Retatrutide Pen Manufacturing Overview
ShiLai™ Healthcare manufactures Retatrutide pre-filled injection pens for B2B OEM and private-label programs. Each pen is filled with a precise dose of Retatrutide solution, sealed, and analytically verified before shipment. The pre-filled format eliminates reconstitution at point of use, making it the most operationally straightforward delivery format for Retatrutide.
Retatrutide is a 39-amino acid GLP-1/GIP/Glucagon triple agonist. ShiLai™ Healthcare manufactures Retatrutide to ≥98% purity by RP-HPLC with LC-MS identity confirmation on every production batch.
Retatrutide Pen Factory & Production
Our Retatrutide pen production covers the full manufacturing workflow: peptide synthesis, formulation, sterile filling, pen assembly, and packaging. Each production batch is scheduled against confirmed OEM orders. Batch documentation — including COA, HPLC chromatogram, and LC-MS spectrum — is issued per batch and accompanies every shipment.
- Peptide synthesis and formulation in-house
- Sterile filling and pen assembly
- Batch-level HPLC purity and LC-MS identity verification
- COA issued per production batch
- Custom concentrations and fill volumes available
- International B2B dispatch with full documentation
Retatrutide Pen Supplier for Global B2B Partners
ShiLai™ Healthcare supplies Retatrutide pens to distributors, wholesalers, research organisations, and private-label brand owners across multiple markets. We support both standard catalogue configurations and custom OEM specifications. Our Russia distribution partner is BioAge Peptides.
Available Strengths
2mg
per pen
4mg
per pen
6mg
per pen
8mg
per pen
10mg
per pen
12mg
per pen
Custom strengths available for OEM partners. Contact us to discuss your requirements.
Pen Specifications
| Parameter | Specification |
|---|---|
| Active ingredient | Retatrutide (GLP-1/GIP/Glucagon triple agonist) |
| Pen type | Pre-filled subcutaneous injection pen |
| Available strengths | 2mg, 4mg, 6mg, 8mg, 10mg, 12mg per pen |
| Packaging | 1 pen/kit, 5 pens/box (custom packaging available) |
| Purity | ≥98% by RP-HPLC |
| Identity | LC-MS confirmed per batch |
| Documentation | COA, HPLC chromatogram, LC-MS spectrum |
| OEM / private label | Available — B2B only |
OEM & Private-Label Pen Configuration
OEM partners can specify pen strength, fill volume, cartridge compatibility, pen device type, label design, carton artwork, and packaging configuration. We support both small-batch development runs and scalable production. Custom Retatrutide pen configurations are developed from specification through finished product with full analytical documentation.
B2B OEM Projects Only
We are currently not accepting individual or retail customer orders. All enquiries are for registered businesses, licensed distributors, and research organisations only.
Start OEM Enquiry on WhatsAppFrequently Asked Questions
- Can Retatrutide pens be customised for OEM programs?
- Yes. ShiLai™ Healthcare supports custom Retatrutide pen configurations including strength, fill volume, pen device type, label design, and packaging. OEM programs are developed from specification through finished product.
- What OEM pen configurations are available?
- Available configurations include pre-filled single-chamber pens in standard strengths (2mg–12mg), custom concentrations, and custom fill volumes. Pen device type and cartridge compatibility can be specified for OEM orders.
- What packaging options are available for Retatrutide pens?
- Standard packaging is 1 pen/kit or 5 pens/box. Custom label design, carton artwork, and insert documentation are available for private-label and OEM programs.
- What is the difference between a single-chamber and dual-chamber Retatrutide pen?
- A single-chamber pre-filled pen contains Retatrutide in solution, ready to use. A dual-chamber pen keeps lyophilized Retatrutide and diluent in separate chambers, mixed at point of use — providing enhanced stability for peptides with limited solution shelf life.
- What documentation accompanies a Retatrutide pen production batch?
- Each batch is supported by a Certificate of Analysis (COA) covering RP-HPLC purity, LC-MS identity confirmation, and quantitative assay. HPLC chromatogram and LC-MS spectrum are provided for traceability.
- Can international B2B buyers request private-label Retatrutide pen manufacturing?
- Yes. ShiLai™ Healthcare works with B2B partners across multiple markets. Private-label programs include custom branding, label design, and packaging configuration. All private-label products are manufactured to the same analytical standards as our standard product line.