Prices checked 11 Nov 2026 · 4 listings · 4 confirmed in stock · Thymic peptides
No priced listings with a stated quantity yet.
Each currency is shown separately; prices are never converted. Packs of several vials are compared per mg of the whole pack, apart from single vials.
Prices as listed on each store's site when last checked, 11 Nov 2026. Single vials only; packs and pens are compared separately below.
Median per mg
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Too few validated prices to publish
Highest per mg
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On sale now
3
of 3 stores tracked that list Thymulin in the UK
Median, 30 days
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A trend appears after a second day of validated prices
The highest-ranked stores by PepFinder Score are RETA LAB UK (6.7/10), Peptide Pro (6.1/10) and Zenterex (5.7/10). The lowest price per mg is at Peptide Pro. None of these stores has a certificate of analysis for Thymulin on file with us yet, so check each store's own site. Ranking is by PepFinder Score alone; nobody pays to appear here or to move up.
Regulatory status
In United Kingdom the regulator is the Medicines and Healthcare products Regulatory Agency (MHRA). Rules on buying, importing and using this product differ by country. Suppliers list it for laboratory research; nothing here is medical advice.
Suppliers 1–3 of 3 with listings on sale · prices in GBP only, never converted
78 products tracked · Ships to 1 country
| Listing as named | Size | Price | Per mg | Stock | |
|---|---|---|---|---|---|
| Thymulin 15mg | 15 mg | — | — | In stock | On their site ↗ |
Prices as last checked on their site. Packs are compared per mg of the whole pack. The supplier confirms the final price and availability.
132 products tracked · Delivery Delivery to the Republic of Ireland is estimated at 3–5 working days after dispatch, but courier and customs processing can affect timings. · Ships to 1 country
From £29.80/mg (5 mg vial)
| Listing as named | Size | Price | Per mg | Stock | |
|---|---|---|---|---|---|
| Thymulin 5 mg | 5 mg | £149.00 | £29.80/mg | In stock | On their site ↗ |
| Thymulin 5mg | 5 mg | £149.00 | £29.80/mg | In stock | On their site ↗ |
Prices as last checked on their site. Packs are compared per mg of the whole pack. The supplier confirms the final price and availability.
12 products tracked · Ships to 36 countries
| Listing as named | Size | Price | Per mg | Stock | |
|---|---|---|---|---|---|
| Thymulin | As listed | £34.99 | — | In stock | On their site ↗ |
Prices as last checked on their site. Packs are compared per mg of the whole pack. The supplier confirms the final price and availability.
Told when Thymulin gets cheaper in the UK
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At a glance · 11 Nov 2026
Thymulin is a natural nine-amino-acid hormone made only by the epithelial cells of the thymus, and it needs a zinc ion to be active. First isolated from pig serum in the 1970s as facteur thymique sérique (FTS), it was tested as a synthetic drug in rheumatoid arthritis and multiple sclerosis in the 1980s, is now studied mainly as an anti-inflammatory peptide in animals, and was identified in a 2026 Nature Communications paper as a circulating factor that restrains age-related inflammation. It is not an approved medicine anywhere. Read the full Thymulin guide, with the published research and references.
The median listed price per mg across every tracked supplier listing Thymulin in each currency, recorded daily from validated listings only. Days with too few listings to publish are left out, not estimated. How we validate prices
Catalogue changes, last 30 days
9 listings added · 2 withdrawn
Price per mg is only half the comparison. Check that the supplier publishes a certificate of analysis for the batch it is selling, ideally from an independent laboratory, and that the certificate confirms identity as well as purity: our guide on how to read a COA shows what to look for. A price far below the rest of the list is more often a warning than a bargain; peptide prices explained sets out why.
For what Thymulin is and what published studies have found, see our Thymulin guide. Handling questions are covered in how to store peptides, and the peptide calculator converts a vial size and water volume into concentration and syringe units. Rules on buying and importing differ by country: read are peptides legal in the UK? and see all suppliers serving the UK.
How to spot a fake peptide supplier explains each of these in more detail, and third-party peptide testing covers what independent results can and cannot prove.
Most research peptides are sold as freeze-dried (lyophilised) powder in sealed vials, which is mixed with a diluent such as bacteriostatic water before use in the lab. Some suppliers also sell pre-mixed solutions, nasal sprays or capsules under the same name. These are different products with different stability and dosing, so compare price per mg only between the same form, and check which form a listing is before comparing it with the rest of the table.
3 of the suppliers PepFinder tracks list Thymulin and are based in the UK. The highest rated are RETA LAB UK, Peptide Pro, Zenterex. The list on this page is ranked by PepFinder Score, which weighs reliability, delivery, pricing, support and customer reviews; stores shipping in from abroad are not included in the UK's prices; nobody pays to be included or to rank higher.
Peptide Pro lists the lowest validated single-vial price per mg in the UK, £29.80/mg for a 5 mg vial, as last checked on 11 Nov 2026. The cheapest listing is not automatically the best buy: weigh it against the store's PepFinder Score, its test certificates and its customer reviews, all shown on this page.
Suppliers on this page sell Thymulin in 5 mg vials. Most research peptides are sold as freeze-dried powder in sealed vials.
Most research peptides are not controlled drugs in the UK, but selling or supplying an unlicensed medicine is an offence under the Human Medicines Regulations 2012; growth hormone and HCG are Class C controlled drugs. Our page on whether peptides are legal in the UK sets out the rules with a link to every source. This is general information, not legal advice.
Non-controlled medicines can be imported for your own use without an import licence, but Border Force can seize quantities above reasonable personal use, and controlled drugs such as growth hormone and HCG cannot be posted to you from overseas. Each supplier on this page shows where it is based, so you can see whether an order would cross a border.
Ask for a certificate of analysis for the batch being sold, and check that it names the laboratory, the batch number and the test date, and that it confirms identity by mass spectrometry as well as purity by HPLC. PepFinder has not yet collected certificates for Thymulin from these suppliers, so check each supplier's own site.
How this list is built: suppliers appear because they list Thymulin on their own website, read by our catalogue checks; nobody pays to be included or to move up. Ranking is by PepFinder Score, with stores that have nothing on sale after those that do. Prices, sizes and stock are as each site listed them when checked and may have changed.