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GHRPs (GHRP-2, GHRP-6, Ipamorelin) Stimulate pulsatile GH release via ghrelin receptor 100–300mcg 2–3×/day 8–12% lean mass increase in older adults (clinical trial data) Requires pulsatile dosing to avoid receptor desensitization…
The difference between peptides that help with longevity and peptides marketed as 'anti-aging' is target specificity. Growth hormone secretagogues like CJC-1295/Ipamorelin elevate IGF-1, which improves lean mass retention and ski…
PT-141 (bremelanotide) Melanocortin MC3/MC4 Activates hypothalamic arousal circuits, increases dopamine and norepinephrine signaling FDA-approved (Phase 3 trials in women with HSDD) 45–90 minutes subcutaneous Nausea (40%), flushi…
Thymalin (thymic peptide) Stimulates thymulin production, upregulates CD4+CD25+FoxP3+ Treg cells, reduces pro-inflammatory cytokines Studied in immune reconstitution after chemotherapy, post-viral syndromes, autoimmune conditions…
DSIP (Delta Sleep-Inducing Peptide) Modulates corticotropin release, reduces cortisol-driven sleep fragmentation 1–2 nmol/kg subcutaneous, 30–60 min before sleep 7–14 days for polysomnography changes Extends slow-wave sleep durat…
Before considering peptides, recognize that the most validated cognitive interventions aren't pharmacological—they're behavioral. A 2022 meta-analysis in Nature Reviews Neuroscience (18 studies, 7,200 participants) found that 12 …
PT-141 (Bremelanotide) Melanocortin-4 receptor agonist; activates hypothalamic arousal circuits 54% in PDE5 inhibitor non-responders (JSOM 2020) Psychogenic ED, neurogenic ED, SSRI-induced dysfunction Nausea in 40% of users; inef…
GHRPs (GHRP-2, hexarelin, ipamorelin) Ghrelin receptor (GHS-R1a) agonism. Stimulates Gq signaling cascade in pituitary somatotrophs 200–400% above baseline within 30–45 minutes 20–30 minutes (acute pulse) High. D-Trp motif requir…
Cerebrolysin Neurotrophic factor mimicry, promotes synaptic reorganisation Acute phase (0–72 hours) Strong. Multiple RCTs, Cochrane review IV infusion (10–30mL daily) Best-evidenced peptide for acute stroke; modest but measurable…
The table below compares cognitive peptides across mechanism, administration, timeline, and evidence quality. Providing clarity on which compounds warrant consideration for focus-related research. Cerebrolysin BDNF/CNTF upregulat…
Before selecting a peptide approach for infection management, understanding how different peptide classes compare in mechanism, timeframe, and pathogen specificity is essential. Antimicrobial Peptides (LL-37, Defensins) Direct me…
Copper Peptides (GHK-Cu 1–2%) Reduces follicular inflammation, upregulates VEGF, inhibits TGF-β1 12–18% 8–12% (mild scalp irritation) Effective for early androgenetic alopecia; synergistic with minoxidil; fewer side effects than …
GHRP-2 20–30 minutes 2–3× daily SC injection Restores pulsatile GH release; 8–12% lean mass increase in trials Transient cortisol and prolactin elevation; hunger stimulation Best for restoring age-appropriate GH secretion pattern…
Mitochondrial-Derived Peptides (MOTS-c, Humanin) Activates PGC-1α and AMPK to drive biogenesis Nuclear gene transcription Rodent models show 30–65% metabolic improvements; human trials ongoing Effects persist 2–4 weeks post-admin…
The table below compares the three peptides with the strongest clinical evidence for sleep improvement. DSIP (Delta Sleep-Inducing Peptide) GABA-A receptor potentiation. Increases inhibitory neurotransmission in VLPO sleep center…
The following table compares four peptide categories studied for cognitive enhancement, outlining mechanisms, administration routes, evidence strength, and practical considerations. Neurotrophic Peptides (Cerebrolysin, NGF analog…
Direct telomerase activation (hTERT upregulation) Epitalon Animal models + small observational human trials 5–7% elongation in vitro; unconfirmed in vivo Theoretically elevated (parallels oncogenic telomerase reactivation) Strong…
BPC-157 VEGF upregulation, NF-κB inhibition, tight junction repair 200–500 mcg daily (SC/IM); 10 mcg/kg (rectal) Subcutaneous: high; Oral (unprotected): low; Oral (enteric): moderate Phase 2 observational data only. No FDA-approv…
The table below compares primary immune-modulating peptides by mechanism, targeted pathway, clinical evidence level, and practical application context. Thymosin Alpha-1 Thymic hormone restoration T-cell maturation (TLR2 → IL-2/IF…
Thymosin Alpha-1 (T 1) Enhances Treg differentiation; upregulates TLR signalling 1.6mg subcutaneous twice weekly, 12–16 weeks Moderate (Phase III trials in viral infections; no Lyme-specific RCT) Strongest evidence for immune rec…