Peer-reviewed data, clinical mechanisms, and dosing frameworks — curated for researchers, practitioners, and informed enthusiasts.
CJC-1295 with DAC has a 6-8 DAY half-life; Modified GRF (1-29) clears in ~30 minutes. Same modified GHRH(1-29) backbone, one bolt-on linker, ~1,000x PK difference.
TB-500 is a 7-aa fragment of thymosin beta-4 (43 aa, ~4,963 Da), not the full protein. Cross-COA review: ~67% of "TB-500" vials are actually full Tβ4.
Check peptide reconstitution math without signing up. Learn how mg, mcg, mL and U-100 markings relate, with a free web calculator and clear limits.
Most peptide comparison content is vendor marketing. A mechanism-first framework for comparing any two peptides on data that actually predicts outcomes — plus a free tool.
Most peptide information online comes from vendors or academic databases too technical for practitioners. A free, clinical-grade 60+ compound library positioned between the two.
Most peptide buyers skip the research step. A 5-step workflow using free tools — comparison, dosing calculator, URL import, COA verification — before any money changes hands.
BPC-157 comes in 5mg and 10mg vials. Standard reconstitution with 2mL BAC water yields 2,500 mcg/mL. Full dose-to-unit table + free calculator.
Compounded tirzepatide typically ships in 30 mg or 60 mg vials. At 30 mg + 2 mL BAC water, a 2.5 mg starting dose is 17 U on a U-100 syringe. Full table + free calculator.
Compounded semaglutide in 5mg or 10mg vials reconstituted with 2mL BAC water. Standard 0.25mg starting dose = 5 units on U-100. Full titration table + calculator.
TB-500 uses loading (4-10mg 2x/week) then maintenance dosing. 10mg vial + 2mL BAC water = 5,000 mcg/mL. Full dose-to-unit table + calculator.
Sermorelin ships in 3mg, 5mg, 9mg, 15mg compounded vials. Standard 5mg + 2mL BAC water = 2,500 mcg/mL. 300 mcg pre-bed = 12 U on U-100 syringe.
Head-to-head comparison of BPC-157 and TB-500: mechanism, tissue specificity, dosing frequency, human evidence and whether stacking them adds value.
Ipamorelin hits ghrelin receptors, CJC-1295 is a GHRH analogue — complementary receptors. What each does alone, what stacking adds and DAC vs non-DAC.
Sermorelin stimulates endogenous GH via GHRH; exogenous HGH delivers the hormone directly. IGF-1, body comp, cost, safety and legal comparison honestly.
A 2025 review of 544 studies found just 1 human BPC-157 trial. Guide covers mechanisms, pharmacokinetics, dosing protocols and the evidence honestly.
SURMOUNT-5 head-to-head: tirzepatide delivered 20.2% weight loss vs 13.7% for semaglutide at 72 weeks. Mechanism, cost, access and what the data means.
TB-500 is a synthetic thymosin beta-4 fragment studied for soft-tissue repair, anti-inflammation and cardiac recovery. What the evidence actually shows.
CJC-1295 DAC raises GH 2-10x for 6+ days; ipamorelin adds a selective pulse without cortisol. The combined evidence, protocols and DAC vs non-DAC split.
Bremelanotide (Vyleesi) has been FDA-approved for HSDD in women since 2019. Acts centrally on melanocortin-4 receptors, not via PDE5. Full evidence review.
GHK-Cu raised collagen 28% on average (51% in the top quartile) in a 21-woman trial. Mechanism, evidence and what separates topical from injectable use.
Sermorelin raised IGF-1 by 117% in Vittone 1997 (JCEM). Mechanism, FDA history, dosing protocols and honest comparison to exogenous HGH.
Epitalon (Ala-Glu-Asp-Gly) activates telomerase and extended lifespan in multiple animal models. Reviews Khavinson 15-year human data, mechanism and dosing.
Thymosin Alpha-1 is the 28-aa thymic peptide behind Zadaxin (FDA Orphan Drug). Hepatitis B meta-analysis: 2.4x higher seroconversion vs interferon alone.
Semax is a Russian-approved ACTH(4-10) analogue that upregulates BDNF in the hippocampus without HPA axis activation. Mechanism, cognitive data and dosing.
MOTS-c is a 16-aa mitochondrial peptide that activates AMPK and cut HFD-induced obesity 40% in mice. The Kim 2015 data, the AMPK pathway and dosing.
NAD+ drops ~50% from age 20 to 50. Sirtuin/PARP/CD38 mechanisms, NR vs NMN vs direct IV evidence and what Brenner and Sinclair's studies actually show.
FDA testing found up to 40% of online peptides are incorrectly dosed. Here's the full checklist for vetting vendors, reading COAs, and researching before you buy.
BPC-157 is one of the most counterfeited research peptides online. Here's exactly how to verify purity, read a COA, and what the evidence says about its mechanisms.
Sermorelin is registered as a Category 1 compoundable peptide — the only legal route is a licensed compounding pharmacy with a physician prescription.
Compounded tirzepatide costs $229–349/month vs $1,000+ for Zepbound. Here's the legal landscape, how 503A compounding works, and what quality checks actually matter.
TB-500 has zero human clinical trials and no legal compounding route. How the grey-market works, what purity means here and why research comes first.
Ipamorelin and CJC-1295 were removed from FDA Category 2 in Sept 2024 and may return to Category 1 compounding access. Regulatory status and sourcing.
PT-141 (bremelanotide / Vyleesi) has been FDA-approved since 2019 — the only approved peptide for sexual dysfunction. Legal access and off-label use.
GHK-Cu is Category 2 for injectable compounding but freely available as a cosmetic topical. Which formulation matches the clinical evidence, by route.
The FDA declared the semaglutide shortage over in Feb 2026, ending most compounding access. Legal options now — brand, patient aid and exceptions.
