Triple-receptor research peptide

Retatrutide 40mg (R&D Only)

Triple agonist of GLP-1, GIP and Glucagon receptors — supplied in a pre-filled research device for controlled laboratory R&D applications.

8 week supply

£149.99

+ Tracked 1–2 day UK delivery · Dispatched with cold pack

🔒 Secure Checkout
🧪 HPLC Verified
🚚 UK Dispatch 1–2 Days
📦 Discreet Packaging
COA Available
Save 5% with crypto

Choose Bitcoin or USDT at checkout for an automatic discount.

R&D only: Produced for laboratory research purposes only. Not for human or veterinary consumption.

Each kit includes

  • 1 pre-filled research pen (4 × 10 mg doses)
  • 12 disposable needles
  • 1 instruction booklet
  • Research information sheet

Research-Grade Retatrutide 40mg

A 40mg Retatrutide formulation supplied in a pre-filled research device, provided exclusively for controlled laboratory R&D applications. Delivered in sealed format to support compound stability analysis, formulation studies, and delivery mechanism evaluation.

Retatrutide is a triple receptor agonist targeting GLP-1, GIP, and glucagon receptors simultaneously — making it one of the most studied next-generation research peptides in metabolic science.

Why researchers choose this kit

  • Pre-filled pen format for delivery mechanism evaluation
  • Verified purity via HPLC and Mass Spectrometry
  • Batch-specific COA available on request
  • Controlled handling and stable sealed format
  • Consistent quality guaranteed across batches

What happens after you order

1
Add to Cart

Select your product and quantity

2
Checkout

Pay securely via bank transfer or crypto

3
Confirmation

Order confirmed instantly by email

4
Dispatch

Prepared with cold pack & tracking

5
Delivery

Tracked 1–2 day UK delivery

Product Information

Product NameRetatrutide 40mg (R&D Only)
Quantity1 pre-filled pen — 40mg total (4 × 10mg doses)
MechanismTriple agonist — GLP-1, GIP & Glucagon receptors
FormatPre-filled research device, sealed
PurityHigh research-grade purity (HPLC verified)
Supply Duration8 weeks (research protocol dependent)
FrequencyOnce weekly (research protocol dependent)
Intended UseLaboratory and scientific research only

Certificate of Analysis (COA): Batch-specific purity report — HPLC & Mass Spectrometry verified. Request COA

R&D reference only: The information below describes research device handling for controlled laboratory and scientific R&D applications. It is not medical advice and is not intended for human consumption, self-administration, clinical use, or veterinary application. Qualified researchers must follow their institution’s approved protocols and all applicable regulations.

How to Use Your Retatrutide Research Injection Pen

The following steps describe standard operation of the pre-filled research device for delivery mechanism evaluation in controlled laboratory settings.

Step 1: Wash Your Hands

Thoroughly clean your hands with soap and water to ensure a sterile environment before handling the pen or needle.

Step 2: Prepare the Pen

Remove the pen cap and check the medication. Ensure the solution is clear and free of particles. Select a new needle and peel off the paper tab.

Step 3: Attach the Needle

Align the needle with the top of the pen and twist it on firmly until secure. This ensures a proper seal for safe device operation.

Step 4: Prime the Pen

Turn the dose knob to select a small dose (as instructed in your research protocol). Hold the pen upright and press the injection button to release air bubbles and prepare the flow.

Step 5: Select Your Dose

Use the dose knob to select the correct dose as specified in your research protocol. Confirm the dose is visible in the dose window.

Step 6: Choose an Application Site

For research device evaluation, standard reference sites include the stomach (at least 2 inches from the belly button), thigh, or back of the upper arm. Rotate application sites weekly as per protocol.

Step 7: Deliver the Dose

Insert the needle at a 90-degree angle. Press the injection button fully and hold for 5–10 seconds to ensure the full dose is delivered. Then, carefully remove and discard the needle in a sharps container following laboratory disposal protocols.

How to Dose

When initiating a Retatrutide research protocol, a gradual dosing plan is typically used in published studies to assess compound response over time. The schedule below is provided as a reference research protocol only — not as guidance for personal use.

Recommended Research Dosing Schedule

Weeks 1–42.5mg once weekly
Weeks 5–85mg once weekly
Weeks 9–127.5mg once weekly
Weeks 13 onward10mg once weekly

Protocol progression may be adjusted based on observed research parameters. If response indicators remain stable at a lower dose (e.g. 2.5mg), that dose level may be maintained longer (e.g. 6+ weeks) before advancing to the next tier. Increase dose levels only when protocol criteria indicate progression is required.

Dose by Clicks (Dial Setting)

2.5mgTurn the dial 15 clicks
5mgTurn dial to 30 clicks
7.5mgTurn dial to 45 clicks
10mgTurn dial to 60 clicks

Research protocols typically specify once-weekly administration on the same day each week. Always confirm the correct dose is shown in the pen’s display window before proceeding.

Tips for Best Use

Laboratory handling recommendations for research device operation, dosing, and storage.

Using the Pen

  • Always prime the pen before the first dose by releasing a small amount into the air.
  • Use a new needle for every session to avoid contamination and clogged flow.
  • Operate the device slowly and hold the button down for at least 5 seconds to ensure full delivery.
  • Rotate application sites weekly (stomach, thigh, or back of upper arm) to reduce skin irritation during device evaluation.
  • Press gently with gauze after delivery, but do not rub the area.

Dosing Smartly

  • Begin at 2.5mg and advance gradually only when protocol requires.
  • If research parameters remain stable at the current dose, maintain that level longer before increasing.
  • Dial reference: 15 clicks = 2.5mg · 30 clicks = 5mg · 45 clicks = 7.5mg · 60 clicks = 10mg
  • Keep a log of dose settings and dates, especially during protocol adjustments.

Storage & Handling

  • Keep unused pens refrigerated at 2–8°C until needed.
  • Once opened, the pen may be stored at room temperature (max 30°C) but refrigeration is recommended when not in active 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 container per laboratory protocol.
Keep out of reach of children. For disposal guidance or research enquiries, contact us via the contact form.
R&D only: Storage guidance for laboratory research compounds. Not intended for human or veterinary use.

How to Store

To maintain compound stability and device integrity for research purposes, store your SlimShot Retatrutide pen according to the following guidelines:

Before First Use

  • Store in the refrigerator at 2°C to 8°C
  • Keep the pen in its original packaging to protect from light
  • Do not freeze the pen. If frozen, it must be discarded

After First Use

  • You may store the used pen at room temperature (up to 15°C) for up to 4 hours during active research sessions
  • Keep away from direct heat, sunlight, and moisture
  • Always replace the pen cap after each use to prevent air exposure or leakage
  • Do not store with the needle attached

Keep out of reach of children. For disposal guidance or research enquiries, contact us via the contact form.

Handle only in controlled laboratory conditions. Follow your institution’s biosafety and sharps disposal protocols.

Shipping & Delivery

UK1–2 business days — tracked & discreetly packaged with cold pack
EU3–7 business days
USA / Canada5–10 business days
Australia & Rest of World7–14 business days

All orders are securely and discreetly packaged with no external branding identifying the contents. A tracking number is issued with every order.

Frequently Asked Questions

What does the 40mg kit include?

One pre-filled research pen containing 40mg Retatrutide (4 × 10mg doses), 12 disposable needles, an instruction booklet, and a research information sheet.

Is a COA provided?

Yes. Batch-specific Certificate of Analysis is available on request — contact us via the contact form.

How long does shipping take?

UK delivery in 1–2 business days with full tracking. Dispatched with a cold pack to maintain compound stability during transit.

Is packaging discreet?

Yes. All orders are securely and discreetly packaged with no external branding identifying the contents.

What payment methods are accepted?

Bank transfer and cryptocurrency (Bitcoin). Crypto orders receive an automatic 5% discount at checkout.

Verified Customer Reviews

★★★★★

“Ordered on Tuesday, tracking email came through the same evening, and it landed Friday — cold pack still cold inside. Plain outer box, nothing that gives away what’s inside. Exactly what you want.”

Sarah M. — Verified Buyer · Manchester · March 2026

★★★★★

“This is my second order from SlimShot. The pen feels well put together, the instruction booklet in the box is straightforward, and I had the COA back by email within a day of requesting it.”

James T. — Verified Buyer · Leeds · April 2026

★★★★★

“I was a bit hesitant ordering online for the first time, but the bank transfer details were clear and I got a confirmation email straight away. Pen arrived properly sealed and still refrigerated. No issues at all.”

Rachel P. — Verified Buyer · Birmingham · April 2026

★★★★★

“Went for the x2 bundle — better value if you’re planning ahead. Both pens arrived in the same batch which mattered for us. Tracked delivery, signed for at the door.”

Michael A. — Verified Buyer · London · May 2026

★★★★★

“Site is easy to navigate, product page has all the info you need, and dispatch was quicker than I expected. Packaged discreetly and the cold pack was still doing its job on arrival.”

Wendy H. — Verified Buyer · Glasgow · March 2026

★★★★☆

“Delivery was quick and the kit arrived properly sealed and chilled. COA took a couple of days to come through — not a dealbreaker, but worth knowing. Everything else was spot on and I’d order again.”

David K. — Verified Buyer · Bristol · May 2026

★★★★★

“Checkout was straightforward and communication was good throughout. The product matched what was described on the site. Professional setup overall.”

Emma L. — Verified Buyer · Cardiff · June 2026

Related products

You may also like

Retatrutide 40mg x2 Bundle
Bundle

Retatrutide 40mg x2 Bundle

16 week Supply · Triple agonist · Pre-filled pen

£279.99