A new name in research peptides, landing in the UK
SerenQ Pharmaceuticals builds research peptides into sealed, pre-filled injection pens rather than lyophilised vials. No reconstitution, no bacteriostatic water, no guesswork with a syringe barrel. Dial the units you need, read them off the window, done.
SerenQ has appointed The Ped Shop as its exclusive UK stockist. Every pen sold here comes direct from the manufacturer, in sealed retail cartons, with a unique serial number and QR authenticity code on the label.
PT-141
Peptide Injection Pen SystemComposition & Dosing Guide
PT-141 10mg · 2 ml pen · 200 units| Units | Volume (ml) | PT-141 (mg) |
|---|---|---|
| 2 units | 0.02 ml | 0.10 mg |
| 4 units | 0.04 ml | 0.20 mg |
| 6 units | 0.06 ml | 0.30 mg |
| 8 units | 0.08 ml | 0.40 mg |
| 10 units | 0.10 ml | 0.50 mg |
| 12 units | 0.12 ml | 0.60 mg |
| 14 units | 0.14 ml | 0.70 mg |
| 16 units | 0.16 ml | 0.80 mg |
| 18 units | 0.18 ml | 0.90 mg |
| 20 units | 0.20 ml | 1.00 mg |
| … | … | … |
| 200 units | 2.00 ml (full pen) | 10.00 mg (total) |
Third Party Testing
Every SerenQ batch is sent for independent analysis before it goes on general sale. Purity and identity testing for this batch is currently with Analiza, and the certificate will be published on this page the moment it lands.
Check back here for the full certificate, or ask us and we will send it over as soon as it is released.
Serialised & QR Verified
Every SerenQ product carries a unique serial number and a QR code printed on the label. Scan it with any phone camera and you can independently confirm the pen is genuine SerenQ stock and check its batch details before you open the carton.
One code per pen. Each one can only be registered once, so a duplicate scan is an immediate red flag.
You can verify your SerenQ authenticity and view the latest HPLC at auth.seren-q.comAbout PT-141
PT-141, also called bremelanotide, is a synthetic seven amino acid peptide derived from melanotan II. It was originally investigated as a tanning agent, and the sexual arousal effects that dominate the literature today were first recorded as an unexpected finding during those early trials.
Mechanistically it is unlike the erectile drugs it gets compared to. Sildenafil and tadalafil act on the vasculature, inhibiting PDE5 so that blood flow to erectile tissue is easier to achieve and sustain. PT-141 does not touch that pathway at all. It is a melanocortin receptor agonist, acting on MC3R and MC4R in the central nervous system, which places its research squarely on desire rather than on plumbing.
That distinction is the reason it appears in the literature on hypoactive sexual desire disorder in women, where a vasodilator has nothing to act on. Bremelanotide holds an FDA approval in the United States under the brand name Vyleesi for that specific indication, administered by autoinjector. It has no UK medicines licence, and the material supplied here is not that product.
The pen format
PT-141 is one of the compounds where dose control matters most, because the gap between a research dose and the dose that causes nausea and flushing is narrow. A dial in 50mcg steps makes that gap navigable in a way a 100 unit insulin syringe does not.
- 10.00mg of PT-141 per pen, in solution and ready to use
- 1 unit = 50mcg. 10 units on the dial gives 500mcg
- 200 units in total, which works out at 20 full 500mcg draws per pen
- Dial and dose window let you set the exact amount and read it back before dispensing
- 4 screw on pen tips supplied, individually sealed, 32G 0.23 x 4mm
- Protective cap, clip and a rigid retail carton for storage and transport
- Batch number, expiry and serial printed directly on the pen barrel, not just the box
Handling and storage
- Store refrigerated at 2 to 8°C. Do not freeze
- Keep in the outer carton, away from direct light
- Short periods at room temperature during transit are expected and normal
- Use a fresh sealed tip for each dispense and dispose of tips in a sharps container
- Expiry 12/2027 on sealed, correctly stored stock
- Keep out of reach of children and animals
What is in the box
- 1 × SerenQ PT-141 10mg pre-filled injection pen
- 4 × sealed pen tips, 32G 0.23 x 4mm
- Serialised, QR coded retail carton
Choosing between PT-141, MT2 and the ED orals
These three get grouped together and they should not be. Sildenafil and tadalafil are PDE5 inhibitors: they work on blood flow, and they do nothing at all for interest. PT-141 is the mirror image, acting centrally on desire and doing nothing for the vasculature. If the issue is mechanical, a PDE5 inhibitor is the relevant compound. If the mechanism works but the interest is not there, it is not.
MT2 is the closer relative, and shares the melanocortin mechanism, which is why libido effects show up in MT2 reports as a side effect rather than the point. MT2 is selected for pigmentation; PT-141 has had the tanning activity largely bred out of it. Running MT2 for libido means accepting tanning you may not want, and running PT-141 for a tan will not work.
Guides that go deeper:
- PT-141 (Bremelanotide): desire, not blood flow
- Sildenafil vs tadalafil, and why ED appears on cycle
- Melanotan 2 (MT2): what it does and what it costs you
For research purposes only
This product is sold strictly as a laboratory research chemical. It is not a medicine, not a supplement and not a cosmetic. It is not for human or veterinary consumption, and it is not intended to diagnose, treat, cure or prevent any disease or condition.
PT-141 is not licensed as a medicinal product by the MHRA, the FDA or any other regulator. Nothing on this page should be read as medical advice, a recommendation, or a suggestion of use in humans or animals.
By purchasing you confirm you are 18 or over, that you are acquiring this product for legitimate laboratory research or analytical use only, and that you accept full responsibility for its safe handling, storage and lawful use under the regulations that apply where you are.
Quality pen great packaging. Reasonable price and very quick delivery. My go 2 store for all my products
View on Trustpilot⭐⭐⭐⭐⭐ Excellent service and fast delivery! This was my first time ordering from this company, and I was so pleased with the experience that I ordered from them again. Both times, the delivery was very quick, and the supplements were excellent quality. I’m really happy with the service and products and would happily recommend them. I will definitely order from them again!
View on TrustpilotLoving it so easy to do it is what it says it is so I’m very happy
View on TrustpilotPen work as it should, would be better if you could do 5mg in on dose
View on TrustpilotExcellent service, brilliant results "Customer service was first class. My wife has been using tirzepatide SerenQ and it's been brilliant. She's lost weight, and her mental clarity and physical appearance have improved. It's been amazing to have my happy wife back. Thank you!"
View on TrustpilotThe packaging was excellent and the pen is generally easy to use. However, I feel the injection button mechanism could be improved, as it feels slightly flimsy when pressing down to release the solution. The dial/turning function also feels like it could be made more durable and sturdy. It would be great to see more needle heads included as standard, or alternatively have the option to purchase additional needles directly through your website for convenience. Overall, a good product with some small areas that could be improved to enhance the user experience.
View on TrustpilotI’ll start by saying it works , the delivery was quick and faultless , the pen is easy to use once you get your head round dosing , I will be reordering, and have recommended to friends .
View on TrustpilotReviews are collected and hosted by Trustpilot. Showing the 12 most recent of 102.
