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Supplier directory

Research Peptide Suppliers Directory

Compare 85 research peptide suppliers by price per mg, COA links, shipping, payment options and coupon codes in one directory.

Suppliers listed
85
Products listed
3171
COAs published
2213
Active coupons
75

Popular suppliers

All suppliers

85 suppliers

Showing 1–21 of 85

Supplier guide

How to Choose a Peptide Supplier

Before ordering from a research peptide supplier, compare cost per milligram, not the headline price, since pack sizes vary. Then check for a certificate of analysis for your exact batch, the shipping origin and delivery window, payment methods, recent public reviews and any active coupon code. Every profile in this peptide suppliers directory shows these side by side.

PepLookup tracks 85 suppliers this way: prices normalized to cost per mg and updated as listings change. Being listed is not an endorsement. Some Visit Site links are affiliate links, which doesn’t change prices or the order of the list.

Questions

Frequently asked questions.

How many peptide suppliers does PepLookup list?
PepLookup currently lists 85 research peptide suppliers, and the directory is updated as listings change. Each supplier has its own profile with prices per mg, COA links, shipping details and payment methods.
Are there US-based peptide suppliers?
Yes. Many suppliers in the directory state that they operate from the United States. Open a supplier's profile to see where it ships from, its stated delivery times and its payment methods.
How do I know if a peptide supplier is reputable?
PepLookup doesn't vouch for any supplier, but you can check the signals yourself: a published certificate of analysis that matches the exact batch, a clear cost per milligram, stated shipping terms, and recent public reviews, including the negative ones. Verify each point on the supplier's own site before ordering.
Who is the best peptide supplier?
There is no single best peptide supplier, and PepLookup doesn't rank them by endorsement. The right choice depends on the compound, the price per mg, whether a COA matches your batch, shipping speed and payment options. Use the directory to compare these side by side, then confirm terms on the supplier's own site.
Are there peptide suppliers with coupon codes?
Yes. Some suppliers offer active discount codes, which are shown on their cards and on the PepLookup coupons page. Codes are set by the supplier and can change or expire, so confirm them at checkout.

The directory

All suppliers.

85 listed

Show all 85 suppliers

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