Selank Side Effects: What the Limited Data Show

The MHRA seized 28.5 million doses of illegally traded medicines in a single year, worth an estimated £64.4 million, and it warns that products from unregulated sources have unknown contents, manufacturing quality and handling. For selank side effects, that warning is as relevant as anything in the research, because the data on selank itself are thin.

This page sets out what can and cannot be said, and what to do if you have a reaction. It is not medical advice.

No UK safety assessment exists

No authority in the UK has evaluated the safety of the drug selank. Because the drug is not licensed in the UK, there are no UK patient leaflets, UK product information or MHRA assessment of its side effects.

This absence is important. In the case of an internet search of selank side effects, most people look for something like the medicine leaflet. However, in the case of the UK selank, the absence of such list which is approved by the proper authority shows that all lists existing on the internet are just someone’s opinions.

In Russia, Selank is registered as medication in the form of a nasal drop and the registration is held in Russia. The information provided for Selank in Russia refers solely to the registered product, which does not have MHRA approval. Therefore, it should not be seen as an indication of what the research-marked product bought through the internet is supposed to do.

Why the data are limited

Selank research is primarily Russian, and it tends to focus on anxiety and cognition. For the UK audience, the side-effect information in that literature is difficult to verify, and there’s no voluminous review of controlled trials carried out by UK or US regulatory authorities.

• Small or older studies may not pick up uncommon effects.
• Effects over longer periods are poorly described in sources available in English.
• Interactions with other medicines have not been assessed by any UK body.

So the honest summary of selank side effects is that the risk profile is largely unknown, not that it is clean. The selank peptide page covers what the research does include.

The product may be a bigger risk than the peptide

products purchased over the internet, uncertainty regarding what they contain can be more important than the characteristics of the substance. According to the MHRA, a product labeled as "for research use only" does not imply that it has been made to standards applicable to medicines.

With products manufactured out of compliance with pharmaceutical manifold there are several dangers such as contamination, undesirable components, and incorrect storage. None of those errors can be detected from the labels and, therefore, a symptom appearing after the use of pharmacological substance may not be the effect of this substance itself.

The vendor we mention claims that their goods are lab-tested. That’s just the beginning and not entirely enough to rely upon. A lot-specific certificate that corresponds to the batch of the product you bought is better than a vague statement of the vendor.

A blend adds a second unknown

Selank is sold exclusively by Peptide God in combination with Semax at a price of $59.95 (USD). Any response to the blend may stem from one of the two peptides used in the product, the solvent they are mixed in, or impurities that may have occurred during production and cannot be determined unless the product is laboratory tested.

Semax is also unlicensed in the UK, with a mostly Russian evidence base. The blend page explains the fixed ratio and what the listing does and does not state, and the selank vs semax comparison covers the second compound.

Reporting a reaction and getting help

If you think you are suffering from a side effect linked to a product, including an unlicensed product, you can report it to the MHRA using the Yellow Card scheme. Reporting serves to alert the authorities of any issues with products available in the UK.

Provide as many details as possible when there are issues: the name of the product, the name of the supplier, the batch or lot number, and when something went wrong. In case of a mixture, make this clear; otherwise, the report will be interpreted in reference to a specific compound.

If you feel unwell, contact your GP or call NHS 111, and in an emergency call 999. Take the product packaging with you if you can, so clinicians can see what was in it.

If you take prescribed medicines, are pregnant or breastfeeding, or have a long-term condition, speak to your GP or pharmacist before considering any unlicensed compound. We explain on the selank dosage page why this site prints no usage figures.