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The table below compares the peptides most frequently discussed in tinnitus research, focusing on mechanism, evidence quality, and practical considerations for research use. BPC-157 Reduces cochlear inflammation via cytokine modu…
Thymalin Restores thymic T-cell regulation; reduces cytokine storm (IL-6, TNF-α by 40–55%) Within 24 hours of symptom onset 5–10mg SC daily × 5–7 days Acute immune dysregulation (0–48 hours) Best choice for preventing immune over…
BPC-157 Upregulates VEGF, EGF, FGF receptors; promotes angiogenesis and collagen synthesis Rotator cuff tendinopathy, hand ligament microtrauma, TFCC damage Moderate (animal models, limited human trials) 200–500 mcg SubQ 2x daily…
PT-141 (bremelanotide) Low sexual desire and related distress in premenopausal women (HSDD); erectile response in men Strong human clinical — FDA-approved for one specific indication Effect size is modest; approved only for preme…
BPC-157 Tendon, ligament, muscle and gut tissue repair Mostly animal/preclinical; only a few small human pilot studies No large human efficacy trials; sold through unregulated channels; flagged in sport TB-500 (a thymosin β-4 fra…
DSIP (Delta Sleep-Inducing Peptide) Named for promoting slow-wave (delta) sleep; the only one of the three tested directly for sleep in humans Preclinical + small, dated human studies — mixed to negative Best-controlled human tri…
BPC-157 NO signaling, tissue repair Joint inflammation, tendon repair models Tissue injury, cartilage research TB-500 (Thymosin Beta-4) NF-κB modulation, actin dynamics Anti-inflammatory signaling research Soft tissue, cardiac, j…
BPC-157 Tissue healing, gastric protection Joint, tendon, gastric models Species dosing requires vet input GHK-Cu Wound healing, gene expression Skin, wound, coat research Copper homeostasis varies by species Thymosin Beta-4 (TB-…
The comparison below covers the most-studied research peptides for metabolic dysfunction, their primary mechanisms, evidence base, and practical limitations. Tirzepatide analogs Dual GLP-1/GIP receptor agonist. Slows gastric empt…
BPC-157 VEGF receptor upregulation, angiogenesis promotion Tendons, ligaments, gastric mucosa Tendon ruptures, ligament sprains, muscle tears 4 hours (requires daily dosing) Moderate. Animal models strong, human trials limited TB…
GHK-Cu (Copper Peptide) Activates TGF-β and VEGF signaling to stimulate collagen synthesis and wound healing pathways 18.9% increase in dermal thickness, 27.6% reduction in fine lines (12 weeks, 0.05%) 0.01–0.05% High. Oxidizes r…
MK-677 GH secretagogue (ghrelin receptor agonist) Indirect LH stimulation via IGF-1 feedback; 15–20% increase in men with low baseline 12.5–25 mg oral daily before bed 60–70% oral (high first-pass stability) Best for men over 35 …
BPC-157 VEGF-mediated angiogenesis, tight junction protein upregulation Restores occludin and ZO-1 expression, reduces permeability by 40–60% in 72 hours Modest. Reduces neutrophil infiltration, limited direct immune modulation A…
Semaglutide (GLP-1 agonist) GLP-1 receptor activation → enhanced insulin secretion, delayed gastric emptying Moderate. Reduces fasting insulin by 25–35% Caloric deficit via appetite suppression + improved glucose disposal 1.0–2.4…
BPC-157 Epithelial repair, tight junction stabilization, angiogenesis 3–7 days Sustained (weeks) Chronic bloating with suspected leaky gut or mucosal damage Gold standard for structural repair. Pairs well with anti-inflammatory p…
| Peptide | Mechanism | Molecular Weight | Clinical Evidence | Optimal Concentration | Timeline for Results | Professional Assessment ||—|—|—|—|—|—|| Palmitoyl Pentapeptide-4 (Matrixyl) | Signals fibroblasts to synthesize collage…
CJC-1295/Ipamorelin GHRH analog + ghrelin mimetic. Sustained GH elevation without cortisol spike 6–8 days (CJC) / 2 hours (Ipamorelin) 2mg weekly CJC + 200–300mcg nightly Ipamorelin Systemic fat loss, slight visceral preference d…
Before selecting a peptide for immune modulation, understanding the specific immune pathway each targets prevents mismatches between mechanism and goal. The table below compares the three highest-evidence peptides across immune f…
GLP-1 Agonists (Semaglutide, Tirzepatide) Appetite suppression via hypothalamic GLP-1 receptors + delayed gastric emptying 9–12 months (3+ months post-breastfeeding) Active lactation, prolactin >20 ng/mL, untreated thyroid dysfun…
The regulatory landscape creates confusion. Peptides like semaglutide and tirzepatide are FDA-approved for type 2 diabetes and obesity. Conditions beyond prediabetes. But physicians prescribe them off-label for patients with A1C …