| name | peptide-research |
| title | Peptide Portal Compound Research |
| description | >- Search peptideportal.org for a peptide by name, alias, CAS number, or mechanism keyword and return a structured profile aggregating vendor pricing range and COA-verified status, the canonical research brief with use-case evidence tables, related dosing-guide blog posts, and the curated bibliography of clinical papers with PubMed outbound links. |
| website | peptideportal.org |
| category | research |
| tags | - peptides - research - pharmacology - vendor-comparison - clinical-papers - read-only |
| source | 'browserbase: agent-runtime 2026-05-19' |
| updated | '2026-05-19' |
| recommended_method | browser |
| alternative_methods | [] |
| verified | false |
| proxies | false |
Peptide Portal Compound Research
Purpose
Given a peptide name (e.g. BPC-157, tirzepatide), an alias (Body Protection Compound), a CAS number (137525-51-0), or a use-case keyword that maps to Peptide Portal's category taxonomy (GLP-1, GH secretagogue, tissue repair), return a structured profile aggregating:
- Vendor pricing β the aggregated
$ / mg range and vendor count (public), or the per-vendor catalog rows (auth-gated, see Gotchas).
- Purity / COA signal β the marketplace's
Verified / Unverified COA flag and the vendor's third-party-testing percentage.
- Research guide β the deep-link
/peptides/{slug} clinical brief (FDA status, evidence tables, comparison with similar compounds) and any /blog/{slug} topical guides that cite dosing data.
- Clinical paper references β the per-peptide bibliography at
/research/{slug}, where each paper has a dedicated detail page /research/{slug}/{uuid} linking out to PubMed.
Read-only β never click CREATE FREE ACCOUNT, Sign in, or GET ACCESS. Never submit the newsletter form.
When to Use
- Build a research dossier on one peptide before sourcing.
- Compare two peptides (e.g.
BPC-157 vs TB-500) β fetch both and diff the structured outputs.
- Surface the canonical published evidence index for a peptide (citations, study designs, models, indications) without re-scraping PubMed yourself β Peptide Portal already curates it per compound.
- Find which peptides on the catalog match a use-case keyword (
GLP-1, growth hormone, tissue repair, cognitive) and rank by COA-verified vendor count.
Workflow
Peptide Portal is a public Vercel/Next.js site with no anti-bot, no captcha, no Akamai gating for read paths. browse cloud sessions create with default flags works fine; --verified --proxies is not required for this site. All read URLs return server-rendered HTML (/api/* is blocked by robots.txt and returns 404, so there is no public JSON API to short-circuit to β the recommended method is browser).
There are four URL surfaces. Use them in this order:
1. Resolve the query to a peptide slug
If the user gave a known name, alias, or CAS:
-
Direct slug guess (fastest path β ~150ms): https://peptideportal.org/peptides/{kebab-name}. The catalog has 58+ slugs in the sitemap (/sitemap.xml). Examples: bpc-157, tb-500, tirzepatide, semaglutide, cjc-1295, ipamorelin, ghk-cu, mots-c, ll-37, kpv, selank, semax, epitalon. A 200 response means the slug is canonical; a 404 means try the global typeahead.
-
Global Cmd+K typeahead (fuzzy resolver β handles aliases, CAS, and vendor product names): on any page, click button: Search peptides, vendors, or CAS numbers. Press Command K to open. to open the dialog, then fill the combobox inside dialog: Search with the query. After ~1s the listbox under dialog: Search populates with up to three groups:
| Group label | What it contains |
|---|
Peptides | Catalog hits β peptide name + tagline + CAS. Click β /peptides/{slug}. |
Products | Per-vendor SKUs β name + vendor Β· peptide Β· category. Click β marketplace row. |
Actions | A Search marketplace for "{q}" fallback that navigates to /marketplace?q={q}. |
The typeahead substring-matches against peptide name, tagline (which contains use-case-ish phrases like "GLP-1 agonist", "GH secretagogue", "GIP / GLP-1 dual agonist"), CAS, and vendor product names. It does not map free-form use-case phrases β weight loss returns zero hits; the technical keyword glp returns Survodutide, Semaglutide, Tirzepatide cleanly. Lead with the canonical mechanism keyword, not the consumer phrase.
If the user gave a use-case keyword and the typeahead returns nothing, fall through to step 4 (browse the marketplace listing by category column).
2. Pull the research brief β /peptides/{slug}
browse open https://peptideportal.org/peptides/{slug} --remote then browse snapshot --remote. This is the canonical clinical brief and contains, in this fixed order, every section you need for the "research guide" output:
| Section heading (h2) | Extract |
|---|
Quick answer | One-paragraph plain-language summary. |
Key facts about {Name} | Q&A table: What is it? / Other names / Peptide class / Main mechanism / FDA status / Legal status / Banned in sports. |
What is {name} used for? | Use-case evidence table β columns USE, EVIDENCE LEVEL, WHAT IS KNOWN, WHAT IS NOT KNOWN. This is the canonical use-case β evidence-strength mapping. |
What does the research show? | Narrative + sub-headings Human evidence and Animal and laboratory evidence. |
Evidence summary | One-line evidence verdict. |
Is {name} FDA-approved? / legal? / banned in sports? | Regulatory triad β single-paragraph answers. |
Safety and side effects | Bulleted concern list. |
{Name} vs similar peptides | Comparison table: COMPOUND, CATEGORY, MAIN DIFFERENCE. |
Sources | Numbered list of references with outbound links to FDA, USADA, WADA, PubMed, OPSS, etc. Use this for citations even when /research/{slug} is empty. |
FAQ | DisclosureTriangle accordions; expand only if needed. |
The detail page does not list per-vendor pricing inline. Vendor pricing lives on /marketplace and /vendor/{slug} (step 3).
3. Pull vendor pricing + purity β /marketplace?q={name}
browse open https://peptideportal.org/marketplace?q={name} --remote then browse snapshot --remote. The result is a one-row table with columns PEPTIDE | CATEGORY | RESEARCH FOCUS | $ / MG RANGE | VENDORS | COA | EXPAND. The single matching row exposes, without authentication:
$ / mg range β aggregated minβmax (e.g. $5.00β$8.00 for BPC-157).Vendors β integer count of vendors carrying this peptide.COA β Verified (third-party tested across vendor mix) or Unverified.Category β short label (e.g. Body Protective Compound).Research Focus β taxonomy bucket (e.g. Tissue Repair Research).
Per-vendor breakdown is auth-gated. Clicking the Expand button on the row reveals a row whose only content is View {Name} vendors β Create a free account to compare pricing across verified vendors β CREATE FREE ACCOUNT | Sign in. Do not click. Report the aggregated row and stop; record vendors_per_vendor_breakdown: "auth_required" in the output schema.
For an individual vendor's profile (vendor score, catalog breadth %, third-party-testing %, established date, visible category bucket list β all public): https://peptideportal.org/vendor/{vendor-slug}. Vendor slugs are discoverable from /vendors (e.g. peptide-crafters, peptidology, peptide-partners, orbitrex-peptides, skye-peptides, alchemy-peptides, nulife-peptides, risynth-bio, biotech-peptides, peptime, eternal-peptides, atomik-labz, kerisite-peptide, zlz-peptide). Detail pricing and COA documents on vendor pages are also auth-gated β only the scorecard summary is public.
4. Pull the bibliography β /research/{slug} and /research/{slug}/{uuid}
browse cloud fetch https://peptideportal.org/research/{slug} --proxies works fine here (no JS needed β the bibliography list is server-rendered). Each paper is a card link with text shaped like:
{Author} {Year} β {Title}
{Citations} {Journal} Β· {Year} {Study type} {Model} {Topic} Source {Tag}
β¦where {Study type} is one of Preclinical | Pilot | Review | Animal RCT | Systematic Review | Case Report | Safety, {Model} is Cell | Animal | Rat | Human | In Vitro | Various, and the href is /research/{slug}/{uuid} (UUID v4). Hit the per-paper UUID page for: outbound PubMed/DOI link (under heading External Links), full structured details (Study Design, Indication, Intervention, Species, Risk of Bias Assessment, Tags), citation count, evidence-quality grade, and last-verified date.
Not every peptide has a /research/{slug} index β peptides without curated evidence return 200 with an empty list, not a 404. Fall back to the Sources list at the bottom of /peptides/{slug} (step 2) which is always populated and links directly to FDA / PubMed / USADA / WADA / OPSS / journal pages.
5. Pull dosing-protocol guides β /blog/{slug}
Peptide Portal deliberately does not publish prescriptive dosing on /peptides/{slug} for unapproved compounds β for BPC-157, TB-500, etc., the detail page repeatedly says "human dosing is not established." Cited dosing data lives on long-form guides under /blog, where the doses are quoted from specific clinical studies (e.g. the CJC-1295 + Ipamorelin guide cites "30 or 60 ΞΌg/kg" and "0.03 mg/kg twice daily" with study references).
Discover blog guides matching the peptide via the sitemap (/sitemap.xml lists all 35 blog slugs) or via a substring filter on slug names (bpc-157, tb-500, cjc-1295, ipamorelin, glp1, peptides-for-hair-growth, etc.). Fetch via browse cloud fetch https://peptideportal.org/blog/{slug} β these are SSR HTML, no JS rendering required.
6. Release the session
browse cloud sessions update "$BROWSE_SESSION" --status REQUEST_RELEASE
Site-Specific Gotchas
- Auth wall on per-vendor pricing. The marketplace shows aggregated
$ / mg range + vendor count + COA-verified flag publicly, but clicking Expand on any row reveals only a CREATE FREE ACCOUNT / Sign in paywall. Per-vendor SKU pricing, COA documents, and detailed vendor catalogs require an account. Report the aggregated public data and set a flag like per_vendor_pricing_visible: false in the output.
- Unauthenticated marketplace home is heavily curated.
/marketplace (no q=) returns only 13 products even though /sitemap.xml lists 58+ peptide slugs. The 13 are the most-trafficked GLP-1s, tissue-repair, and GH peptides. To verify a specific peptide is in the marketplace, hit /marketplace?q={name} directly β it works for the full catalog (not just the 13 featured rows) provided the peptide has any vendor coverage.
- Cmd+K typeahead substring-matches name, tagline, CAS, and product names β but not free-form use cases.
glp works (returns Survodutide, Semaglutide, Tirzepatide via the "GLP-1 agonist" and "GLP-1/glucagon dual agonist" taglines). weight loss returns zero peptide hits β only the Search marketplace for "weight loss" action fallback. Translate consumer phrases to mechanism keywords before submitting: weight loss β glp, obesity β glp, muscle gain β igf / ghrh, healing β bpc / tb-500, cognitive β selank / semax.
/peptides page-local searchbox is name-only. The searchbox: Search peptide guides by peptide name on the /peptides index filters cards by substring of peptide name only β does not match aliases, CAS, taglines, or categories. Use the global Cmd+K dialog for anything beyond name./peptides/{slug} detail page has no inline vendor pricing. Two link: Vendors anchors on the page navigate to the global /vendors page, not a per-peptide vendor block. Always pair /peptides/{slug} (research) with /marketplace?q={name} (pricing) β they are separate surfaces.- Dosing is intentionally absent from
/peptides/{slug} for unapproved compounds. Don't bother grepping the detail page for mg/kg β the page will say "human dosing is unclear." Cited doses live in /blog/{slug} guides instead, and only for compounds where clinical studies exist (CJC-1295 + Ipamorelin, semaglutide/tirzepatide titration, etc.). For unapproved peptides, the honest output is dosing_protocol: "no_human_protocol_published".
/research/{slug} exists for every peptide but is sometimes empty. A 200 response with an empty card list means "no curated papers" β not "peptide not found." Treat empty as a normal outcome and fall back to the Sources block on /peptides/{slug} (which is always populated with regulatory links + at least one PubMed reference for in-scope peptides).- Paper detail UUIDs are stable but per-peptide-namespaced. The same paper would have different UUIDs if it appeared under two peptides' research pages. Do not reuse a UUID across peptides; always re-derive from the parent
/research/{slug} index.
- External paper links are PubMed-only on
/research/{slug}/{uuid}. The detail page exposes a single outbound link: PubMed under heading External Links. No DOIs, no direct journal URLs. If the user needs a DOI, scrape PubMed by ID after this skill returns.
/api/* is robots-disallowed and returns the SPA shell at 404. There is no JSON shortcut for any of these surfaces β the recommended method is unambiguously browser. browse cloud fetch (HTTP-only path) works for /peptides/{slug}, /research/{slug}, /research/{slug}/{uuid}, /vendor/{slug}, /blog/{slug}, /sitemap.xml, and /marketplace?q={name} (these are SSR HTML) β use it instead of a full browser session when you just need to read text. The pages that require an active browser are the global Cmd+K dialog and the marketplace filter sidebar (their popups are JS-driven).- The "Compare verified vendors in one place" modal layers over
/marketplace. It is a paywall promo that does not dismiss without auth β but the underlying table is rendered behind it and browse snapshot traverses through. Don't waste turns trying to close it; snapshot still surfaces the row data.
- No CAS-number sanitization needed. CAS is exposed as a plain string with hyphens (
137525-51-0) β Cmd+K matches it with or without spaces.
- Sitemap is your fastest enumeration tool.
https://peptideportal.org/sitemap.xml lists every peptide slug, vendor slug, blog post, and research index, all under <loc> tags. Parse it once at the start of a bulk job instead of crawling.
Expected Output
A successful run returns one structured object per peptide. Three outcome shapes:
{
"success": true,
"query": "BPC-157",
"slug": "bpc-157",
"name": "BPC-157",
"aliases": ["Body Protection Compound-157", "PL 14736", "stable gastric pentadecapeptide BPC 157"],
"cas": "137525-51-0",
"category": "Body Protective Compound",
"research_focus": "Tissue Repair Research",
"fda_status": "not_approved",
"legal_status": "research_use_only",
"banned_in_sports": true,
"research_brief_url": "https://peptideportal.org/peptides/bpc-157",
"use_cases": [
{"use": "Tendon healing", "evidence_level": "Preclinical", "known": "Animal and cell studies suggest effects on tendon fibroblast migration, survival, and healing pathways.", "not_known": "Whether it reliably improves tendon healing in humans is not established."},
{"use": "Gut protection", "evidence_level": "Preclinical", "known": "Studied in gastrointestinal lesion and gastric integrity models.", "not_known": "Human benefit is unclear."}
],
"vendor_pricing": {
"marketplace_url": "https://peptideportal.org/marketplace?q=BPC-157",
"price_per_mg_range_usd": {"min": 5.00, "max": 8.00},
"vendor_count": 4,
"coa_status": "Verified",
"per_vendor_pricing_visible": false,
"per_vendor_pricing_gate": "auth_required"
},
"dosing_protocol": "no_human_protocol_published",
"related_guides": [
{"title": "BPC-157 vs TB-500 Recovery Comparison", "url": "https://peptideportal.org/blog/bpc-157-vs-tb-500-recovery-comparison"},
{"title": "FDA PCAC Meeting July 2026 β BPC-157, TB-500", "url": "https://peptideportal.org/blog/fda-pcac-meeting-july-2026-bpc-157-tb-500"}
],
"clinical_papers": {
"research_index_url": "https://peptideportal.org/research/bpc-157",
"total_papers": 14,
"papers": [
{
"title": "Chang 2011 β BPC-157 Promotes Tendon Fibroblast Outgrowth and Migration",
"detail_url": "https://peptideportal.org/research/bpc-157/82802990-98f4-4ce2-b6d3-75702b44ded4",
"pubmed_url": "https://pubmed.ncbi.nlm.nih.gov/21030672",
"journal": "Journal of Applied Physiology",
"year": 2011,
"citations": 202,
"study_type": "Preclinical",
"model": "Cell",
"indication": "Tendon healing mechanisms"
}
]
},
"regulatory_sources": [
{"title": "FDA: Certain Bulk Drug Substances for Use in Compounding May Present Significant Safety Risks", "url": "https://www.fda.gov/drugs/human-drug-compounding/certain-bulk-drug-substances-use-compounding-may-present-significant-safety-risks"},
{"title": "USADA: BPC-157, A Prohibited Peptide", "url": "https://www.usada.org/..."},
{"title": "WADA: 2022 Prohibited List Now in Force", "url": "https://www.wada-ama.org/..."}
]
}
{
"success": true,
"query": "epitalon",
"slug": "epitalon",
"name": "Epitalon",
"research_brief_url": "https://peptideportal.org/peptides/epitalon",
"vendor_pricing": {
"marketplace_url": "https://peptideportal.org/marketplace?q=Epitalon",
"price_per_mg_range_usd": null,
"vendor_count": 0,
"coa_status": null,
"per_vendor_pricing_visible": false,
"per_vendor_pricing_gate": "no_vendor_coverage"
},
"dosing_protocol": "no_human_protocol_published",
"clinical_papers": {
"research_index_url": "https://peptideportal.org/research/epitalon",
"total_papers": 0,
"papers": []
}
}
{
"success": false,
"reason": "peptide_not_found",
"query": "made-up-peptide-xyz",
"tried": [
"https://peptideportal.org/peptides/made-up-peptide-xyz (404)",
"global Cmd+K typeahead (0 Peptides group results)"
],
"suggestion": "Try a canonical alias, CAS number, or mechanism keyword (e.g., 'GLP-1', 'GH secretagogue', 'tissue repair'). The full catalog of ~58 slugs is at https://peptideportal.org/sitemap.xml."
}
