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20% off your first order with code PEPTIDE20 — Free shipping on orders $100+ · Third-party tested · 1–3 day delivery August 18, 2026 NAD+ Dosage: How Much Is Used in Research Human NAD+ trials tested precursors, not NAD+ itself. NR trials used up to 1000mg dai

Written by Peptide Therapy Guide Editorial Team
For education only

This guide cannot diagnose a condition or recommend a personal treatment plan. Discuss medical questions with a qualified professional.

20% off your first order with code PEPTIDE20 — Free shipping on orders $100+ · Third-party tested · 1–3 day delivery

August 18, 2026

NAD+ Dosage: How Much Is Used in Research

Human NAD+ trials tested precursors, not NAD+ itself. NR trials used up to 1000mg daily, NMN trials 250mg. Direct NAD+ dosing has almost no record.

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August 18, 2026

Ipamorelin Dosage: How Much Is Used in Research

The one human trial infused 0.03mg/kg IV twice daily for post-surgical gut motility, then development stopped. Every other ipamorelin figure is convention.

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August 17, 2026

MOTS-c Dosage: How Much Is Used in Research

Mouse protocols used 0.5-5mg/kg/day injected, for up to 8 weeks (Lee 2015). No human trial has dosed MOTS-c. What the rodent record actually reports.

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August 13, 2026

GHK-Cu Dosage: How Much Is Used in Research

GHK-Cu protocols split by route: topical studies cluster at 0.1-2%, injectable work uses far less, and copper load sets the ceiling. What the literature used.

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August 11, 2026

Tesamorelin Dosage: How Much Is Used in Research

Published tesamorelin trials converged on 2mg once daily, subcutaneous. What the clinical literature actually used, and what it does not establish.

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August 11, 2026

Klow vs. Glow Peptide: What's the Difference? (2026)

Klow is Glow plus KPV, at roughly 2.5x the GHK-Cu. The composition-by-composition comparison, what KPV adds, and how researchers choose between them.

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July 22, 2026

SS-31 (Elamipretide): FDA Approval, Forzinity, and What It Means for Research

Elamipretide just won FDA accelerated approval as Forzinity for Barth syndrome — but research-grade SS-31 is a different, unapproved product. Here's what the completed human trials actually found. For research use only.

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July 22, 2026

Oxytocin Nasal Spray: A Research Buyer's Guide

For oxytocin research, prioritize a verified lot-specific COA, ≥98% HPLC purity, and full excipient disclosure. What the intranasal literature shows and what to check before sourcing. For research use only.

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July 22, 2026

Selank Dosage & Benefits: What the Research Shows

Published Selank research spans one Russian human anxiety trial and a handful of rodent studies on GABA, enkephalin, and BDNF pathways — but there's no established human dosing protocol. For research use only.

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July 11, 2026

AHK-Cu vs GHK-Cu: Copper Peptides for Hair Research

AHK-Cu (Copper Tripeptide-3) and GHK-Cu (Copper Tripeptide-1) are structurally distinct copper peptides — GHK-Cu has the broader hair/skin literature, AHK-Cu is studied more narrowly for follicular vascularization, and both remain preclinical. For research use only.

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July 10, 2026

Best Peptide Companies for Research (Ranked)

The best peptide company is one that proves identity and purity per batch with independent tests and delivers high-quality peptides in formats that fit your needs.

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July 9, 2026

What Is the Dream Catcher Peptide? DSIP Sleep Research

“Dream Catcher” is DSIP, a sleep-related peptide studied for slow-wave sleep and stress/HPA effects since the 1970s. The research is decades deep but mixed, with limited human evidence. For research use only.

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July 7, 2026

GHK-Cu: Nasal vs Topical vs Sublingual Formats Compared

Format dictates GHK-Cu delivery, target access, and which studies apply. How topical, nasal, sublingual, and injectable formats compare for research design. For research use only.

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July 6, 2026

Semax vs Selank: Nootropic Peptides Compared (Research)

Semax and Selank share a nasal-spray format and Russian research origin but are structurally unrelated: Semax is studied for cognition and neuroprotection, Selank for anxiety and immune-linked effects. For research use only.

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July 5, 2026

GHK-Cu Before & After: What the Research Shows

What the published research actually shows for GHK-Cu “before and after” — collagen synthesis, skin density, and hair follicle findings across in vitro, animal, and small human topical studies. For research use only.

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June 13, 2026

What Is a Peptide? The Complete Beginner's Guide

Peptides are short amino acid chains whose sequence determines their role, from hormones and immune signals to skin and collagen support.

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June 11, 2026

Peptide Nasal Spray vs. Injection: Bioavailability Compared

Injectable peptides give higher, more predictable whole-body exposure. Nasal sprays shine for brain-targeted peptides, faster onset, and needle-free convenience.

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June 10, 2026

BPC-157 vs. TB-500: Research Comparison

BPC-157 promotes gut/organ repair. TB-500 leans connective tissue and cardiac repair. Neither has strong human data, and both are banned in drug-tested sport.

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June 9, 2026

What Is TB-500? Thymosin Beta-4 Fragment Research

TB-500 shows promising repair effects in animal studies but isn’t an approved drug; human data and long-term safety are still emerging, so use with informed caution.

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June 9, 2026

Peptides Studied for Tissue Repair & Regeneration

How peptides like BPC-157, TB-500, GHK-Cu and growth-hormone secretagogues are being studied as signaling molecules to support the phases of tissue repair — across tendon, cartilage, ligament, muscle and bone — and an honest look at the animal-to-human evidence gap.

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June 8, 2026

How to Use a Peptide Nasal Spray: Researcher's Guide

A researcher's guide to peptide nasal sprays: why intranasal delivery bypasses the gut and can reach the CNS, correct step-by-step technique, compound-specific notes for BPC-157, TB-500, GHK-Cu and VIP, plus storage and dosing principles.

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June 2, 2026

Are Research Peptides Legal? A State-by-State Guide

Peptide legality depends on the compound, its intended use, and its legal category: FDA-approved drugs, compounded preparations, research-use-only chemicals, and cosmetics each sit under different rules. A practical guide to where each one stands in the US.

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June 2, 2026

How to Choose a Research Peptide Supplier

A practical checklist for vetting research peptide suppliers: what a legitimate batch-specific COA must include, why third-party HPLC and mass-spec testing matter, net peptide content vs. gross weight, and the red flags that should make you walk away.

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May 26, 2026

What Is GHK-Cu? Copper Tripeptide-1 Research

GHK-Cu improves skin firmness and texture in small human trials; injectables remain experimental and should only be used under medical supervision.

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May 25, 2026

What Is BPC-157? Research, Mechanisms & Science

BPC-157 is a decades-old synthetic peptide derived from a stomach protein, now gaining buzz from anecdotal healing reports and its addition to WADA's banned list.

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May 13, 2026

Pal-GHK

PAL-GHK is a skin-friendly peptide combined with palmitic acid to boost stability and absorption, helping support smoother, stronger, and healthier skin.

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April 4, 2026

Do Peptides Need to Be Refrigerated?

A practical guide to peptide storage temperatures, why refrigeration matters, and how improper storage can compromise your research compounds.

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April 4, 2026

Lyophilized vs. Non-Lyophilized Peptides: A Comparison

Understanding the differences between lyophilized (freeze-dried) and non-lyophilized peptide formats, their stability profiles, and when each form is preferred for research applications.

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April 4, 2026

How Long Do Peptides Last After Reconstitution?

A comprehensive guide to peptide stability after reconstitution, including storage best practices, degradation timelines, and how to maximize the useful research life of your peptides.

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April 4, 2026

What Happened to Gorilla Healing?

An examination of what happened to the peptide supplier Gorilla Healing, why they disappeared from the market, and what researchers should look for in a reliable peptide source.

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Peptide Therapy Guide Editorial Team

Editorial team for Peptide Therapy Guide.

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