Science Research Studies – Why Melanotan-1 and Melanotan-2 Are Unlicensed Medicines and Cannot Be Sold to the UK Public
Melanotan I and Melanotan II are still openly advertised by some UK peptide websites, social-media sellers, tanning businesses and private messaging groups. They are commonly presented as “research peptides,” tanning products, nasal sprays or injectable laboratory materials.
However, direct written correspondence received by BioPlex Peptides from the Medicines and Healthcare products Regulatory Agency confirms that Melanotan I and Melanotan II are treated as medicinal products and cannot lawfully be offered through unrestricted public retail sale.
Neither a “research use only” statement nor a “not for human consumption” label creates permission to sell these substances to ordinary customers. When a product is an unauthorised medicine, the restrictions covering its advertising, sale and supply still apply.
BioPlex removed Melanotan I and Melanotan II from public sale after receiving direct regulatory confirmation from the MHRA.
What Has the MHRA Confirmed?
BioPlex contacted the MHRA directly to establish the regulatory position regarding Melanotan I and Melanotan II.
The written response received by BioPlex confirmed that these substances fall within UK medicines regulation and cannot be sold to the general public as ordinary research peptides.
The central points are:
-
Melanotan I and Melanotan II are treated as medicinal products.
-
Products containing them are not authorised for unrestricted public sale.
-
They cannot legally be advertised and sold as ordinary tanning products.
-
Calling them research peptides does not override their medicinal classification.
-
Nasal sprays and injectable products remain subject to medicines regulation.
-
Supplying them for tanning or other human effects is illegal.
-
Ordinary public retail access must be removed.
This applies to products sold through conventional websites as well as social media, messaging services, tanning salons, gyms and informal seller networks.
Why Are Melanotan Products Classed as Medicines?
Melanotan peptides are biologically active substances associated with melanocortin-receptor activity. Products containing them are typically marketed to alter pigmentation or create a tanning effect by modifying physiological processes in the human body.
Under the Human Medicines Regulations 2012, a substance may be treated as a medicinal product when it is:
-
Presented as preventing or treating a disease or condition.
-
Used to restore, correct or modify a physiological function.
-
Pharmacologically, immunologically or metabolically active.
-
Advertised in a way that implies human administration or personal effects.
A seller cannot determine a product’s legal status merely by describing it as a cosmetic tanning aid, laboratory chemical or research peptide.
The MHRA may examine what the substance does, why customers are buying it and how the product is presented across the entire business.
“Research Use Only” Does Not Make Melanotan Legal
Some UK sellers offer Melanotan I or Melanotan II while displaying a laboratory-use disclaimer. At the same time, the same websites may refer to tanning, pigmentation, sun exposure, nasal administration, personal results or the amount of product required to produce an effect.
These conflicting messages are important.
The MHRA can consider:
-
Product descriptions.
-
Direct and indirect claims.
-
Before-and-after photographs.
-
Packaging and vial labels.
-
Nasal-spray presentation.
-
Reconstitution information.
-
Customer reviews.
-
Frequently asked questions.
-
Social-media content.
-
Tanning instructions.
-
Suggested personal-use schedules.
-
The type of customer permitted to buy the product.
A “research use only” statement cannot disguise a product that is clearly being marketed, purchased or supplied for tanning or another human physiological effect.
If any member of the public can purchase Melanotan through an ordinary checkout, the seller should not assume that a disclaimer makes the transaction lawful.
Nasal Sprays Are Not a Loophole
Melanotan II is frequently sold as a nasal tanning spray, sometimes using colourful packaging, flavour descriptions or cosmetic language.
Changing the delivery format does not remove the product from medicines regulation.
A nasal spray containing a pharmacologically active substance remains capable of being classified as a medicinal product. The MHRA can consider the ingredients, intended purpose, claims and expected method of use.
Describing a Melanotan nasal spray as:
-
A tanning aid.
-
A cosmetic spray.
-
A wellness product.
-
A laboratory solution.
-
A research nasal spray.
-
A non-injectable alternative.
does not automatically make its sale legal.
If the product is intended to produce a physiological tanning response in a person, its medicinal presentation remains clear.
Melanotan I and Afamelanotide Must Not Be Misrepresented
The name Melanotan I is sometimes connected with afamelanotide, a related melanocortin peptide that has been developed as a regulated medicine for a specific clinical purpose.
The existence of a regulated or authorised medicinal version does not permit peptide retailers to manufacture, repackage or sell unlicensed Melanotan I products to the public.
A legitimate medicine is supplied under defined manufacturing, prescribing, distribution and regulatory controls. An unlicensed vial purchased from a peptide website is not automatically equivalent to an authorised pharmaceutical product.
Sellers must not imply that the history or authorisation of a specific medicine gives their own unlicensed Melanotan I product regulatory approval.
Melanotan II Has No Ordinary Public-Sale Authorisation
Melanotan II is frequently advertised for tanning and sometimes for other personal physiological effects.
These uses demonstrate why the product is not an ordinary laboratory chemical when presented to public customers. The seller is offering a pharmacologically active substance for the purpose of modifying the human body.
Melanotan II products sold online may be supplied as:
-
Lyophilised injectable powder.
-
Premixed tanning solution.
-
Nasal spray.
-
Tanning kits.
-
Products bundled with syringes or reconstitution supplies.
-
Social-media “tanning packages.”
None of these formats creates a public-sale exemption.
Where Melanotan II is advertised or supplied for human use, it is being presented as an unauthorised medicine. Selling or advertising an unauthorised medicine to the public is illegal.
What Are the Safety Concerns?
Unlicensed Melanotan products have not undergone the regulatory assessment required to establish that a particular retail product meets approved standards of quality, safety and effectiveness.
Reported concerns associated with Melanotan products have included:
-
Nausea.
-
Facial flushing.
-
Appetite changes.
-
Changes in blood pressure.
-
Headaches.
-
Darkening or alteration of freckles and moles.
-
Unknown concentrations or incorrect ingredients.
-
Contamination and sterility concerns.
-
Risks associated with unregulated injections.
-
Possible exposure to blood-borne infections through unsafe injecting practices.
Reports of mole or pigmentation changes should not be converted into unsupported claims that Melanotan has been proven to cause a specific cancer. The more accurate point is that unlicensed products have uncertain contents, uncertain dosing and insufficient regulatory evidence to establish their safety.
An absence of complete evidence does not prove that an unlicensed product is safe.
Independent Testing Does Not Authorise Melanotan Sales
A certificate of analysis may provide information about the sample submitted to a laboratory. Depending on the analytical method, it may help assess identity, purity, molecular mass or the presence of specified substances.
However, laboratory testing does not:
-
Grant MHRA approval.
-
Provide a marketing authorisation.
-
Establish safety for human use.
-
Permit public medicinal advertising.
-
Make Melanotan legal to sell as a tanning product.
-
Turn a nasal spray into an authorised medicine.
-
Authorise direct-to-consumer supply.
A high reported purity result does not change the legal classification of the substance or create permission for public sale.
Testing and regulatory authorisation are separate matters.
Why Public Sale Is Different from Controlled Research Supply
Removal from public sale does not mean that scientific investigation into melanocortin peptides is prohibited in every legitimate research environment.
Universities, pharmaceutical developers and authorised laboratories may obtain controlled research materials through specialist institutional supply arrangements. Such arrangements can involve documented research purposes, organisational verification and relevant regulatory controls.
That is fundamentally different from:
-
Selling a tanning vial to any website visitor.
-
Allowing unrestricted consumer checkout.
-
Selling nasal sprays through social media.
-
Supplying Melanotan through tanning salons or gyms.
-
Advertising personal tanning outcomes.
-
Providing instructions for human administration.
-
Publishing customer reviews describing personal use.
Calling ordinary retail customers “researchers” does not create a genuine institutional research relationship.
Why BioPlex Removed Melanotan I and Melanotan II
BioPlex Peptides sought direct clarification from the MHRA and acted on the response received.
Melanotan I and Melanotan II were removed from public sale because maintaining ordinary retail listings would conflict with the regulatory position communicated to BioPlex.
This decision was not based on what competing peptide sellers chose to do. It was based on direct correspondence from the UK regulator responsible for medicines.
BioPlex will not knowingly continue offering a product to the public after being informed that its sale is restricted by medicines regulation.
A competitor continuing to list Melanotan does not prove that the sale is legal. It only proves that the product remains visible on that particular website.
A Warning to UK Sellers
UK businesses continuing to advertise or supply Melanotan I or Melanotan II should review their position immediately and obtain direct regulatory advice.
Changing a few words on a product page may not resolve the problem. Removing obvious tanning claims while continuing unrestricted public sale may not resolve it either.
The MHRA may consider the entire presentation, including:
-
Historic advertising.
-
Associated blog articles.
-
Customer reviews.
-
Social-media accounts.
-
Product images.
-
Nasal-spray packaging.
-
Tanning claims made by affiliates.
-
Administration information.
-
The overall customer journey.
Where Melanotan is being presented or supplied for human tanning, the product is being marketed as a medicine. Without the necessary authorisation, that public advertising and supply is illegal.
A Warning to Customers
Customers should be cautious when a seller claims that Melanotan is legal simply because the vial or nasal spray says “research use only.”
Ask the seller:
-
Has it contacted the MHRA about Melanotan specifically?
-
Can it provide written confirmation permitting public sale?
-
Does it hold the required medicines authorisation?
-
Why is a supposed laboratory product being sold as a nasal spray?
-
Why does the website mention tanning or pigmentation?
-
Are customer reviews describing personal use?
-
Is independent testing being misrepresented as regulatory approval?
A professional website, laboratory report or registered company number does not establish that every listed product is lawful.
Final Conclusion
Direct written correspondence received by BioPlex Peptides from the MHRA confirms that Melanotan I and Melanotan II are treated as medicinal products and cannot lawfully be offered through unrestricted public retail sale.
They cannot be made legal by adding “research use only” to a vial, packaging them as nasal sprays or removing a small number of obvious tanning claims.
Independent testing does not grant medicines authorisation. A foreign or specialist pharmaceutical approval does not authorise an unrelated UK peptide seller’s product. Continued availability on competitor websites is not evidence that public sale is lawful.
BioPlex removed Melanotan I and Melanotan II after obtaining direct clarification from the MHRA. UK sellers continuing to offer these products to ordinary customers should not assume that a disclaimer protects them from medicines law.
Continue Exploring...
Are Peptides Legal in the UK?
Read about MHRA rules, research use and BioPlex compliance ⟶
MHRA Compliance
View BioPlex Peptides MHRA compliance laws and research policies ⟶
Independent Peptide Testing
View BioPlex Peptides independent testing certificates and results ⟶
MHRA Product Classification
Read how the MHRA determines whether a product is a medicine ⟶
Report an Illegal Online Medicine Seller
View the MHRA service for reporting suspicious online medicine sales ⟶
All discussion is presented strictly for educational and scientific research purposes only, supporting informed study, data interpretation, and responsible laboratory investigation.
