PT-141 (bremelanotide) works through the MC4R pathway in the brain rather than the vascular system, offering an alternative for men who do not respond to PDE5 inhibitors. Here is how it compares.
BPC-157 is a synthetic gastric peptide whose reported benefits for gut, tendon and nerve healing come mainly from animal studies. Only three small uncontrolled human studies exist, rated very low certainty in a 2026 systematic review.
The typical BPC-157 dosage is 200 to 800 mcg per day, often 250 to 500 mcg once or twice daily. With a 5 mg vial mixed in 2 mL of bacteriostatic water, a 250 mcg dose is 0.1 mL, or 10 units on an insulin syringe.
CJC-1295 and ipamorelin raise your own growth hormone through two pathways: a GHRH analog that strengthens the release signal and a selective ghrelin mimetic that triggers the pulse. Neither is FDA approved, and the combination has not been tested in a published human trial.
Early research shows MOTS-c and humanin, two mitochondrial peptides, activate AMPK and NAMPT to support declining NAD+ levels, though human trial data remains limited.
Semax is a synthetic peptide derived from ACTH that has been used clinically in Russia for decades. Research points to cognitive enhancement, neuroprotection, and anxiety reduction through BDNF upregulation and dopamine modulation.
Selank is a synthetic peptide derived from the immune-modulating molecule tuftsin. Developed in Russia, it has demonstrated anxiolytic and nootropic effects through GABA modulation and BDNF upregulation. Here is what the research shows about dosing, delivery, and clinical outcomes.
A complete practical guide to peptide injections — covering subcutaneous vs. intramuscular technique, reconstitution, dosing math, injection site rotation, equipment, storage, and answers to the most common questions about self-injection.
GHK-Cu is a natural copper peptide that changes the activity of more than 4,000 genes in lab studies, with its best human evidence in small topical skin trials. Here is what the research shows for skin, hair and wound healing, plus dosing, safety and its 2026 FDA status.
Thymosin alpha-1 is a naturally occurring thymic peptide that modulates immune function by activating T cells, dendritic cells, and NK cells. Approved in over 35 countries for hepatitis and immune deficiency, it is also being explored for cancer support, chronic infections, and autoimmune conditions
Oral BPC-157 healed ulcers, colitis and fistulas in rat studies because it survives stomach acid, but no human trial has tested it for any gut condition. Here is the animal evidence, the doses practitioners use, and where FDA stands.
Peptide protocols set the dose, frequency, cycle length and stacking plan for each peptide, from 5 on, 2 off ipamorelin cycles to 4 to 12 week BPC-157 courses. Vesugen has no validated injection cycle or mg per day dose.
