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
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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.
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Prepared with cold pack & tracking
Tracked 1–2 day UK delivery
| Product Name | Retatrutide 40mg (R&D Only) |
|---|---|
| Quantity | 1 pre-filled pen — 40mg total (4 × 10mg doses) |
| Mechanism | Triple agonist — GLP-1, GIP & Glucagon receptors |
| Format | Pre-filled research device, sealed |
| Purity | High research-grade purity (HPLC verified) |
| Supply Duration | 8 weeks (research protocol dependent) |
| Frequency | Once weekly (research protocol dependent) |
| Intended Use | Laboratory and scientific research only |
Certificate of Analysis (COA): Batch-specific purity report — HPLC & Mass Spectrometry verified. Request COA
The following steps describe standard operation of the pre-filled research device for delivery mechanism evaluation in controlled laboratory settings.
Thoroughly clean your hands with soap and water to ensure a sterile environment before handling the pen or needle.
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.
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.
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.
Use the dose knob to select the correct dose as specified in your research protocol. Confirm the dose is visible in the dose window.
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.
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.
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.
| Weeks 1–4 | 2.5mg once weekly |
|---|---|
| Weeks 5–8 | 5mg once weekly |
| Weeks 9–12 | 7.5mg once weekly |
| Weeks 13 onward | 10mg 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.
| 2.5mg | Turn the dial 15 clicks |
|---|---|
| 5mg | Turn dial to 30 clicks |
| 7.5mg | Turn dial to 45 clicks |
| 10mg | Turn 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.
Laboratory handling recommendations for research device operation, dosing, and storage.
To maintain compound stability and device integrity for research purposes, store your SlimShot Retatrutide pen according to the following guidelines:
Keep out of reach of children. For disposal guidance or research enquiries, contact us via the contact form.
| UK | 1–2 business days — tracked & discreetly packaged with cold pack |
|---|---|
| EU | 3–7 business days |
| USA / Canada | 5–10 business days |
| Australia & Rest of World | 7–14 business days |
All orders are securely and discreetly packaged with no external branding identifying the contents. A tracking number is issued with every order.
One pre-filled research pen containing 40mg Retatrutide (4 × 10mg doses), 12 disposable needles, an instruction booklet, and a research information sheet.
Yes. Batch-specific Certificate of Analysis is available on request — contact us via the contact form.
UK delivery in 1–2 business days with full tracking. Dispatched with a cold pack to maintain compound stability during transit.
Yes. All orders are securely and discreetly packaged with no external branding identifying the contents.
Bank transfer and cryptocurrency (Bitcoin). Crypto orders receive an automatic 5% discount at checkout.
“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.”
“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.”
“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.”
“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.”
“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.”
“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.”
“Checkout was straightforward and communication was good throughout. The product matched what was described on the site. Professional setup overall.”

16 week Supply · Triple agonist · Pre-filled pen
£279.99