1 4

Pre-Filled Retatrutide Injection Pen

Retatrutide 20mg & 40mg (R&D Only)

Retatrutide 20mg & 40mg (R&D Only)

Strength :

Click 40mg to order 👆

£129.99 - £199.99
£129.99 - £199.99
Sale
Shipping calculated at checkout.

Research & Development purposes only

20MG - 8 week supply | 40MG - 16 week supply
Delivered in a pre-filled injection pen for simple, once-weekly use.

Each Retatrutide 20mg kit includes:
20mg Retatrutide pre-filled injection pen
Microfine needles for injection
Patient information leaflet

Total: 20mg per pen
Each full dose 60 clicks
contains 5mg,
30 clicks on dose indicator contains 2.5mg Retatrutide.

Delivery: Tracked 1-2 DAY UK Delivery. Dispatched from a delivery centre that keeps our products stored in a fridge. 

Once Weekly Dosing Plan:
Starter Dose 4 weeks at 2.5mg
Weeks 5–8 at 5mg
Weeks 9–13 at7.5mg
Weeks 14–18 at 10mg
Research & Development purposes only

  • 20mg or 40mg Retatrutide pre-filled injection pen
  • 12x Microfine needles for injection
  • Patient information leaflet

Delivery: Dispatched from a delivery centre that keeps our products stored in a fridge. 

Once Weekly Dosing Plan:

Starter Dose 4 weeks at 2.5mg
Weeks 5–8 at 5mg
Weeks 9–13 at7.5mg
Weeks 14–18 at 10mg

Research & Development purposes only.

Certificate Of Analysis: 
https://drive.google.com/file/d/163qAWpxxqW2AGcg04a8cpgUaBM5QPF4E/view?usp=sharing

View full details

Real People, Result Results

Video thumbnail
Video thumbnail
Video thumbnail
Video thumbnail
Video thumbnail
×

What's Included?

  • 1x

    20mg/40mg Retatrutide pre-filled pen.

  • 12x

    Microfine Needles For Injection

  • 1x

    Patient Information Leaflet

Be sure to store correctly once opened

  • Keep unused pens refrigerated at 2–8°C until needed.
  • Once opened, you can store the pen at room temperature (max 30°C) but recommend always to store in a fridge, when not in use.
  • Always recap the pen and remove the needle after each use.
  • Never reuse needles or store the pen with a needle attached — this can lead to leaks or air entering the pen.
  • Dispose of used needles in a proper sharps containers.

Frequently Asked Questions

Are Retagenix products compliant with UK regulations?

Yes. Retagenix products are manufactured and distributed in line with current UK guidelines for research peptides and supplements. Each batch is evaluated for purity and consistency by Retagenix Labs.

Are refunds allowed?

For safety reasons, we cannot accept returns once products have left our facility. However, if your order arrives damaged or incorrect, please contact our support team on either Telegram or Retagenix@gmail.com within for assistance.

How do I calculate the correct dosage?

Each product comes with clear usage guidelines. For the best results and safety, always follow the instructions provided and consult a healthcare professional if unsure.

How long does delivery take?

Orders are typically processed within 24 hours. Next day shipping takes another 24 hours. So your order should be with you within 2 working days.

Do you ship internationally?

Yes, we ship to most countries worldwide. Please check local import regulations before placing an order.


Can I order in bulk for wholesale?

Yes. We offer wholesale pricing for clinics, researchers, and distributors. Please reach out to our wholesale team for details.


When will I start seeing results?

Results vary depending on the individual, dosage, and lifestyle factors. Many customers report noticeable changes within the first few weeks of consistent use.


Safety Disclaimer

Our peptides are exclusively intended for research purposes.