Peptide Resources

Research, protocols, dosage guides, vendors, and frequently asked questions.

Research & Studies
PubMed↗

BPC-157 Research

Collection of peer-reviewed studies on BPC-157's healing and gastroprotective effects.
PubMed↗

TB-500 / Thymosin β4

Studies on Thymosin Beta-4's role in tissue repair, inflammation, and angiogenesis.
PubMed↗

GH Secretagogues

Research on CJC-1295, Ipamorelin, and related peptides and their GH-stimulating properties.
PubMed↗

GLP-1 Agonists

Clinical literature on Semaglutide, Tirzepatide, and GLP-1 receptor agonists for metabolic health.
PubMed↗

Epithalon & Longevity

Studies on Epithalon's telomere-lengthening and anti-aging effects in animal and human models.
ClinicalTrials.gov↗

Active Clinical Trials

Search ongoing and completed peptide clinical trials registered with the US National Library of Medicine.
Dosage Guides & Protocols

⚠ These are commonly referenced community protocols and do not constitute medical advice. Always consult a qualified healthcare provider before use.

Peptide Common Dose Frequency Route Notes
BPC-157 250–500 mcg 1–2× daily SubQ / oral Near injury site; cycle 4–6 wks
TB-500 2–2.5 mg 2× weekly SubQ / IM Loading phase 4–6 wks, then maintenance
CJC-1295 + Ipamorelin 100 mcg each 3× weekly SubQ Inject before bed on empty stomach
Tesamorelin 1–2 mg Daily SubQ FDA-approved for HIV lipodystrophy
Semaglutide 0.25–2.4 mg Weekly SubQ Titrate up slowly to minimize GI sides
Tirzepatide 2.5–15 mg Weekly SubQ Start low; increase every 4 weeks
Retatrutide 1–12 mg Weekly SubQ Still in trials; use with caution
PT-141 0.5–2 mg As needed SubQ / nasal Use 1–2 hrs before; start low
Epithalon 5–10 mg Daily × 10–20 days SubQ / IV Typically cycled 1–2× per year
Selank 250–500 mcg 1–2× daily Nasal / SubQ Anxiolytic; cycle 2 wks on / 2 off
GHK-Cu 1–2 mg Daily SubQ / topical Topical for skin; SubQ for systemic
Thymosin Alpha-1 1.5 mg 2× weekly SubQ Immune support; 4–6 wk cycles
Vendor & Sourcing Info
⚠ Disclaimer — Peptides sold by the vendors below are for research purposes only and are not approved for human use by the FDA unless otherwise noted. We do not endorse any vendor and are not affiliated with or compensated by any of the links below. Always verify third-party lab testing (COA) before purchasing.
Vendor↗

Registered Peptides

US-based supplier with third-party testing fir endotoxin and purity. Wide selection of research peptides.
Vendor↗

Limitless Life Nootropics

Specializes in nootropic and cognitive peptides including Selank, Semax, and Dihexa.
Supplies↗

BAC Water & Supplies

Bacteriostatic water and reconstitution supplies. Essential for peptide preparation.
Frequently Asked Questions
Bacteriostatic water (BAC water) is sterile water containing 0.9% benzyl alcohol, which prevents bacterial growth. It's used to reconstitute lyophilized (freeze-dried) peptide powder into a solution for injection. Regular sterile water works for single-use but BAC water allows a vial to be used over several weeks safely.
Lyophilized (dry) peptides should be stored in a freezer and can last 1–2 years. Once reconstituted with BAC water, store in the refrigerator (2–8°C / 36–46°F) and use within 4–6 weeks. Avoid repeated freeze-thaw cycles and keep away from light. Never leave reconstituted peptides at room temperature for extended periods.
For subcutaneous injections, a 29–31 gauge, 0.5 inch (12mm) needle is most commonly used. A 1mL (100-unit) insulin syringe is standard and works well for most peptide doses. If your doses are very small (under 10 units), a 0.5mL (50-unit) syringe gives more precision. Use our Calculator page to figure out exactly how many units to draw.
SubQ (subcutaneous) means injecting into the fat layer just under the skin — typically the belly, love handles, or thigh. IM (intramuscular) means injecting directly into muscle tissue. Most peptides are administered SubQ as it's easier, less painful, and provides sufficient absorption. Some peptides like TB-500 are occasionally given IM for faster onset.
The legal status varies by country and intended use. In the US, most research peptides are legal to purchase for research purposes but are not approved by the FDA for human use (exceptions include Semaglutide and Tesamorelin which are FDA-approved drugs). In Australia, many peptides are Schedule 4 substances requiring a prescription. Always check the laws in your jurisdiction before purchasing or using peptides.
Always look for a Certificate of Analysis (COA) from a third-party lab using HPLC (High-Performance Liquid Chromatography) or Mass Spectrometry testing. This verifies purity and identity. Reputable vendors provide batch-specific COAs on their website. Be skeptical of vendors who can't provide recent, third-party lab results.
Many peptides can be stacked, and some are commonly sold as pre-made blends (e.g. BPC-157 + TB-500, CJC-1295 + Ipamorelin). However, stacking increases complexity and potential for interactions. Common well-tolerated stacks include healing peptides (BPC-157 + TB-500) and GH secretagogue combinations. Always introduce one peptide at a time to identify any individual reactions before stacking.