Peptide research has grown from a niche corner of academic biochemistry into one of the most active frontiers in human performance science, regenerative medicine, and cognitive optimization. Whether you are a first-time researcher trying to make sense of BPC-157 and tissue repair studies, or an experienced biohacker building advanced stacking protocols with CJC-1295 and Ipamorelin, the volume of scattered, inconsistent, and sometimes dangerously inaccurate information online makes informed decision-making genuinely difficult. PepGuide (pepguide.xyz) was built to solve that problem directly. This comprehensive PepGuide peptide reference guide consolidates peer-reviewed research citations, evidence-based dosing protocols, vendor accountability standards, and harm reduction frameworks into a single, independent, bias-free platform designed to serve both novice and expert peptide researchers.
What Is PepGuide and Why Does This Peptide Reference Guide Exist?
PepGuide is an independent peptide research database and educational platform available at pepguide.xyz. The platform was created in response to a persistent problem in the peptide research community: the overwhelming majority of publicly available information is either overly simplified to the point of being misleading, commercially motivated by vendor relationships, or so densely academic that it is inaccessible to most researchers without a pharmacology background.
The PepGuide model is built on three foundational principles. First, scientific literacy must be treated as non-negotiable. Every peptide profile, dosing framework, and mechanism of action explanation on the platform is grounded in peer-reviewed literature sourced from databases like PubMed and NCBI. Second, platform credibility requires transparency. PepGuide does not hide its methodology, its vendor evaluation criteria, or its research sourcing. Third, harm reduction must be woven into every layer of content. Peptide research carries real risks when approached without adequate preparation, and PepGuide treats researcher safety as a primary editorial obligation, not an afterthought.
What separates PepGuide from other peptide information websites is the combination of structured depth and genuine accessibility. Most platforms choose one or the other. PepGuide is designed with an information hierarchy that allows a complete beginner to understand what a peptide is and how to approach research safely, while also giving advanced researchers the mechanistic detail, comparative peptide analysis, and stacking protocol data they need to work intelligently.
The PepGuide Peptide Reference Guide Database: Structure, Scope, and Coverage
The PepGuide database organizes peptides into functional categories based on their primary mechanisms and research applications. These categories include tissue healing and repair, cognitive enhancement and nootropic research, metabolic and body composition compounds, growth hormone secretagogues, longevity and anti-aging peptides, and anxiolytic or stress-modulating compounds. This categorical structure allows researchers to navigate the platform based on their specific research objectives rather than having to know the exact name of a compound before they can find relevant information.
How Peptide Profiles Are Structured
Each peptide profile within the PepGuide database follows a consistent architecture designed to move researchers from foundational understanding through to practical application. A standard profile includes the following components: a molecular overview covering amino acid sequence, molecular weight, and structural classification; a mechanism of action section that explains cellular and molecular activity with supporting research citations; a bioavailability and administration route breakdown covering subcutaneous, intramuscular, and intranasal options where applicable; evidence-based dosing protocols drawn from preclinical and available clinical literature; a half-life and dosing frequency analysis rooted in pharmacokinetic data; reconstitution and storage guidelines; and a risk-benefit framework that identifies known adverse effects, contraindications, and research gaps.
This structure ensures that a researcher reading any profile on PepGuide walks away with a complete, layered understanding of the compound rather than a collection of disconnected facts. Research citations are embedded directly within the profile text and linked to their original PubMed or NCBI sources, so researchers can independently verify every claim the platform makes.
Featured Peptide Profiles: A Closer Look at Key Compounds
To illustrate the depth and practical utility of the PepGuide database, the following section provides a representative overview of several key peptides covered on the platform. These are not exhaustive summaries. They are intended to demonstrate the type of evidence-based content researchers can expect when accessing full profiles.
BPC-157: Tissue Repair and Gut Healing Research
BPC-157, or Body Protection Compound 157, is a synthetic pentadecapeptide derived from a protective protein found in gastric juice. It is one of the most extensively researched peptides in the PepGuide database and serves as the platform's flagship compound profile. Research published in journals indexed on PubMed has demonstrated BPC-157's involvement in tendon and ligament healing, gastrointestinal tract repair, angiogenesis stimulation, and neuroprotective activity in animal models. The peptide appears to upregulate growth hormone receptors and modulate nitric oxide production, two mechanisms that contribute broadly to its tissue repair properties.
From an administration standpoint, BPC-157 has demonstrated bioactivity through both subcutaneous injection and oral administration in preclinical studies, which makes it a relatively versatile compound from a research perspective. The PepGuide BPC-157 profile details the distinction between systemic and local administration outcomes, which is a nuance frequently overlooked in less rigorous information sources. Dosing protocols in the research literature typically range from 1 to 10 micrograms per kilogram of body weight in animal models, and the PepGuide profile contextualizes this data for human research frameworks while maintaining appropriate disclaimers about the extrapolation limitations involved.
5-Amino-1MQ: Metabolic Research Compound
5-Amino-1MQ is a small molecule compound that has attracted considerable attention in the metabolic research space due to its role as an inhibitor of NNMT, or nicotinamide N-methyltransferase, an enzyme involved in fat cell differentiation and energy metabolism. Studies suggest that NNMT inhibition may support fat mass reduction, improve metabolic rate, and influence NAD+ pathway activity, which connects 5-Amino-1MQ to broader longevity and cellular energy research. The PepGuide 5-Amino-1MQ profile situates this compound within the metabolic research category and provides a detailed breakdown of its proposed mechanism, available preclinical data, and appropriate sourcing considerations for researchers.
Because 5-Amino-1MQ is an emerging research compound with a more limited published literature base than established peptides like BPC-157, the PepGuide profile for this compound specifically flags the evidence gaps and emphasizes the importance of approaching this area of research with calibrated expectations and rigorous documentation of outcomes.
Thymosin Beta-4 (TB-500): Recovery and Angiogenesis
Thymosin Beta-4, commonly referenced in research settings as TB-500, is a naturally occurring peptide present in virtually all human and animal cells. Its primary research interest lies in its role in actin regulation, wound healing, angiogenesis, and anti-inflammatory activity. The PepGuide TB-500 profile draws on studies examining its effects on cardiac tissue repair, muscle regeneration, and hair follicle stimulation, providing a nuanced picture of a compound that is frequently oversimplified in popular biohacking discussions.
TB-500 is often compared to BPC-157 in the context of tissue repair research, and the PepGuide database includes a comparative peptide analysis that maps the overlapping and distinct mechanisms of these two compounds. This type of side-by-side analysis is one of the features that distinguishes PepGuide as a research tool rather than simply an information repository.
Growth Hormone Secretagogues: Ipamorelin and CJC-1295
Growth hormone secretagogues represent one of the most researched and discussed peptide subcategories in the biohacking community. Ipamorelin is a selective growth hormone secretagogue that stimulates GH release from the pituitary gland with minimal impact on cortisol and prolactin levels, which distinguishes it from less selective compounds in the same category. CJC-1295 is a GHRH analog that extends the half-life of growth hormone releasing hormone, leading to a more sustained elevation of GH levels when administered. These two compounds are frequently discussed together because their mechanisms are complementary, and stacking protocols combining Ipamorelin and CJC-1295 are among the most commonly researched advanced protocols in the PepGuide database.
The PepGuide profiles for both compounds include detailed half-life analysis and dosing frequency recommendations based on pharmacokinetic literature, helping researchers understand why the timing of administration matters as much as the dose itself. The stacking protocol section of the PepGuide database provides structured guidance for researchers who have reviewed the individual compound profiles and are ready to explore multi-peptide research frameworks.
Nootropic Peptides: Semax and Selank
Semax and Selank are two nootropic peptides developed in Russia with well-documented research histories in the Soviet and post-Soviet scientific literature. Semax is a synthetic analog of ACTH(4-7) and has been studied for its effects on BDNF expression, cognitive function, attention, and neuroprotection under ischemic conditions. It is administered primarily via intranasal delivery, and the PepGuide Semax profile includes a detailed breakdown of the intranasal absorption pharmacokinetics that make this route effective for CNS-targeted peptide research.
Selank is a synthetic analog of the endogenous peptide tuftsin and has been investigated for its anxiolytic properties, immune modulation activity, and effects on memory consolidation. Unlike many anxiolytic compounds studied in research settings, Selank does not appear to produce sedation or dependency risk in the available literature, which makes it a compound of particular interest to researchers working in the stress-modulation and cognitive optimization space. The PepGuide Selank profile traces the compound's mechanism through its interaction with the GABAergic system and enkephalin pathways, providing the mechanistic context that most brief online summaries omit entirely.
PepGuide Stacking Protocols: Multi-Peptide Research Frameworks
One of the most frequently requested content areas on PepGuide is structured stacking protocol guidance. A peptide stack refers to the deliberate combination of two or more peptide compounds within a research protocol, selected because their mechanisms are complementary, synergistic, or targeted at multiple aspects of the same physiological system. Stacking is a more advanced area of peptide research, and PepGuide approaches it with corresponding rigor.
The PepGuide stacking protocol library is organized around research objectives rather than individual compounds. A researcher interested in recovery optimization, for example, can access a structured framework covering the combination of BPC-157 and TB-500, including the rationale for their complementary mechanisms, the sequencing and dosing logic that emerges from pharmacokinetic data, and the monitoring markers that help researchers assess whether the protocol is producing the expected outcomes.
Similarly, the growth hormone optimization category within the stacking section covers the well-researched Ipamorelin and CJC-1295 combination in detail, including the timing rationale for pre-sleep administration, the importance of avoiding carbohydrate consumption around injection windows to preserve the natural GH pulse, and the distinction between protocols using CJC-1295 with DAC versus without DAC and how this choice affects dosing frequency and GH pulse character.
PepGuide is explicit about the increased complexity and risk that accompanies multi-peptide research. Every stacking protocol page opens with a preparatory checklist that requires the researcher to confirm they have reviewed the individual compound profiles for each peptide in the stack, understand the distinct risk profiles involved, and have appropriate reconstitution, storage, and administration materials in place before proceeding.
Vendor Verification and Sourcing Standards on PepGuide
Sourcing quality is one of the most consequential variables in peptide research, and it is also one of the most poorly covered topics in the broader peptide information ecosystem. PepGuide addresses this gap with a vendor verification framework that evaluates peptide suppliers against a standardized set of quality and transparency criteria.
The PepGuide vendor evaluation framework assesses suppliers across six dimensions. The first is third-party testing transparency, specifically whether the vendor provides current certificates of analysis from independent laboratories for each compound they sell, and whether those certificates verify purity, identity, and the absence of contaminants. The second dimension is laboratory accreditation, examining whether the testing laboratories used by the vendor hold recognized accreditations such as ISO 17025. The third is labeling accuracy, assessing whether the compound concentration and volume stated on the product label match the certificate of analysis values. The fourth is supply chain documentation, covering whether the vendor can provide meaningful information about the synthesis origin of their peptides. The fifth is customer communication standards, evaluating how vendors handle questions about testing, sourcing, and handling. The sixth is historical consistency, which tracks whether a vendor's quality standards have remained stable over time or shown evidence of degradation.
Vendors that meet PepGuide's threshold across these six dimensions are listed in the platform's verified vendor directory. Vendors that have documented quality failures, opaque testing practices, or concerning patterns in customer-reported outcomes are tracked in the platform's vendor accountability log, which is updated on a rolling basis as new information becomes available. This structure gives researchers a starting point for sourcing decisions that is grounded in documented evidence rather than affiliate incentives or anecdotal reputation.
Harm Reduction Framework: The Safety Layer Within PepGuide
Harm reduction is not a section of PepGuide. It is an architectural principle that shapes how every piece of content on the platform is written and structured. This distinction matters because harm reduction treated as a standalone section tends to be easy to skip. Harm reduction embedded into the flow of content tends to reach researchers at the moment they actually need it.
Within individual peptide profiles, harm reduction language appears in the reconstitution and storage section, where improper technique represents one of the most common sources of contamination risk. It appears in the dosing protocol section, where the concept of starting at the lower bound of the researched dose range is presented not as a conservative suggestion but as the logical application of standard pharmacological practice. It appears in the mechanism of action section wherever a compound's activity intersects with physiological systems that carry particular sensitivity, such as the HPA axis, the thyroid axis, or insulin signaling pathways.
PepGuide also maintains a dedicated harm reduction resource section that covers topics applicable across peptide research generally, rather than to specific compounds. These resources include a guide to recognizing and responding to injection site reactions, a framework for baseline bloodwork and monitoring protocols that researchers should consider before beginning any peptide research program, a guide to proper bacteriostatic water preparation and syringe handling technique, and an explanation of the legal and regulatory landscape surrounding peptide research compounds in major jurisdictions.
The platform does not position itself as a substitute for medical consultation. Every profile and protocol page includes explicit language directing researchers to consult a qualified healthcare provider before undertaking any research involving peptide compounds, particularly where pre-existing health conditions or concurrent medications are involved.
How to Use PepGuide as a Research Tool
PepGuide is designed to support structured, progressive research rather than impulsive compound selection based on trending discussions. The platform's recommended approach for new researchers begins with the foundational education section, which covers peptide biochemistry basics, an introduction to the different peptide categories, an overview of administration routes and their respective considerations, and a primer on how to read and critically evaluate research literature. This foundation is not optional content on PepGuide. It is framed as the prerequisite layer that makes everything else on the platform more useful and more safe to apply.
Once a researcher has moved through the foundational content, the recommended next step is to identify a single research objective and use the PepGuide categorical navigation to explore the compounds most relevant to that objective. Reading one or two complete compound profiles in detail, including all embedded citations, gives the researcher a realistic picture of what the evidence actually supports before any practical research decisions are made.
For researchers who are ready to move into active research protocols, PepGuide's reconstitution and administration guides provide step-by-step procedural coverage of the practical skills involved. These guides are written to be genuinely instructive rather than perfunctory, covering topics like calculating the correct volume of bacteriostatic water for a given peptide vial, how to calculate the dose volume from a known concentration, and how to store reconstituted peptides correctly to preserve stability over the research period.
Advanced researchers can use PepGuide's comparative analysis tools and stacking protocol library to build more sophisticated research frameworks, always with the understanding that increased protocol complexity carries increased responsibility for careful monitoring and documentation. PepGuide encourages all researchers to maintain detailed research logs, including compound source and batch information, dosing parameters, administration timing, and any observed outcomes or adverse effects, as this documentation is what makes individual research experiences meaningful and generalizable over time.
PepGuide's Commitment to Editorial Independence
Editorial independence is a structural feature of PepGuide, not a marketing claim. The platform's content team does not accept sponsored placements within peptide profiles, does not allow vendor relationships to influence the content of compound evaluations, and does not modify harm reduction language or evidence gap disclosures based on commercial considerations. Where PepGuide carries affiliate relationships with vendors who have met its verification standards, those relationships are disclosed transparently and do not affect the editorial content of compound profiles or vendor evaluations.
The platform's peer review process for new content involves independent evaluation by researchers with relevant domain expertise before publication. Existing content is reviewed and updated on a scheduled basis as new research becomes available, and the last-reviewed date is displayed on every profile so researchers can assess the currency of the information they are reading.
This commitment to independence is what makes PepGuide genuinely useful as a peptide reference guide rather than simply another information aggregator with a commercial agenda operating beneath a scientific veneer. In a research space where conflicts of interest are both common and consequential, structural independence is one of the most important features a platform can offer its users.