Peptide Library
Searchable, scored, and cited. Every peptide page pulls live data from institutional sources (FDA, NIH, EMBL-EBI). Browse by goal below or filter by evidence quality.
Educational only — not medical advice. SmartPeptide does not prescribe, diagnose, or treat. Always consult a licensed healthcare provider before using any peptide, supplement, medication, or protocol.
Note on this filter: peptides appear here because oncology research is mentioned in their published literature — NOT because they are cancer treatments. No peptide on SmartPeptide is presented as a cancer therapy. Always work with a qualified oncologist.
Semaglutide
Fat LossGLP-1 receptor agonist with extensive Phase 3 trial data for type 2 diabetes and chronic weight management. Prescription-only in most jurisdictions.
Liraglutide
Fat LossDaily GLP-1 receptor agonist (Saxenda/Victoza). FDA-approved for chronic weight management and type 2 diabetes. Older sibling of semaglutide with smaller weight-loss effect size.
Tesamorelin
Fat LossGHRH analog (Egrifta) FDA-approved for HIV-associated lipodystrophy. Studied for visceral adiposity reduction outside that indication.
Thymosin Alpha-1
InflammationImmunomodulatory peptide approved in some countries (e.g., for hepatitis B). Studied in immune modulation contexts.
Sermorelin
LongevityGHRH analog (first 29 amino acids of human GHRH). Stimulates endogenous growth hormone release. Approved for pediatric GH deficiency, widely used off-label in adults.
NAD+ (Nicotinamide Adenine Dinucleotide)
LongevityCoenzyme essential for cellular energy production and DNA repair (NOT a peptide — it's a nucleotide). Available as IV infusion, intranasal, and oral precursors (NR, NMN). Heavily discussed in longevity communities. Direct NAD+ supplementation has weak human RCT support; precursors have somewhat better data.
Kisspeptin
OtherNeuropeptide encoded by the KISS1 gene. Master regulator of the hypothalamic-pituitary-gonadal axis — stimulates GnRH release and downstream LH/FSH/sex-hormone production. Studied as a diagnostic and therapeutic agent for hypogonadism, infertility, and sexual function. Not FDA-approved.
IGF-1 LR3
MuscleInsulin-like Growth Factor 1, Long R3 variant — an analog of human IGF-1 with extended half-life (~20-30 hours vs. ~12 minutes for native IGF-1). Used in research; widely (and controversially) discussed in performance-enhancement communities. NOT FDA-approved for human use; the only approved IGF-1 product is mecasermin (native sequence).
MGF (Mechano Growth Factor / IGF-1Ec)
MuscleSplice variant of IGF-1 (specifically IGF-1Ec) produced locally in muscle in response to mechanical loading. Theorized to drive satellite-cell activation and muscle hypertrophy. Heavy bodybuilding-community interest. Limited human clinical-trial evidence. NOT FDA-approved.
Melanotan II
SkinSynthetic analog of α-melanocyte-stimulating hormone (α-MSH). Binds melanocortin receptors (notably MC1R for tanning and MC4R for sexual function). Originally researched for therapeutic skin pigmentation; abandoned in clinical development. Sold heavily as a grey-market 'tanning peptide.' Significant safety concerns — Class A action by some regulators.