Costides reviews
Costides at a glance
- PepFinder Score
- 7.2/10
- Based in
- United States
- Products tracked
- 37 across 24 peptides
- Price level
- 60% below the US market median
- Testing evidence
- Stated by the store, no certificates on file
- Verified store
- ✓ Verified owner
- Last checked
- 8 Nov 2026
PepFinder currently tracks 37 products from Costides across 24 peptides. Its listed prices per mg are 60% below the US market median, across 27 listings we could compare. The cheapest listing we track is US$140. PepFinder last read its listings on 8 Nov 2026.
PepFinder rating
Out of 10
Customer rating
No customer reviews yet
Best for: Low prices and large product selection
- Large range with 37 listed products
- Verified owner: the store proved to PepFinder that it controls its website
- Refund policy not yet confirmed
How its prices compare · 27 listings checked against the market
We may earn a commission. How this works
Costides review: what we found
Last checked 8 Nov 2026 · All sources
What PepFinder checked
Observed by our checks or taken from public records
- We read 37 listings across 24 peptides from its website.Details · 8 Nov 2026
- Its comparable prices are 60% below the market median per mg (27 listings compared in the same currency).Details · 8 Nov 2026
- Verified owner: the store's owner claimed this profile and proved to PepFinder that they control costides.us.Details · 27 Sept 2026
What the store says
The store's own statements, not checked by PepFinder
- The supplier states its products are independently tested: “…Are Tirzepatide products third-party tested, and how is purity handled?…”States independent testing ↗ · 24 Sept 2026
- The supplier's website links to certificates of analysis or lab results. Documents are not reviewed until an editor checks them.Links a COA / lab results page ↗ · 24 Sept 2026
- The website links to its returns policy page.Linked policy page ↗ · 24 Sept 2026
- The website links to its terms page.Linked policy page ↗ · 24 Sept 2026
Not yet known
Gaps in the record, not faults
- Whether its testing claims hold up: we have not yet seen and reviewed one of its certificates.
- Not yet found on its website: customer support channels, domain age, testing laboratory, public batch numbers.Details
- What ordering is like: no PepFinder customer has reviewed it or reported an order yet.
PepFinder has not bought from or tested this store's products. Request a correction with evidence.
No customer reviews of Costides yet
Ordered from Costides? A review or a short report of dispatch, delivery, payment or support helps the next buyer. Reviews are moderated; the store can reply but not remove them.
Rating by category
How we rate- Product selection
- 7.9 / 10
- Value
- 9.0 / 10
- Reliability
- 7.5 / 10
- Delivery
- 7.0 / 10
- Customer service
- 5.0 / 10
- Payment options
- 8.5 / 10
- Review sentiment
- Not enough data
- Testing and traceability
- 4.6 / 10
- Information availability
- Limited
Why does PepFinder say this?
We can show a source for 11 of the 15 facts that matter about a store (who runs it, contact details, shipping, payments, testing, prices). Not yet confirmed: customer support channels, domain age, testing laboratory, public batch numbers. “Not confirmed” means we have not found it, not that the answer is no. See sources.
Popular products
Checked 8 Nov 2026| Product | Supplier price |
|---|---|
| US$385.00 US$1.28/mg 81% below average | |
| US$285.00 US$0.95/mg 76% below average | |
| US$215.00 US$0.22/mg 69% below average | |
| US$180.00 US$1.80/mg 69% below average | |
| US$325.00 US$3.25/mg 59% below average | |
| US$190.00 US$1.90/mg 58% below average |
We may earn a commission. How this works
Prices as listed by the supplier when we last checked; the supplier confirms the final price. “vs market” compares price per mg with the median across tracked suppliers listing the same peptide in the same currency and serving this store's region, never converted.
How its prices compare
Costides lists in USD. We compared 27 of its 37 listings with the median price per mg across the other stores that list the same peptide in USD and serve the US (86 to 185 stores per product). Prices are never converted between currencies, so this is a like-for-like comparison for a buyer in the US.
Taken together, its typical listing sits 60% below that market median. Behind that: 27 products priced below most stores, 0 within 5% of the median, and 0 products priced above most stores.
Priced below most stores (27)
| Product | Price | vs market median |
|---|---|---|
| Retatrutide 30 mg · 10-pack | US$385.00 | 81% below |
| Tirzepatide 40 mg · 10-pack | US$315.00 | 80% below |
| Retatrutide 20 mg · 10-pack | US$300.00 | 78% below |
| Thymosin Alpha-1 10 mg · 10-pack | US$180.00 | 77% below |
| Tirzepatide 30 mg · 10-pack | US$285.00 | 76% below |
| MOTS-c 40 mg · 10-pack | US$475.00 | 72% below |
And 21 more in the full catalogue below.
Price per mg lets vials of different sizes be compared. A higher price can reflect a smaller vial, included shipping, or testing the store pays for; the per-peptide price pages show every store side by side. Prices are as the store listed them when we last checked.
Pros and things to consider
Pros
- Large range with 37 listed products
- Verified owner: the store proved to PepFinder that it controls its website
- Accepts card payments, which carry chargeback protection
Things to consider
- Refund policy not yet confirmed
From PepFinder's own checks of the supplier's website and public records. “Not confirmed” means we have not found it yet. Request a correction.
About Costides
Who they are and what they sell
Costides is based in the United States. It lists 37 products across 24 peptides. It states it ships to the United States. It accepts Card, Cryptocurrency and Venmo. Its PepFinder Score is 7.2 out of 10. It has no customer reviews on PepFinder yet. PepFinder last read its website on 8 Nov 2026.
Costides is a research-peptide store based in United States. We track 37 of its listings across 24 peptides, including Retatrutide, Tirzepatide, GHK-Cu, Ipamorelin, MOTS-c and Wolverine blend. It has no customer reviews on PepFinder yet.
To see whether Costides is good value, compare its prices per mg with other stores on Retatrutide prices in the US, Tirzepatide prices in the US and GHK-Cu prices in the US. The “Is Costides legit?” checks below cover contact details, payment, delivery and testing. Before a first order, read how to read a peptide COA and compare other suppliers in the US.
In their own words: Costides is a US research peptide supplier based in Baltimore, MD. We sell research-use-only peptides such as retatrutide and tirzepatide in 10-vial packs, with wholesale pricing for labs. US-only shipping in 2-5 business days; checkout takes card, Venmo and crypto. For laboratory research use only, not for human consumption.
Store and verification
Verified supplier · 8 legitimacy checks
Store information
- Trading name
- Costides
- Location
- United States
- First tracked by us
- 24 Sept 2026
- Estimated time active
- Not known
- orders@costides.us
- Phone
- (240) 649-9171
Is Costides legit? What we can check
No website can promise that a supplier is trustworthy. These are the checks we can make from public records, the supplier’s own website and our reviews. They are the same checks as in our guide to spotting an unreliable supplier.
Website history (Not known)
Domain age not yet recorded.
Ways to get in touch (Not known)
Contact channels not yet recorded.
Written policies (In place)
terms published.
Independent testing (Not known)
Costides states that its products are independently tested, links a certificates-of-analysis or lab-results page. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
PepFinder verification (Not known)
Not verified. Most suppliers are not; verification is voluntary.
Regulator notices and warnings (In place)
None found in our records.
Card payments (In place)
Card payment shown on the website, which usually allows a chargeback if an order goes wrong.
Customer reviews (Not known)
No reviews on PepFinder yet.
Shipping and payments
Delivery: 2-5 business days in the US · 3 payment methods
Shipping, payment and policies
How Costides works with customers
- Currencies
- USD Supplier submitted
Replies and complaints
- No reviews to reply to yet since claiming this profile.
- No complaints raised through PepFinder in the last year.
Only a customer can confirm a complaint is resolved. Complaint details are private.
Store details last updated 19 Oct 2026.
Testing and certificates of analysis
Costides states that its products are independently tested, links a certificates-of-analysis or lab-results page. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
Testing transparency
- Certificates of analysis
- Testing claimed, not reviewedSupplier claims
Costides states that its products are independently tested, links a certificates-of-analysis or lab-results page. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
- Batch-specific COAs
- Not yet assessed
- States third-party testing
- ✓ Yes
- Laboratories named by the supplier
- None found
- Lab accreditation identifiable
- Not yet assessed
- Batch numbers public
- Not yet assessed
- Manufacturing/source location disclosed
- Not yet assessed
- Testing documents we hold
- None yet
We record what testing documents state and where they came from. We do not test products, and a certificate is not evidence that a product is safe for any use.
Full catalogue (39 products)
Every listing we track, with search, price per mg and price history
Listed catalogue and prices
39 products · last checked 8 Nov 2026| Product (as listed) | Price | Per mg | Stock |
|---|---|---|---|
| US$220.00 5 mg · 10-pack | US$4.40 | ||
| US$180.00 10 mg · 10-pack | US$1.80 | ||
| US$250.00 CJC-1295 no DAC 5 mg + Ipamorelin 5 mg · 10-pack | — | ||
| US$185.00 10 mg · 10-pack | US$1.85 | ||
| US$140.00 50 mg · 10-pack | US$0.28 | ||
| US$215.00 100 mg · 10-pack | US$0.22 | ||
| US$150.00 G25 · 10-pack | — | ||
| US$360.00 BPC 10 mg + TB-500 10 mg + GHK-Cu 50 mg · 10-pack | — | ||
| US$160.00 5 mg · 10-pack | US$3.20 | ||
| US$250.00 10 mg · 10-pack | US$2.50 | ||
| US$450.00 BPC 10 mg + TB-500 10 mg + KPV 10 mg + GHK-Cu 50 mg · 10-pac | — | ||
| US$185.00 10 mg · 10-pack | US$1.85 | ||
| US$200.00 10 mg · 10-pack | US$2.00 | ||
| US$475.00 40 mg · 10-pack | US$1.19 | ||
| US$230.00 10 mg · 10-pack | US$2.30 | ||
| US$279.99 NAD · 10-pack | — | ||
| US$250.00 10 mg · 10-pack | US$2.50 | ||
| US$165.00 5 mg · 10-pack | US$3.30 | ||
| US$200.00 10 mg · 10-pack | US$2.00 | ||
| US$300.00 20 mg · 10-pack | US$1.50 | ||
| US$385.00 30 mg · 10-pack | US$1.28 | ||
| US$425.00 40 mg · 10-pack | — | ||
| US$475.00 50 mg · 10-pack | — | ||
| Not stated 10-vial pack Store's price · 19 Oct 2026 | — | ||
| US$260.00 10 mg · 10-pack | US$2.60 | ||
| US$190.00 10 mg · 10-pack | US$1.90 | ||
| US$200.00 10 mg · 10-pack | US$2.00 | ||
| US$300.00 10 mg · 10-pack | US$3.00 | ||
| US$190.00 5 mg · 10-pack | US$3.80 | ||
| US$325.00 10 mg · 10-pack | US$3.25 | ||
| US$180.00 10 mg · 10-pack | US$1.80 | ||
| US$190.00 10 mg · 10-pack | US$1.90 | ||
| US$250.00 20 mg · 10-pack | US$1.25 | ||
| US$285.00 30 mg · 10-pack | US$0.95 | ||
| US$315.00 40 mg · 10-pack | US$0.79 | ||
| US$360.00 60 mg · 10-pack | — | ||
| Not stated 10-vial pack Store's price · 19 Oct 2026 | — | ||
| US$265.00 BPC 5 mg + TB-500 5 mg · 10-pack | — | ||
| US$335.00 BPC 10 mg + TB-500 10 mg · 10-pack | — |
2 of these prices and stock levels were provided by the supplier and have not yet been checked on their website by PepFinder, so they are not used in price comparisons or scores. Last updated 19 Oct 2026.
The supplier confirms the final price and availability when you order. Product names, photos, quantities and prices are as publicly listed by the supplier; photos load from the supplier’s own website. “vs market” compares price per mg with the median across tracked suppliers listing the same peptide in the same currency; prices are never converted between currencies. We do not sell these products and give no guidance on their use.
Sources and evidence
Where each fact came from · information availability: limited
Evidence Coverage: 51%
What we know about this supplier, and whether we can show you where it came from. “Not known” means we have not found it, not that the answer is no.
| Fact | Status | Last observed |
|---|---|---|
| Business location | Known, no source shown | — |
| Contact details | Known, no source shown | — |
| Shipping destinations | Known, no source shown | — |
| Stated delivery time | Known, no source shown | — |
| Payment methods | Known, sourced | 45 days ago |
| Customer support channels | Not known | — |
| Refund or returns policy | Known, sourced | 45 days ago |
| Terms of sale | Known, sourced | 45 days ago |
| Domain age | Not known | — |
| Certificates of analysis | Known, sourced | 45 days ago |
| Independent testing | Known, sourced | 45 days ago |
| Testing laboratory | Not known | — |
| Public batch numbers | Not known | — |
| Product catalogue | Known, sourced | 9 hours ago |
| Prices | Known, sourced27 of 37 listed prices can be compared per mg | 9 hours ago |
Evidence and sources
| Topic | Claim | Basis | Source type | Captured | Last checked | Source |
|---|---|---|---|---|---|---|
| Certificates of analysis | The supplier's website links to certificates of analysis or lab results. Documents are not reviewed until an editor checks them. | Supplier-stated | Supplier website | 24 Sept 2026 | 45 days ago | Links a COA / lab results page |
| Testing claim | The supplier states its products are independently tested: “…Are Tirzepatide products third-party tested, and how is purity handled?…” | Supplier-stated | Supplier website | 24 Sept 2026 | 45 days ago | States independent testing |
| Refund policy | The website links to its returns policy page. | Supplier-stated | Supplier website | 24 Sept 2026 | 45 days ago | Linked policy page |
| Terms | The website links to its terms page. | Supplier-stated | Supplier website | 24 Sept 2026 | 45 days ago | Linked policy page |
| Pricing | 37 peptide listings read from the supplier's own catalogue. Prices and stock are as the site listed them at capture. | Supplier-stated | Supplier website | 24 Sept 2026 | 9 hours ago | Supplier's public product catalogue |
| Other | The website links to its privacy page. | Supplier-stated | Supplier website | 24 Sept 2026 | 45 days ago | Linked policy page |
Verified fact: checked by us against an independent source. Supplier-stated: what the supplier says, not independently confirmed. User report: submitted by a user. Editorial assessment: our judgement. Spotted an error? Request a correction.
Supplier history
- 5 Nov 2026PriceGHK-Cu 100 mg · 10-pack (100 mg · 10-pack): price down 7%
- 5 Nov 2026PriceTirzepatide 30 mg · 10-pack (30 mg · 10-pack): price up 4%
- 5 Nov 2026PriceTirzepatide 20 mg · 10-pack (20 mg · 10-pack): price up 4%
- 5 Nov 2026PriceTirzepatide 10 mg · 10-pack (10 mg · 10-pack): price up 3%
- 5 Nov 2026PriceGHK-Cu 50 mg · 10-pack (50 mg · 10-pack): price down 3%
- 5 Nov 2026CatalogueNew listing: PT-141 (10 mg · 10-pack)
- 5 Nov 2026CatalogueNew listing: SS-31 (10 mg · 10-pack)
- 5 Nov 2026PriceTirzepatide 40 mg · 10-pack (40 mg · 10-pack): price up 5%
- 3 Nov 2026CatalogueNew listing: Melanotan II (10 mg · 10-pack)
- 28 Oct 2026PriceSemax (10 mg · 10-pack): price up 11%
- 28 Oct 2026PriceSelank (10 mg · 10-pack): price up 9%
- 21 Oct 2026ScoreTransparency Score changed from 5.8 to 6.5Listings under the store's old product names, no longer on its pages, retired
- 19 Oct 2026CatalogueNew listing: Tirzepatide (10-vial pack)
- 19 Oct 2026CatalogueNew listing: Retatrutide (10-vial pack)
- 17 Oct 2026CatalogueNew listing: KPV (10 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Tirzepatide 20 mg · 10-pack (20 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Tirzepatide 30 mg · 10-pack (30 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Epithalon (10 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Selank (10 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Tirzepatide 40 mg · 10-pack (40 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Semax (10 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: CJC-1295 (no DAC) + Ipamorelin (CJC-1295 no DAC 5 mg + Ipamorelin 5 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Sermorelin Acetate (10 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: BPC-157 (10 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Wolverine BPC 10 mg + TB-500 10 mg · 10-pack (BPC 10 mg + TB-500 10 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: TB-500 (5 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: GLOW (BPC 10 mg + TB-500 10 mg + GHK-Cu 50 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Ipamorelin 10 mg · 10-pack (10 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Ipamorelin 5 mg · 10-pack (5 mg · 10-pack)
- 17 Oct 2026CatalogueNew listing: Tirzepatide 60 mg · 10-pack (60 mg · 10-pack)
How PepFinder rates suppliers
What the rating and the customer rating each measure
The PepFinder rating (out of 10) is our own assessment of a supplier across reliability, product selection, pricing, delivery, customer service, website, payment options, packaging and how much information the supplier makes available. Each part is scored from what we can observe on its website, from public records and from customer reviews; parts we cannot observe are left unscored rather than marked down, and the rating is only shown once enough of them are known. It can move as more of the inputs become available.
The customer rating (out of 5 stars) is simply the average of approved customer reviews, shown from three reviews. Reviews are moderated before publication and suppliers can reply but not remove them.
The price comparison puts each listing's price per milligram against the median across every tracked supplier listing the same peptide in the same currency and serving the same region, so a UK store is measured against stores a UK buyer could order from. Prices are never converted between currencies. Suppliers cannot pay to change any of this; claiming or verifying a profile does not change the rating either.
Transparency Score
Out of 10 · methodology v1 · updated 21 Oct 2026 · 50% of criteria assessed
Testing, documentation and business transparency. Separate from the PepFinder Score. Paid plans and sponsorship cannot change it. How it is calculated
Show every factor
Testing transparency — 4.6
- ◐ Links a certificates-of-analysis page (not yet reviewed by us)12.5/25
- ? COAs are batch-specificnot assessed
- ✓ States third-party (independent) testing20/20
- ✕ Names the testing laboratories0/10
- ? Laboratory accreditation is identifiablenot assessed
- ✕ COAs reviewed by us in the last 12 months0/15
Contact transparency — 10.0
- ✓ Contact details are public15/15
- ? Manufacturing/source location disclosednot assessed
Documentation — 2.8
- ◐ Sourced evidence on record24/40
- ✕ Share of evidence independently verified0/30
- ? Batch numbers are publicnot assessed
- ✕ A testing document checked in the last 6 months0/15
User reviews
No approved reviews yet.
Customer service
Not yet assessed by the editorial team.
Shipping transparency — 10.0
- ? Shipping policy is clearnot assessed
- ✓ Delivery estimate stated30/30
- ✓ Shipping destinations listed30/30
Longevity
No domain record or founding date researched yet.
Policy transparency — 10.0
- ? Refund policy is clearnot assessed
- ? Terms of sale are clearnot assessed
- ✓ Refund or returns policy published20/20
- ✓ Terms of sale published20/20
- ✓ Privacy policy published20/20
Compare Costides with other suppliers
| Supplier | Rating | Customer rating | Prices | Products | |
|---|---|---|---|---|---|
 PSPeptides™ | 7.5 | No reviews yet | 4% below | 98 | Visit store |
 Puritide Research | 7.8 | No reviews yet | 6% above | 54 | Visit store |
 Bulk Peptide Wholesale | 6.8 | No reviews yet | 66% below | 82 | Visit store |
We may earn a commission. How this works
Costides vs PSPeptides™Costides vs Puritide ResearchCostides vs Bulk Peptide WholesaleAll alternatives to Costides
Costides: common questions
Is Costides legit?
We cannot vouch for any supplier, but we can report what the record shows. Costides meets 3 of the 8 checks we make, with nothing flagged. Each check, and its source, is listed on this page.
Where is Costides based?
Our records place Costides in United States.
Which countries does Costides ship to?
Costides states that it ships to United States. Check the supplier's own shipping policy before ordering.
Does Costides publish certificates of analysis?
Costides states that its products are independently tested, links a certificates-of-analysis or lab-results page. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
What payment methods does Costides accept?
The website shows: Card, Cryptocurrency, Venmo.
How long does Costides take to deliver?
Costides states: "2-5 business days in the US".
Ready to shop at Costides?
- Large range with 37 listed products
- Verified owner: the store proved to PepFinder that it controls its website
We may earn a commission. How this works
Run Costides? Add a free PepFinder badge to your website.
Problem with an order? Raise it privately with Costides; either side can bring in PepFinder.
Something wrong on this page? Request a correction with evidence.
This page provides supplier and market information only and is not medical advice. Disclaimer