Peptides DB
Research-centric peptide and protocol reference hub

Peptides by category

Start from the goal rather than the molecule. Each hub ranks its peptides by how much indexed research actually exists — so a short list is a finding, not an omission.

Best peptides for Weight Loss46 peptides

Research-backed peptides for weight loss and fat reduction. GLP-1 agonists, amylin analogs, and GH-axis peptides compared with mechanism, dosing, and study data.

Best peptides for Muscle Growth17 peptides

Peptides studied for muscle hypertrophy, strength, and recovery. GH secretagogues, IGF-1 analogs, and myostatin inhibitors with mechanism, dosing, and study data.

Best peptides for Healing & Recovery22 peptides

Peptides studied for soft-tissue repair, tendon and ligament recovery, and post-injury healing. BPC-157, TB-500, GHK-Cu, and more — with research data.

Best peptides for Skin & Aesthetics4 peptides

Peptides studied for skin regeneration, wrinkle reduction, and dermal repair. Copper peptides (GHK-Cu, AHK-Cu), Argireline, Matrixyl, SNAP-8, and more.

Best peptides for Sleep & Circadian2 peptides

Peptides studied for sleep quality, deep sleep, and circadian regulation. DSIP, Pinealon, Epitalon, and GH-axis peptides with research data.

Best peptides for Longevity27 peptides

Peptides studied for longevity, cellular aging, telomere maintenance, and senescence. Epitalon, NAD+, Glutathione, SS-31, FOXO4-DRI and more.

Best peptides for Cognitive & Nootropic16 peptides

Peptides studied for memory, focus, neuroprotection, and synaptic plasticity. Semax, Selank, Cerebrolysin, Dihexa, P21 and more.

Best peptides for Sexual Health5 peptides

Peptides studied for libido, sexual dysfunction, fertility, and reproductive hormone modulation. PT-141, Kisspeptin, HCG, Gonadorelin and more.

Best peptides for Immune & Inflammation10 peptides

Peptides studied for immune modulation and inflammation control. KPV, Thymosin Alpha-1, LL-37, Thymulin, Thymalin and more.

Best peptides for Metabolic34 peptides

Peptides studied for metabolic health, glucose regulation, mitochondrial function, and energy. NAD+, MOTS-c, SS-31, AICAR, GLP-1 agonists.

Best peptides for Joint Pain & Tendon Repair5 peptides

Peptides studied for joint pain, tendon and ligament repair, and connective-tissue regeneration. BPC-157, TB-500, GHK-Cu, MGF, Cartalax.

Best peptides for Hair Growth2 peptides

Peptides studied for hair follicle stimulation and hair regrowth. AHK-Cu (Copper Tripeptide-3), GHK-Cu, Thymulin and more.

Best peptides for Energy & Performance5 peptides

Peptides studied for energy, mitochondrial function, exercise capacity, and athletic performance. NAD+, MOTS-c, AICAR, L-Carnitine, SLU-PP-332.

Best peptides for Anti-Aging8 peptides

Peptides studied for anti-aging — telomerase, mitochondrial repair, senescence, and skin/cellular renewal. Epitalon, NAD+, GHK-Cu, SS-31, FOXO4-DRI.

How these counts work

A peptide appears in a hub when its category tags match, and only when its profile has a written summary — stub pages are excluded here and from search engines. Counts move as the Librarian files new work. For educational and research purposes only; not medical advice.