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    Peptide Research

    How peptides work, why protocols are structured the way they are, and what to expect — organized by topic.

    Ask FoxAIPeptide research chat backed by the PeptideFox knowledge graph and peer-reviewed papers.

    Featured

    Are Peptides Legal? Why the Answer Reveals More About Pharma Economics Than Safety

    Peptides are century old therapeutics — insulin, oxytocin, GLP-1 drugs. So why did the FDA restrict dozens of them? The answer is structural, not scientific.

    Read guide→

    SS-31, MOTS-c, & NAD+The Mito Stack

    How SS-31 and MOTS-c work together with NAD+ to restore cellular energy, improve metabolic health — and combat GLP-1 fatigue. Full protocol and dosage details.

    Read guide→

    Oral GLP-1sWegovy vs Orforglipron

    There's now a pill version of semaglutide, and orforglipron is coming. How they compare on weight loss, side effects, and cost — and if its right for you.

    Read guide→

    PinealonNeuroprotection & Cognitive Support

    Pinealon (EDR) protects neurons from oxidative damage. Dosing, what the evidence actually shows, and how it differs from Semax for cognitive support.

    Read guide→

    Reconstitute Peptides - A Visual GuideSwirl, Don't Shake

    Step-by-step walkthrough of BAC water types, needle gauges, techniques, water volume by peptide vial size, and storage — and the common mistakes to avoid at each step.

    Read guide→

    NAD+ for RetatrutidePrevent the Energy Crash & Enhance Fat Loss

    Retatrutide creates a powerful caloric deficit, but needs NAD+ to oxidize fat and prevent energy crashes. Full protocol — dosing, timing, and what to expect.

    Read guide→

    Protocols

    BPC-157 + TB-500The Wolverine Stack for Injuries

    How to combine BPC-157 and TB-500 for injury recovery. Dosing, weekly schedule, cycle length, and what to expect as you heal.

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    Injury Recovery ProtocolBuild the Right Peptide Stack

    Peptide protocol for injury recovery — built on BPC-157 + TB-500 with situational additions for tendon, joint, shoulder, disc, and post-surgical injuries.

    Read guide→

    Immune Peptide ProtocolTA1, KPV, NAD+ & More

    Peptides for immune support work best as a phased protocol — NAD+, Selank, glutathione, KPV, thymosin alpha-1, and thymulin sequenced with dose and safety data.

    Read guide→

    Circadian Reset ProtocolVIP, DSIP, Pinealon & Epitalon

    How to reset circadian rhythm with a peptide stack of VIP, Selank, DSIP, Pinealon, and Epitalon. Diagnostic framework, 24-hour timing map, and evidence.

    Read guide→

    GLOW & KLOWProtocols for Anti-Aging & Skin Health

    GLOW peptide cocktail of GHK-Cu, BPC-157, and TB-4 for skin rejuvenation. KLOW adds KPV for inflammation. How to choose — plus dosing and protocol guides.

    Read guide→

    NAD+ for RetatrutideCritical Support Layer for GLP-1s

    Retatrutide creates a powerful caloric deficit, but needs NAD+ to oxidize fat and prevent energy crashes. Full protocol — dosing, timing, and what to expect.

    Read guide→

    Retatrutide: Advanced StackDual-Axis Protocol to Protect Lean Mass

    A novel protocol for Retatrutide to preserve lean mass and shift your metabolism to prefer fat for energy using MOTS-c, Tesamorelin, L-Carnitine, and NAD+.

    Read guide→

    NAD+ and MOTS-c for EnergyThe Two-Compound Mito Stack

    The NAD+ and MOTS-c stack restores the cellular adaptation loop that metabolic stress and age erodes, increasing energy by burning fat for fuel. Full protocol with dosing breakdowns and a 12-week timeline.

    Read guide→

    SS-31, MOTS-c, & NAD+The Peptide Stack for Youthful Energy

    How SS-31 and MOTS-c work together with NAD+ to restore cellular energy, improve metabolic health — and combat GLP-1 fatigue. Full protocol and dosage details.

    Read guide→

    GLP-1s

    Compound Guides

    SemaglutideOzempic•Wegovy

    Semaglutide dosing ranges from 0.25mg to 2.4mg a week. How much weight loss to expect by dose, side effects during titration, and if Ozempic or Wegovy is right for you.

    Read guide→

    TirzepatideMounjaro•Zepbound

    Tirzepatide dosing ranges from 2.5mg to 15mg. Explore trial data for weight loss, side effects vs. semaglutide, and if Mounjaro or Zepbound makes sense for you.

    Read guide→

    RetatrutideTriple-Agonist GLP-1

    Retatrutide is the next evolution of Ozempic and Mounjaro — hitting GLP-1, GIP, and glucagon receptors simultaneously — fundamentally altering metabolic health.

    Read guide→

    Deep Dives

    GLP-1 FatigueWhy It Happens and What Helps

    GLP-1 fatigue explained: why semaglutide, tirzepatide, and retatrutide cause tiredness, which compound causes more, and evidence-based fixes from protein to mitochondrial support.

    Read guide→

    GLP-1s and Cholesterol

    GLP-1 drugs also improve lipid panels—lowering triglycerides, shifting LDL, and reducing liver fat. Trial data for semaglutide, tirzepatide, and retatrutide.

    Read guide→

    Oral GLP-1 OptionsWegovy Pill•Orforglipron

    There's now a pill version of semaglutide, and orforglipron is coming. How they compare on weight loss, side effects, and cost — and if its right for you.

    Read guide→

    Support Stacks for GLP-1sPreserving Lean Mass

    Semaglutide and Tirzepatide can cause up to 40% muscle loss. Learn why, what 'Ozempic face' actually is, and the evidence-based protocol to prevent it.

    Read guide→

    Protocols

    NAD+ for RetatrutideCritical Support Layer for GLP-1s

    Retatrutide creates a powerful caloric deficit, but needs NAD+ to oxidize fat and prevent energy crashes. Full protocol — dosing, timing, and what to expect.

    Read guide→

    NAD+ and MOTS-c for EnergyThe Two-Compound Mito Stack

    The NAD+ and MOTS-c stack restores the cellular adaptation loop that metabolic stress and age erodes, increasing energy by burning fat for fuel. Full protocol with dosing breakdowns and a 12-week timeline.

    Read guide→

    Retatrutide: Advanced StackDual-Axis Protocol to Protect Lean Mass

    A novel protocol for Retatrutide to preserve lean mass and shift your metabolism to prefer fat for energy using MOTS-c, Tesamorelin, L-Carnitine, and NAD+.

    Read guide→

    Peptides

    Articles

    Are Peptides Legal?Regulatory Economics Explained

    Peptides are century old therapeutics — insulin, oxytocin, GLP-1 drugs. So why did the FDA restrict dozens of them? The answer is structural, not scientific.

    Read guide→

    How to Stack PeptidesThe Complete Guide

    Most peptide stacks are guesswork. This five-axis framework maps every peptide to the biological system it affects in order to build synergistic protocols.

    Read guide→

    Where to Inject PeptidesCompound-Level Breakdown

    Where to inject BPC-157, TB-500, GHK-Cu, semaglutide, tirzepatide, NAD+, and more. Why injection site matters differently for each compound — and when it doesn't.

    Read guide→

    GH Releasing PeptidesSecretagogue Comparison

    Tesamorelin, Sermorelin, and every GH secretagogue ranked by clinical evidence in one table. Compound profiles, selectivity data, combination synergies.

    Read guide→

    Anti-Aging

    NAD+Injections & IV Therapy

    Deep dive into the coenzyme taking the wellness world by storm — what claims hold up? Plus, protocols for NAD+ peptide therapy.

    Read guide→

    SS-31Elamipretide

    SS-31 (elamipretide) is FDA-approved for Barth syndrome and targets mitochondria directly — How it works, off-label use for energy and longevity, and dosing in the Mito Stack.

    Read guide→

    GHK-CuCopper Peptide

    GHK-Cu is a copper peptide that remodels skin, fades scars, and may help with hair loss. Topical vs injectable protocols, timelines, and what to expect.

    Read guide→

    EpitalonTelomerase Activator

    Epitalon activates telomerase, and is directly linked to biological aging. Dosing protocols, what the Russian research shows, and if its worth consideration.

    Read guide→

    PinealonNeuroprotective Peptide

    Pinealon (EDR) protects neurons from oxidative damage. Dosing, what the evidence actually shows, and how it differs from Semax for cognitive support.

    Read guide→

    Metabolic / GH

    MOTS-cMitochondrial Peptide

    MOTS-c is a peptide that mimics the metabolic benefits of exercise — learn why it's a cornerstone of the Mito Stack with SS-31 and NAD+

    Read guide→

    AOD-9604Fat Loss Fragment

    Anti-Obesity Drug 9604 is an abandoned research peptide that still has a niche as a fat-loss accelerant in conjunction with GLP-1 weight loss therapy.

    Read guide→

    TesamorelinGHRH Analog

    Tesamorelin is the only FDA-approved GH secretagogue. Explore Phase III trial data, VAT reduction percentages, side effects, and how it compares to HGH.

    Read guide→

    SermorelinPioneer GH Peptide

    Sermorelin was FDA-approved in 1997 and withdrawn in 2008 — not for safety, but business. Here is what the clinical evidence actually shows today.

    Read guide→

    Healing & Tissue Repair

    BPC-157Body Protection Compound

    BPC-157 and Pentadeca Arginate (PDA): how the repair peptide works, dosing protocols, regulatory status, and what the arginate salt actually changes.

    Read guide→

    TB-500Thymosin Beta-4 frag 17-23

    TB-500 enables cell migration for tissue repair. How it works, dosing protocols, human clinical data, and how to combine it with BPC-157.

    Read guide→

    ARA-290Cibinetide

    ARA-290 is the first peptide shown to regenerate small fiber nerves. How it works, what the clinical trials found, and current dosing protocols.

    Read guide→

    Immune

    Thymosin Alpha-1Immune Re-Education

    Thymosin alpha-1 (TA1) modulates immunity by expanding regulatory T-cells, not suppressing them. Mechanism, clinical evidence, safety, and FDA status.

    Read guide→

    KPVAnti-Inflammatory Tripeptide

    KPV is a tripeptide from alpha-MSH that blocks NF-kB via a receptor-independent PepT1 pathway. Preclinical gut, skin, and TBI evidence reviewed.

    Read guide→

    VIPImmune Tolerance Orchestrator

    Vasoactive intestinal peptide (VIP) is a 28-amino-acid neuropeptide that orchestrates immune tolerance, gut barrier integrity, and circadian synchronization.

    Read guide→

    Cognitive

    SemaxNeuroprotection & Cognitive Restoration

    Semax drives neuroplasticity with the same mechanism behind exercise'\''s cognitive benefits. Injection and nasal dosage — plus 40 years of Russian clinical data.

    Read guide→

    SelankCalming Anxiety Without Sedation

    Selank calms anxiety without sedation, cognitive dulling, or dependence — How it works, Russian clinical trial data, and dosing for injection and nasal spray.

    Read guide→

    Other

    MelanotanMT-I vs MT-II Pharmacology

    Melanotan I and II compared — receptor selectivity, clinical trials, melanoma evidence, gray-market risks, and next-generation melanocortin agents.

    Read guide→

    DSIPSleep Architecture Peptide

    DSIP (delta sleep-inducing peptide) modulates slow-wave sleep architecture without sedation. Evidence review, circadian context, and dosing guide.

    Read guide→

    Guides

    How to Reconstitute PeptidesStep-by-Step Visual Guide

    Step-by-step walkthrough of BAC water types, needle gauges, techniques, water volume by peptide vial size, and storage — and the common mistakes to avoid at each step.

    Read guide→

    Support Stacks for GLP-1sPreserving Lean Mass

    Semaglutide and Tirzepatide can cause up to 40% muscle loss. Learn why, what 'Ozempic face' actually is, and the evidence-based protocol to prevent it.

    Read guide→

    How to Stack PeptidesThe Complete Guide

    Most peptide stacks are guesswork. This five-axis framework maps every peptide to the biological system it affects in order to build synergistic protocols.

    Read guide→