Retaklik Research Kit
£179.99
The Retaklik Research Kit is a pre-filled laboratory presentation of retatrutide, a multi-receptor investigational compound studied for GLP-1, GIP and glucagon receptor pathway ...
Strength
Store in the fridge at 2–8°C. Protect from light.
All orders are shipped with Royal Mail Special Delivery Guaranteed by 1pm. Order before 4pm (working days) for same-day dispatch.
For laboratory research purposes only. Not for human or veterinary use. Purchasers are responsible for ensuring compliance with applicable laws and regulations.
The Retaklik Research Kit is a pre-filled laboratory presentation of retatrutide, a multi-receptor investigational compound studied for GLP-1, GIP and glucagon receptor pathway research. Each Retaklik research kit is supplied as a sealed Apex pen with clear labelling, batch identification and independent lab testing, ready for controlled laboratory and R&D use.
Available strengths
Retaklik is offered in three research presentations so you can match the kit to the scale of your project:
- 20mg – suited to pilot work, method development and first evaluations.
- 40mg – the most popular mid-range presentation for ongoing laboratory projects.
- 60mg – the highest-strength format and the lowest price per milligram in the range.
Need a single mid-strength option instead? The 45mg Retaklik 2.0 pen sits between the 40mg and 60mg presentations.
Independent lab results
Retaklik batches are tested by Janoshik Analytical, an independent third-party laboratory. Every report is hosted on Janoshik's own verification site, so you can check it yourself.
| Strength | Batch | Purity | Report |
|---|---|---|---|
| 20mg | 001/26 | 99.071% | #105303 |
| 40mg | 002/26 | 99.278% | #105306 |
| 40mg | 6/2026 | 99.029% (blind test) | #204875 |
| 40mg sterility | 6/2026 | TAMC and TYMC pass | #209466 |
| 60mg | 003/26 | 99.452% | #105307 |
For a plain-English guide to purity, concentration, blind testing and sterility results, read our guide to Janoshik peptide testing.
Why a pre-filled research pen?
Traditional research peptides arrive as freeze-dried powder that has to be reconstituted before use. A Retaklik pen arrives with the material already in solution at a fixed, labelled strength. That removes the mixing step, reduces handling and transfers between containers, and keeps the product name, strength and batch number on the pen itself for easier record keeping. Our article on research pens compared with peptide vials covers the differences in more detail.
What's included
- Sealed, pre-filled Retaklik research pen in your chosen strength
- Clear product labelling and research-use-only marking
- Batch identification for traceability
- Storage guidance and supporting documentation
Storage and handling
Store the Retaklik research kit refrigerated at 2–8°C and protect it from direct light. Do not freeze unless your batch documentation states otherwise. Place it in the fridge as soon as your parcel arrives and handle it only in a suitable laboratory environment, following your institution's procedures for research materials.
Delivery
UK orders ship with Royal Mail Special Delivery Guaranteed by 1pm, and orders placed before 4pm on working days are dispatched the same day in discreet, tracked packaging. Orders over £200 ship free, and new customers can use code FIRST10 for 10% off their first order.
Frequently asked questions
Which Retaklik strength should I choose?
Choose 20mg for pilot or first-time evaluation, 40mg for most ongoing projects, and 60mg if you want the highest strength and best value per milligram. Our Retaklik vs Retaklik 2.0 comparison explains the options side by side.
Is Retaklik independently tested?
Yes. Janoshik reports are published for the 20mg, 40mg and 60mg presentations, with every result above 99% purity and a sterility pass on the 40mg batch.
Can Retaklik be used on humans or animals?
No. Retaklik is supplied strictly for laboratory research and is not intended for human or veterinary use.
For laboratory research purposes only. Not intended for human consumption, medical use, diagnosis, treatment, cure, or prevention of any disease. Purchasers are responsible for ensuring compliance with all applicable laws and regulations.
