ThePBrief

Peptide research, reference information, and daily briefings

For research and educational purposes only. Not medical advice.

Daily Focus

FDA Approves Foundayo (Orforglipron) — First Daily Oral GLP-1 Pill for Weight Loss

Eli Lilly's Foundayo becomes the first once-daily oral GLP-1 receptor agonist approved by the FDA, eliminating the need for injections in obesity treatment.

Daily Peptide Briefing

The latest research, delivered every morning

5-Amino-1MQ

Weight Loss

Small-molecule NNMT inhibitor that boosts cellular energy expenditure and fat metabolism. Raises NAD+ in adipose tissue and supports fat-cell shrinkage. Subcutaneous injection only — no oral form in this protocol.

50-100 mgOnce daily

AICAR

Anti-Aging

An AMPK activator that mimics the metabolic effects of exercise. Increases fatty acid oxidation, glucose uptake, and mitochondrial biogenesis. Known as an 'exercise in a pill' compound. Also studied for cardiac protection during ischemia.

25-50 mgOnce daily

AOD-9604

Weight Loss

Modified fragment of human growth hormone that drives lipolysis without affecting blood sugar or IGF-1. Favored for fat-loss and recomposition cycles where the user wants nothing else moving.

250-500 mcgOnce daily (optionally twice)

Adipotide

Weight Loss

A peptidomimetic that targets and destroys blood vessels feeding white adipose (fat) tissue, causing fat cell apoptosis. Originally studied as an anti-obesity agent in primates. Causes rapid fat loss by cutting off blood supply to fat cells.

100-500 mcgOnce daily

Ara-290 (Cibinetide)

Immune & Thymic

An innate repair receptor agonist derived from erythropoietin. Does not stimulate red blood cell production but activates tissue repair pathways. Being studied for small fiber neuropathy, sarcoidosis, and diabetic complications.

4 mgOnce daily

BPC-157

Healing & Recovery

Body Protection Compound-157, a synthetic peptide derived from a protein in gastric juice. Regenerative effects across gut, muscles, tendons, ligaments, and the nervous system. Staple of healing and recovery protocols.

250-500 mcg1-2x daily depending on severity

CJC-1295 (no DAC)

GH Secretagogues

Short-half-life GHRH analog used for pulsed GH release. Typically stacked with Ipamorelin to mimic natural pulsatile secretion. Drives fat loss, lean muscle, recovery, and sleep quality.

100-200 mcg1-3x daily (AM, PM, pre/post workout)

CJC-1295 (with DAC)

GH Secretagogues

Long-acting GHRH analog with a Drug Affinity Complex extending half-life to ~8 days. Sustained GH and IGF-1 elevation drives muscle, fat loss, recovery, and skin/anti-aging benefits.

1-2 mg1-2x per week

Cagrilintide

Weight Loss

Long-acting amylin analog. Hits brain appetite-regulation centers to drive satiety and slow gastric emptying. Stacks well with GLP-1 agonists (semaglutide / tirzepatide) for compounded fat-loss results.

0.1-0.6 mgOnce weekly

DSIP (Delta Sleep-Inducing Peptide)

Sleep & Recovery

A neuropeptide that promotes delta wave (deep) sleep. Discovered in 1977 from cerebral venous blood of sleeping rabbits. Normalizes sleep architecture, reduces stress-related insomnia, and may regulate cortisol and LH release.

100-300 mcgOnce daily

Dermorphin

Healing & Recovery

A heptapeptide originally found in the skin of South American frogs. Extremely potent mu-opioid receptor agonist — 30-40x more potent than morphine. Used in research for pain management. Not for casual use due to potency.

50-200 mcgAs needed

Dihexa

Cognitive Enhancement

An angiotensin IV analog that is millions of times more potent than BDNF at promoting neural connections. Studied for Alzheimer's and cognitive decline. Extremely potent — effective at very low doses.

10-20 mgOnce daily (oral or sublingual)

Epithalon

Anti-Aging

Synthetic tetrapeptide mimicking the pineal-gland peptide epithalamin. Studied for telomerase activation, DNA repair support, immune enhancement, and sleep/circadian regulation. A staple of anti-aging and longevity protocols.

10 mgDaily, split AM 5 mg + PM 5 mg

FOXO4-DRI

Anti-Aging

A cell-penetrating peptide that selectively induces apoptosis (programmed cell death) in senescent cells. A true senolytic agent — clears zombie cells that accumulate with age and drive inflammation, tissue dysfunction, and aging.

5-10 mgEvery 3 days

GHK-Cu

Anti-Aging

Naturally occurring copper peptide. Drives tissue regeneration, collagen and hair growth, and reduces inflammation. Used widely in anti-aging and cosmetic protocols; systemic benefits when administered subcutaneously.

5-10 mgDaily microdoses or 2-3 larger injections weekly

GHRP-2

GH Secretagogues

Growth Hormone Releasing Peptide-2. More potent GH release than GHRP-6 with less appetite stimulation. Good balance of efficacy and side effects. Increases GH, IGF-1, and also has slight cortisol and prolactin elevation.

100-300 mcg2-3 times daily

GHRP-6

GH Secretagogues

Growth Hormone Releasing Peptide-6. Potent GH secretagogue that also strongly stimulates appetite via ghrelin activation. Useful for those wanting to increase both GH levels and caloric intake for mass building.

100-300 mcg2-3 times daily

GLOW (BPC-157 + GHK-Cu + TB-500)

Healing & Recovery

Synergistic peptide blend: 10 mg BPC-157, 10 mg TB-500, 50 mg GHK-Cu per vial. Deep tissue repair, inflammation reduction, collagen and skin regeneration. One injection covers what would otherwise be three.

1.6 mgDaily

Glutathione

Anti-Aging

The body's master antioxidant — a tripeptide (glutamate, cysteine, glycine) produced in every cell. Neutralizes free radicals, supports detoxification, brightens skin, and supports immune function. Levels decline with age and illness.

200-600 mg2-3 times per week

HCG (Human Chorionic Gonadotropin)

Hormonal Support

Mimics luteinizing hormone (LH); stimulates the testes to produce testosterone and sperm. Used in TRT support, fertility, and post-cycle therapy to preserve testicular function and prevent atrophy.

500-1000 IU2-3x per week (e.g., Mon/Wed/Fri)

HGH Fragment 176-191

Weight Loss

The fat-burning fragment of human growth hormone (amino acids 176-191). Stimulates lipolysis and inhibits lipogenesis without the growth-promoting or diabetogenic effects of full HGH. Similar to AOD-9604 but slightly different structure.

250-500 mcgTwice daily

HMG (Human Menopausal Gonadotropin)

Hormonal Support

A purified preparation containing FSH and LH activity. Used in fertility treatments for both men and women. In men, stimulates both testosterone production (via LH) and spermatogenesis (via FSH). More complete gonadotropin support than HCG alone.

75-150 IUEvery other day

Hexarelin

GH Secretagogues

One of the strongest GHRP peptides for growth hormone release. Also has cardioprotective properties and can strengthen cardiac tissue. More potent GH release than Ipamorelin but with more side effects (cortisol, prolactin elevation).

100-200 mcg2-3 times daily

IGF-1 LR3

GH Secretagogues

Long-acting analog of Insulin-like Growth Factor 1. The LR3 modification extends its half-life to ~20 hours. Promotes muscle growth, recovery, and hyperplasia (new muscle cell formation). Significantly more potent than natural IGF-1.

20-50 mcgOnce daily

Ipamorelin

GH Secretagogues

Selective GH secretagogue that triggers GH release without bumping cortisol or prolactin. One of the cleanest tolerated GH-releasing peptides; commonly stacked with CJC-1295 (no DAC) for pulsatile secretion.

100-300 mcg1-3x daily (AM, post-workout, PM)

KLOW (BPC-157 + TB-500 + GHK-Cu + KPV)

Healing & Recovery

Advanced healing and anti-inflammatory blend: 10 mg BPC-157, 10 mg TB-500, 50 mg GHK-Cu, and 10 mg KPV per vial. KPV adds gut-protective and immune-modulatory action on top of the GLOW base.

1.6 mgDaily

KPV

Immune & Thymic

A tripeptide derived from alpha-MSH (alpha-melanocyte-stimulating hormone). Potent anti-inflammatory that inhibits NF-kB signaling. Effective for gut inflammation, skin conditions, and systemic inflammation without immunosuppression.

200-500 mcgOnce daily

Kisspeptin-10

Hormonal Support

Synthetic version of a peptide that initiates GnRH release. Central regulator of the reproductive hormone cascade — boosts LH, testosterone, and supports fertility in both men and women.

100-200 mcgDaily or 3-5x/week (e.g., Mon-Fri)

LL-37

Immune & Thymic

Naturally occurring antimicrobial peptide from the innate immune system (cathelicidin family). Antibacterial, antifungal, antiviral activity; modulates inflammation and accelerates wound healing. Used for chronic infections (sinus, gut, Lyme, mold), biofilms, and autoimmune/inflammatory conditions.

100-500 mcg1x daily (every other day if sensitive)

MK-677 (Ibutamoren)

GH Secretagogues

An oral growth hormone secretagogue that mimics ghrelin. Not technically a peptide but a non-peptide agonist of the ghrelin receptor. Taken orally, making it convenient. Significantly increases GH and IGF-1 levels.

10-25 mgOnce daily (oral)

MOTS-c

Weight Loss

Mitochondrial-derived peptide regulating metabolic function. Improves insulin sensitivity, drives fat loss, boosts physical performance, and supports longevity via AMPK activation.

5-15 mgTotal weekly dose, split across 3x weekly injections

Melanotan 1 (Afamelanotide)

Tanning & Melanocortin

A linear alpha-MSH analog that stimulates melanogenesis (melanin production) in the skin. FDA-approved as Scenesse for erythropoietic protoporphyria. Provides UV-free tanning and photoprotection. Safer profile than MT-2 with fewer side effects.

0.5-1 mgOnce daily

Melanotan 2

Tanning & Melanocortin

A cyclic melanocortin peptide analog that stimulates melanin production for skin tanning. Also has effects on sexual arousal and appetite suppression. More potent than MT-1 but with more side effects including nausea and mole darkening.

0.25-0.5 mgOnce daily during loading, then 1-2x/week

NAD+ (Nicotinamide Adenine Dinucleotide)

Anti-Aging

Vital coenzyme in cellular energy metabolism, DNA repair, and healthy aging. Injectable supplementation enhances mitochondrial function, mental clarity, fatigue recovery, and longevity. Common in anti-aging, detox, and performance protocols.

50-250 mg2-3x per week, daily in intensive protocols

Oxytocin

Hormonal Support

The 'love hormone' — a neuropeptide produced in the hypothalamus. Promotes social bonding, trust, empathy, and reduces anxiety. Used medically to induce labor and treat postpartum bleeding. Also studied for autism and social anxiety disorders.

10-24 IU1-2 times daily (nasal spray)

PT-141 (Bremelanotide)

Sexual Health

Melanocortin receptor agonist FDA-approved for hypoactive sexual desire disorder (Vyleesi). Works centrally in the brain to increase sexual desire and arousal. Effective in both men and women.

0.5-1.0 mgAs needed (max 8 doses/month, max 1/24 hours)

Retatrutide

Weight Loss

Triple agonist (GLP-1 + GIP + glucagon). Investigational compound under clinical trial; aggressive weight-loss and metabolic improvement signal beyond semaglutide or tirzepatide. Provided here as laboratory/research reference only — not yet FDA-approved.

0.25-1.0 mg3x weekly, titrate up as tolerated

SLU-PP-332

Weight Loss

Novel purinergic-receptor agonist investigated for metabolism, fat oxidation, endurance capacity, and mitochondrial function. May produce endurance-like effects without cardiovascular stimulation.

250-500 mcg3x weekly (M/W/F), or daily for aggressive cycles

SNAP-8

Anti-Aging

An octapeptide that mimics the N-terminal end of SNAP-25, competing with natural SNAP-25 for positions in the SNARE complex. Reduces neuromuscular activity, smoothing wrinkles similarly to botulinum toxin but non-toxic. Primarily used topically.

100-500 mcgOnce daily (topical or injection)

SS-31 (Elamipretide)

Anti-Aging

A mitochondria-targeted tetrapeptide that penetrates cell membranes and concentrates in mitochondria. Stabilizes cardiolipin, restores electron transport chain function, and reduces oxidative stress. Being developed for mitochondrial diseases and heart failure.

1-2 mgOnce daily

Selank

Cognitive Enhancement

Synthetic peptide derived from tuftsin. Anxiolytic, antidepressant, and cognitive-enhancing effects. Reduces anxiety, sharpens mental clarity, modulates the immune system. Administered intranasally for fast CNS absorption.

250-500 mcg1-2x daily

Semaglutide

Weight Loss

GLP-1 receptor agonist. Increases insulin secretion, blunts appetite, slows gastric emptying. Originally developed for type 2 diabetes; now the dominant peptide in the fat-loss landscape. Provided here as research/laboratory reference.

0.25-1.0 mgOnce weekly

Semax

Cognitive Enhancement

Synthetic peptide derived from ACTH. Nootropic with neuroprotective, cognitive-enhancing, and mood-regulating effects. Boosts BDNF expression; sharpens memory, focus, and stress resilience. Administered intranasally.

300-1000 mcg1-2x daily

Sermorelin

GH Secretagogues

A GHRH analog (GRF 1-29) that stimulates the pituitary to produce and release growth hormone naturally. FDA-approved for GH deficiency diagnosis. Preserves natural GH pulsatility and feedback mechanisms.

200-300 mcgOnce daily

Survodutide

Weight Loss

Dual GLP-1/glucagon receptor agonist developed by Boehringer Ingelheim. Targets both appetite reduction and increased energy expenditure. Shows promise for both weight loss and NASH/fatty liver disease treatment.

0.5-6 mgOnce weekly

TB-500

Healing & Recovery

Synthetic Thymosin Beta-4. Drives cell migration, soft-tissue regeneration, and inflammation reduction. Goes after tendons, ligaments, and muscle injury.

1 mg3x weekly (e.g., Mon/Wed/Fri)

TB4-FRAG

Healing & Recovery

A fragment of Thymosin Beta-4 (amino acids 17-23), also known as Ac-SDKP. Provides targeted anti-inflammatory and anti-fibrotic properties with fewer systemic effects than full TB-500.

200-750 mcgOnce daily

Tesamorelin

GH Secretagogues

GHRH analog that stimulates natural HGH production. FDA-approved for visceral adipose reduction. Improves body composition, reduces fat mass, supports lean muscle, and offers cognitive and anti-aging benefits.

1 mgOnce daily, 5 days per week (e.g., Mon-Fri)

Thymalin

Immune & Thymic

A thymic peptide bioregulator containing a complex of polypeptides from the thymus gland. Developed in Russia for immune restoration. Normalizes T-cell ratios, enhances immune surveillance, and has anti-aging properties related to immune function.

10 mgOnce daily

Thymosin Alpha-1

Immune & Thymic

A thymic peptide that modulates the immune system by enhancing T-cell function and dendritic cell activity. FDA-approved in over 35 countries (as Zadaxin) for hepatitis B and C. Powerful immune modulator without overstimulation.

1.6 mgTwice per week

Tirzepatide

Weight Loss

Dual GIP and GLP-1 receptor agonist. Amplifies insulin response, blunts appetite, drives fat loss with stronger glycemic control than semaglutide alone. Provided for research/laboratory reference.

1.25-5.0 mgTwice weekly (e.g., Mon/Thu or Tue/Fri)

VIP (Vasoactive Intestinal Peptide)

Immune & Thymic

A neuropeptide with potent anti-inflammatory and immunoregulatory properties. Used in chronic inflammatory response syndrome (CIRS), mold illness, and autoimmune conditions. Regulates innate immune response and reduces TGF-beta.

50 mcg4 times daily (nasal spray)
52 of 52 peptides shown