An investigational peptide studied for combined activity at the glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide-1 (GLP-1) and glucagon receptors. It is supplied as a lyophilised research material for controlled laboratory and analytical work only.
Investigational research material
This is not an approved medicinal product. This material is not for human or veterinary use, consumption or administration, and is not intended to diagnose, treat, cure or prevent any disease.
Compound overview
Research context
Published research describes as a single-molecule triple receptor agonist. It is investigated as a tool for studying multi-receptor metabolic signalling and the interaction between GIP, GLP-1 and glucagon receptor pathways. References to published studies describe the compound investigated by those authors; they do not establish the identity, performance or suitability of any material sold on this page.
Batch documentation
Independent analytical documentation is published where available for specific batches and variations. A result indicator appears only when a published record is available. Match the vial size and batch identifier to the corresponding report before relying on any result.
View available R-Series lab results →
Supply and laboratory handling
- Supplied in the vial size selected above.
- Keep the sealed lyophilised vial dry and protected from direct light.
- A cool, dry place, refrigerator or freezer may be used according to the intended storage duration, compound-specific information and your laboratory’s validated procedure.
- Use clean laboratory technique and equipment appropriate to the intended analytical method.
- Follow the lot-specific documentation and your laboratory’s validated handling and storage procedures.
- Avoid repeated temperature cycling and unnecessary exposure to moisture.
Where a batch document or supplier specification gives different instructions, the lot-specific document takes precedence.
Frequently asked questions
What is R-Series?
Known by the development code LY3437943, it is an investigational peptide described in the scientific literature as an agonist at the GIP, GLP-1 and glucagon receptors.
Is R-Series an approved medicine?
No. it remains investigational and is not supplied as a medicine, treatment, supplement or consumer product.
Which vial sizes are available?
Current vial sizes, stock, pre-order status, pricing and any batch-documentation indicators are shown in the variation selector above.
Does every vial size have a published laboratory result?
No. Results are available only for the selected batches and vial sizes marked with a result indicator. Always check the batch identifier on the report.
How should the material be stored?
Keep the sealed lyophilised material dry and protected from light. A cool, dry place, refrigerator or freezer may be used according to the intended storage duration, compound-specific information and your laboratory’s validated procedure. Avoid repeated temperature cycling and moisture exposure. No universal shelf-life is stated unless it is supported by batch documentation.
Information reviewed: 28 August 2026.
