Coastal Peptides Review 2026: GLP Combination Blends and Member Pricing Tiers

Coastal Peptides Review 2026: GLP Combination Blends, Member Pricing Tiers, and Research Compound Coverage

> Research Use Only Disclaimer: All products discussed in this article are sold strictly for laboratory research and scientific purposes. They are not approved for human consumption, clinical use, or veterinary application. Always consult applicable regulations before handling research compounds.

Coastal Peptides, operating at coastalpeptides.com, is a research compound supplier with 33 active listings tracked on Peptides.SO. Its catalog is built around pre-formulated GLP-axis combination blends — CagriSema, a GLP-4 blend, and a GLP-3/Cagrilintide combination among them — a pattern that sets it apart from suppliers who carry only single-compound GLP listings.

What Peptides.SO Could Verify

Coastal Peptides carries 33 active listings across nine catalog categories, all currently marked in stock. Healing/recovery compounds lead with 12 listings ($50–$210, averaging ~$100), and GLP receptor agonist compounds follow closely with 9 listings ($60–$210, averaging ~$114) — together accounting for roughly two-thirds of the catalog. The supplier holds no verified badge on Peptides.SO and has no accumulated platform rating data.

Full Catalog Pricing (August 2026 Live Data)

Pricing drawn directly from Peptides.SO live listings database. All vial format unless noted.

GLP Receptor Compounds

Healing & Recovery

Additional Compounds

Pricing covers 33 active listings as of August 2026.

GLP Combination Blends: Coastal's Defining Catalog Pillar

The GLP receptor segment is Coastal Peptides' clearest differentiator, and its distinguishing feature is a preference for combination formulations over single-compound listings. Few suppliers tracked on Peptides.SO carry the full combination range that Coastal lists.

GLP-4 Blend (Semaglutide/Cagrilintide, 5mg/5mg, $60–$210 across four size tiers): Combines dual GLP-1R agonism (semaglutide) with amylin-receptor agonism (cagrilintide). This combination is the research analog of the Phase 3 CagriSema combination program being investigated clinically for weight management. Researchers studying combined GLP-1R/amylin receptor mechanisms will find this the most accessible pre-formulated version of the combination available through the platform.

CagriSema 10mg/10mg ($130): A higher-dose configuration of the same Cagrilintide/Semaglutide combination. The doubling of compound quantity per vial compared to the entry GLP-4 listing serves research protocols requiring higher concentrations, extended duration, or multiple experimental arms from a single preparation.

GLP3/Cagrilintide 20mg/4mg ($130): Combines Retatrutide (the triple GLP-1R/GIPR/GCGR agonist) with Cagrilintide. This four-receptor combination — GLP-1R, GIP-R, GCGR, and amylin receptor — represents one of the most mechanistically complex metabolic-research compounds available in any catalog at this price point. Researchers modeling the interaction between incretin signaling and amylin-receptor co-activation in metabolic tissue have few alternatives at this format specificity.

GLP3 (R) — Retatrutide 10mg ($100): The standalone triple-receptor agonist, for researchers who prefer single-agent design. Retatrutide is one of the most demand-active compounds tracked on Peptides.SO and is covered in detail in the Retatrutide research profile.

GLP1 (S) — Semaglutide ($60–$100, 5mg/10mg): Standalone semaglutide. Pricing runs $12.00/mg (5mg) and $10.00/mg (10mg), with a 17% volume discount at the 10mg tier. The semaglutide research overview provides deeper mechanistic context.

GLP-2 (T) — Tirzepatide ($60–$210, 5mg–30mg): Tirzepatide pricing across four quantity tiers creates a genuine bulk discount structure: $12.00/mg (5mg), $10.00/mg (10mg), $7.00/mg (20mg), and $7.00/mg (30mg). The 30mg tier is the most cost-efficient entry point for labs running extended protocols. See the Tirzepatide research profile for mechanistic background.

Healing and Recovery Coverage

The healing segment follows the same blend-forward philosophy as the GLP catalog. Coastal's multi-compound tissue-repair combinations are notable:

GHK-Cu, BPC-157 + TB-500 Triple Blend: Two size tiers ($50 and $80) covering the three most-studied tissue-repair and anti-inflammatory peptides in combined format. Researchers studying multi-pathway tissue healing models — where GHK-Cu contributes collagen modulation, BPC-157 adds angiogenic and gastrointestinal healing signals, and TB-500 contributes actin sequestration and satellite cell activation — benefit from a pre-formulated option that removes the weighing and combinatorial reconstitution step.

BPC-157 + TB-500 Combination ($80): The two-compound healing combination for researchers focused specifically on the BPC-157/TB-500 axis, which is the most-studied tissue-repair pairing in the research literature.

KLOW Blend 80mg ($130–$140): The KLOW blend format covers a multi-compound protocol in a single vial. Two price tiers reflect different quantity or formulation configurations.

PCL GLOW Blend ($130): A cosmetic-focused peptide blend covering the GHK-Cu/cosmetic peptide niche. Listed in a format relevant to skin-science and dermatology research applications.

Member Pricing Tiers and Registration Structure

Coastal Peptides operates a registration-gated storefront: the site requires researchers to confirm they are 21 years of age or older and states that access is "limited to registered parties who have confirmed our research-use terms." Registered members reportedly get access to "member pricing and bulk quantity tiers" beyond the base catalog pricing shown above.

This means the public-facing pricing in the table above is the list rate, not the member rate. Researchers who register and qualify may access pricing below what's visible from the outside. For the full member pricing, registration and compliance attestation with the supplier's own terms is required. The existence of a multi-tier pricing model is structurally unusual in this market; most suppliers in this batch publish a single price point (possibly with a public discount code), not a gated member structure.

The site also advertises free shipping on orders over $250 — relevant context for researchers modeling order minimums given the per-vial pricing structure above.

Growth Hormone Axis Coverage

Beyond GLP compounds, Coastal carries the core GHRH-axis research catalog. CJC-1295 without DAC ($80 for 5mg, $16.00/mg) and Ipamorelin-based blends ($60–$90) cover the secretagogue pairing that is the basis of GHRH-axis research. The CJC + Ipamorelin Blend ($90) and IPAMORELIN/CJC-1295 Blend ($60) are two separate SKUs for the same compound combination at different price points, suggesting different quantity tiers. Tesamorelin/Ipamorelin ($60) extends the axis to the tesamorelin-adjacent research niche. AOD-9604 ($45) covers the growth hormone fragment for adipose metabolism research.

Testing and Quality Documentation

The site states "batch-specific certificates of analysis on every order" and maintains a dedicated certificates-of-analysis page, though specific testing methodology (HPLC, mass spectrometry) is not detailed on the pages Peptides.SO reviewed. For researchers evaluating any documentation received with an order, the COA interpretation guide explains the key markers that distinguish useful certificates from informational-only documents.

Frequently Asked Questions

Q: What is the difference between GLP-4 (Sema/Cagri blend) and CagriSema as listed by Coastal Peptides?

A: Both products combine Semaglutide (GLP-1R agonist) and Cagrilintide (amylin/AMY1R agonist). The GLP-4 listing is structured at 5mg/5mg per compound per dose unit and is available in four size tiers (5mg/5mg up to 30mg/30mg), while CagriSema is a fixed-format 10mg/10mg configuration. The key research distinction is fixed-ratio versus scaled-volume design. Researchers who need a lower dose or more gradual titration may prefer the GLP-4 entry tier; those running higher-dose or longer protocols may find CagriSema's 10mg/10mg format more efficient per order.

Q: How does Coastal Peptides' GLP pricing compare to other Peptides.SO-tracked suppliers?

A: At $10.00–$12.00/mg for Semaglutide (10mg and 5mg tiers), Coastal sits in the mid-market range. Across tracked suppliers, Semaglutide runs $8.50–$16.00/mg depending on supplier and quantity tier. Tirzepatide at $7.00/mg (20–30mg) is competitive with the field. Retatrutide at $10.00/mg (10mg) is similarly in line with the mid-range. The member-tier pricing, if materially below list rates, would shift Coastal's competitive position; without registration it is not possible to verify member rates externally. The GLP-1 research sources guide has current cross-supplier pricing context.

Q: Does Coastal Peptides carry standalone Cagrilintide?

A: As of August 2026 platform data, Coastal lists Cagrilintide in combination formats only (the GLP-4 and CagriSema blends), not as a standalone compound. Researchers who need standalone Cagrilintide for independent dosing protocols should cross-reference the supplier comparison page for alternatives.

Q: What is the Klow Blend, and which compounds does it contain?

A: The KLOW Blend is a multi-compound healing-peptide combination format. Based on catalog context across multiple Peptides.SO-tracked suppliers, KLOW typically contains BPC-157, TB-500, and KPV in a pre-formulated ratio. Coastal lists two KLOW tiers at $130 and $140 (80mg), with the pricing spread likely reflecting quantity or concentration differences between the two SKUs. Researchers should confirm exact compound ratios directly with Coastal before designing a protocol around this product.

Q: Is Coastal Peptides' registration requirement standard in the research peptide market?

A: The 21+ age confirmation is common practice across the research peptide market and is generally required by supplier policies and standard FD&C Act disclaimer language. The member pricing gate — where full pricing is only visible post-registration — is less common; most suppliers in this batch publish full pricing publicly. The implication is that some researchers may need to complete registration before fully evaluating Coastal's value proposition. The research peptide regulatory landscape guide covers the broader compliance context under which these suppliers operate.

Q: How should researchers evaluate a supplier without a verified badge or rating history on Peptides.SO?

A: A verified badge on Peptides.SO indicates the supplier has submitted documentation confirming identity, COA availability, and compliance with platform standards. In the absence of a badge, researchers should: (1) request batch-specific COAs before or with the first order; (2) verify the testing methodology named on any COA (HPLC and/or mass spectrometry are the meaningful standards — see peptide purity testing); (3) start with a lower-cost or lower-quantity order and evaluate documentation quality before scaling. The COA interpretation guide provides a step-by-step framework.

Pricing Position

Coastal Peptides' standalone-compound pricing — $4.50–$5.00/mg on BPC-157, MT-2, and PT-141; $6.00–$10.00/mg across the GLP-axis compounds — sits at mid-market for this review batch. The real value proposition for a price-sensitive researcher is less about the base per-mg rate and more about the combination-blend catalog and the member-tier pricing structure, which isn't reflected in list price alone. Current listings are on the supplier profile; researchers assembling a multi-compound GLP protocol may find the research peptide stack builder useful for comparing a blend purchase against separately sourced components.

Pros and Cons

Verdict

Coastal Peptides is the clearest combination-blend specialist among the suppliers in this batch — CagriSema, the GLP-4 blend, and the GLP-3/Cagrilintide combination aren't commodity listings you'll find at every vendor, and the healing-blend catalog carries the same pre-formulated philosophy through to tissue-repair research. The GLP-4 blend's four-tier quantity structure is particularly useful for labs scaling from initial compound validation to multi-arm protocols without switching suppliers.

Standalone compound pricing is solidly mid-market rather than a standout, and the registration gate and stated member-tier pricing mean the full picture isn't visible from list price alone. For researchers specifically interested in pre-formulated GLP or healing combinations rather than assembling their own from separate vials, this is one of the more purpose-built catalogs reviewed in this batch. Labs focused primarily on standalone GLP research where price-per-mg is the primary filter will find more competitive options among other Peptides.SO-tracked suppliers.

Compare Coastal against the full Peptides.SO supplier field on the supplier comparison page.

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All products are for laboratory research purposes only. Not for human consumption. This article is for educational and research information purposes only.