Peptide Knowledge Hub — Guides, Research & Education
Your central resource for peptide research. Whether you're new to peptides or looking for specific compound information, everything is organised by topic below — research guides, course protocols, tools, and reference material.
Research guides
In-depth articles covering specific peptides, legal frameworks, and practical research topics.
Getting started
- What Are Peptides? The Complete UK Research Guide
- Are Peptides Legal in the UK? Complete 2026 Guide
- How to Reconstitute and Store Peptides
- Getting Started with Peptides — Beginner's Guide
Healing and recovery
Weight loss
- Semaglutide UK: Complete Research Guide
- Best Peptides for Weight Loss: What the Research Shows
- Retatrutide: Complete UK Research Guide
Muscle growth and bodybuilding
Cognitive and nootropics
Course guides
Step-by-step protocol guides for individual peptides. Each course covers reconstitution, research protocols, storage, and what to expect.
Healing and recovery
| Course | Peptide | Duration |
|---|---|---|
| BPC-157 Course | BPC-157 5mg | 4-8 weeks |
| TB-500 Course | TB-500 5mg | 4-8 weeks |
| Wolverine Stack Course | BPC-157 + TB-500 | 4-8 weeks |
Weight loss
| Course | Peptide | Duration |
|---|---|---|
| Semaglutide Course | Semaglutide | 12-24+ weeks |
| Tirzepatide Course | Tirzepatide | 12-24+ weeks |
| Retatrutide Course | Retatrutide | 12-24+ weeks |
Growth hormone
| Course | Peptide | Duration |
|---|---|---|
| CJC-1295 + Ipamorelin Course | CJC-1295 + Ipamorelin | 8-16 weeks |
| Tesamorelin + HGH Course | Tesamorelin / HGH 191AA | 8-24 weeks |
Cognitive
| Course | Peptide | Duration |
|---|---|---|
| Semax + Selank Course | Semax + Selank | 10-14 day cycles |
Anti-aging and longevity
| Course | Peptide | Duration |
|---|---|---|
| NAD+ Course | NAD+ | 2-4 week loading |
| GHK-Cu Course | GHK-Cu | 4-12 weeks |
Other
| Course | Peptide | Duration |
|---|---|---|
| PT-141 Course | PT-141 | As needed |
Tools and resources
- Peptide Calculator — work out reconstitution volumes and concentrations
- Peptide Stacking Guide — goal-based stacks with protocols and timing
- Peptide Comparison Tables — side-by-side comparisons by category
- Peptide Selector Quiz — answer a few questions, get a recommendation
- Peptide Storage Guide — temperature, shelf life, and handling best practices
- How to Reconstitute Peptides — step-by-step mixing instructions
Frequently asked questions
What are peptides?
Short chains of amino acids, smaller than proteins, that act as signalling molecules in the body. They direct cells to perform specific functions — tissue repair, hormone release, appetite regulation, and more. Read our full guide to peptides for a detailed explanation.
Are peptides legal in the UK?
Research peptides are legal to purchase in the UK. They are not classified as controlled substances under the Misuse of Drugs Act 1971. However, they are not licensed medicines and cannot be sold for human consumption. All products from Peptide Shop UK are sold strictly for research purposes. See our legal guide for the full picture.
How should peptides be stored?
Lyophilised (powder) peptides should be kept at -20C for long-term storage. Once reconstituted with bacteriostatic water, store refrigerated at 2-8C and use within 28 days. Full details in our storage guide.
What is the difference between bacteriostatic water and sterile water?
Bacteriostatic water contains 0.9% benzyl alcohol as a preservative, allowing multiple draws over 28 days. Sterile water has no preservative and must be used within 24-48 hours. Always use bacteriostatic water for peptide reconstitution.
Which peptide should I start with?
That depends on your research goals. Our selector quiz can help narrow it down, or browse the comparison tables to compare options side by side. If you're completely new, start with the getting started guide.
Disclaimer: All content is for research and educational purposes only. Peptide Shop UK sells peptides strictly for research use. This is not medical advice.