licensed healthcare professional → check the special rule on economic benefits to healthcare professionals above before agreeing on product, payment or loan terms.

Hypothetical example (illustrative, not a real Make Influence customer)

The example below is invented and purely illustrative.

A brand sells a sleep ring registered as a general wellness product — the manufacturer's own documentation only mentions "tracking sleep patterns for personal use," no diagnostic claim. The brand briefs ten influencers to "share their sleep data and personal experience." One influencer writes in a Story: "the ring diagnosed my sleep apnea before I even knew I had it." That wording isn't just imprecise marketing copy — it ascribes the product a diagnostic property (Article 7, points 1 and 2), and because the content is part of a brand-approved campaign, the claim itself, under Article 2(12), can pull the product's intended purpose toward something the manufacturer's own documentation never claimed or was approved for.

Common mistakes

• Assuming the rules only concern the product's own packaging. Article 2(12) explicitly makes promotional and sales material part of the basis for a product's legal purpose.
• Confusing "not banned from being advertised" with "no special rules." The absence of a consumer ban (unlike prescription medicine) isn't the same as the absence of rules — Article 7's four prohibitions still apply.
• Overlooking that Lægemiddelstyrelsen also supervises devices. The name makes it easy for brands to assume the agency only deals with medicine.
• Giving a healthcare-professional creator product or payment without checking the special rule on economic benefits to healthcare professionals.

Make Influence's perspective

In our experience, the biggest risk in medical-device campaigns isn't the product's own classification — that's usually already settled by the manufacturer — it's the wording an influencer improvises in a story or post without knowing the product's actual, approved intended purpose. Our clear recommendation is to treat the intended purpose on the same footing as the approved claims in a dietary-supplement campaign: write the specific, permitted wording into the brief as a fixed item, rather than leaving it to the influencer's own judgment.

FAQ

Does an influencer campaign for a medical device also need to be marked as an ad?

Yes — that's a completely separate duty. The MDR and the executive order on advertising for medical devices govern the content of the claims. Whether the audience can tell the post is paid is governed by the general rules. See influencer marketing disclosure rules in Denmark and the EU.

Are dietary supplements and medical devices subject to the same rules?

No — two entirely separate regimes. Dietary supplements are legally food and are regulated by the EU's Claims Regulation, while medical devices are regulated by the MDR. A product can in theory be misclassified the wrong way in either direction. See dietary supplements and influencer marketing for the parallel rulebook.

Can a product be both cosmetic and a medical device at the same time?

No, the classifications are mutually exclusive for the same intended purpose — but the line can be unclear for products like light-therapy masks, where the deciding factor is whether the claimed effect is cosmetic (appearance) or treatment-related (a specific skin condition). See substantiating skincare and beauty claims for the cosmetics rules specifically.

Do these rules apply to the injector pen for a medicine like Ozempic or Wegovy?

Not usually separately — an injector pen sold integrated with the medicine is generally regulated as part of the medicine itself, not as a standalone medical device. The medicine itself is in any case subject to the far stricter consumer ban on medicine advertising. See can an influencer legally promote weight-loss drugs like Ozempic or Wegovy in Denmark? for that regime.

Does it still count if the brand hasn't approved the influencer's specific wording?

Article 2(12) refers to the manufacturer's own promotional and sales material — so a fully unauthorized, independent wording by an influencer in an unpaid post stands on legally weaker ground as a basis for reclassification than a brand-approved campaign. But Article 7's ban on misleading claims in "advertising" for a device reaches broadly, and a brand-paid or brand-approved campaign — which most influencer collaborations are — sits clearly within the provision's scope.

Is there a difference between the EU rules and the Danish rules here?

The MDR is an EU regulation that applies directly in Denmark with no national implementation needed. The Danish executive order on advertising for medical devices supplements it with concrete Danish requirements on how factual the advertising must be and Lægemiddelstyrelsen's supervisory authority — both rulebooks apply at the same time.

Should the contract with an influencer working with a medical device cover anything special?

Yes — a written, specific list of the approved intended purpose and permitted wording, on the same footing as the other items a contract should cover. See what to put in an influencer contract for the full checklist.