Vendors

Janera Science vs Peptides Source

Across the 6 products both vendors stock, Janera Science has the lower effective price per mg on 3 and Peptides Source on 3. Janera Science lists 7 tracked listings across 6 products; Peptides Source lists 98 across 45. On certificates of analysis both show none found COA coverage of the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index. These are price and document observations, not quality ratings, and neither vendor is endorsed.

Janera Science

Janera Science is a research-peptide vendor that lists 7 injectable peptides, including GHK-Cu, Selank and Semax.

Price vs market median
11% below market
Tracked catalog
6 products · $
Cheaper on
3 of 6 shared
COA coverage
None found
Visit Janera Science
Peptides Source

Peptides Source is a research-peptide vendor that lists 97 injectable peptides, including NAD+, Epitalon and CJC-1295 (no DAC).

Price vs market median
3% below market
Tracked catalog
45 products · $$
Cheaper on
3 of 6 shared
COA coverage
None found
Visit Peptides Source

Vendor facts

Detail
Janera Science
Peptides Source
Sells
7 vials
97 vials
Tracked listings
7 across 6 products
98 across 45 products

Dashes mark facts we have not recorded yet. Vendor-stated details come from each storefront and can change without notice.

Certificates on file

Detail
Janera Science
Peptides Source
COA coverage
None found
None found
Certificates
0 current
0 current
Labs
—
—
Newest test date
—
—

Coverage rates how many of the in-stock products we track have a certificate our pipeline read and matched to a catalog peptide. Based on the certificates our crawler found; vendors may publish more than we index. We do not test products, and a certificate cannot show authenticity, chain of custody or sterility.

Price per mg on shared products

6 products both stock
Product
Janera Science
Peptides Source
BPC-157
$5
$4.25
GHK-Cu
$0.70
$0.80
Selank
$4
$5
Semax
$4
$5
TB-500
$9
$7

The lower price of each pair is highlighted. Prices are the cheapest in-stock listing we track for that product, per mg after any public discount code, and they move daily.

Carried by one vendor only

Only at Peptides Source

39 products the other vendor does not list

31 more on the Peptides Source page

Prices shown are per mg for the cheapest in-stock listing we track.

Questions

Is Janera Science cheaper than Peptides Source?
On the 6 products both vendors stock, Janera Science has the lower effective price per mg on 3 and Peptides Source on 3. Each side uses the cheapest in-stock listing we track for that product, after any public discount code, and prices change often.
How much COA coverage does each vendor have?
Janera Science: none found. Peptides Source: none found. Based on the certificates our crawler found; vendors may publish more than we index. We do not test products ourselves, and a certificate cannot prove authenticity or sterility.
What does each vendor carry?
Janera Science has 6 priced products in the current index and Peptides Source has 45, 6 of which appear on both catalogs. 0 products are listed only by Janera Science and 39 only by Peptides Source.

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Market tape