What is peptide payment processing?

Card processing for stores that sell research peptides, from a processor that accepts the category before the first payment. The processor reviews your store and documents, sets your terms, and then takes Visa, Mastercard, Discover and Amex payments for you. Amino Engine is the merchant processor for peptide brands.

Do I need processing history?

Not at Amino Engine. Everyone can apply, including brand new stores. Some other processors ask for history, a volume minimum or a reserve instead. Peptide Payments, for example, says: “Below the volume minimum, a merchant account is still approvable if you can fund a cash reserve.”

What does the review look at, and can I apply if I was declined or closed?

We review your store and documents once, before the first payment. If something needs fixing, we say exactly what. What blocks an approval is missing documents, or a store that will not meet our site rules: research-use-only notices and clear shipping and refund policies. Never your history. Stores declined, shut down or frozen elsewhere are welcome to apply.

Do I need a certification to accept cards for peptides?

It depends on the processor. On its own page, Corepay says it cannot assist peptide platforms without the third-party certification it names. AllayPay says it does not require one for a domestic research peptide account. Read each provider’s page before you apply. For Amino Engine, ask us about LegitScript at support@aminoengine.com.

Does Stripe allow peptides?

Its FAQ says: “Yes, Stripe supports the sale of many different peptides, with some limitations.” Research peptides may be sold where there are preventive measures in place that Stripe accepts, and Stripe decides whether a store meets them. A closure means its review decided a store did not.

Does PayPal allow peptides, and how long can it hold funds?

PayPal’s Acceptable Use Policy bars activities that “relate to transactions involving (a) narcotics, steroids, certain controlled substances or other products that present a risk to consumer safety, (b) drug paraphernalia,” among others. It does not name peptides. Its User Agreement allows a hold “for up to 180 days” in the cases it lists.

Can I use Shopify Payments?

Shopify Payments’ terms say its prohibited and restricted categories “are provided by each Payment Processor in your Designated Country and can be located at the links found in the Payment Processor List.” So the answer depends on the processor behind Shopify Payments in your country. Read that list before you rely on it.

Square’s Payment Terms list, among businesses that may not use the service, “(20) high-risk products and services, including telemarketing sales,”. Peptides are not named, but read the terms before you apply, because a high-risk category is decided by Square, not by you.

What will peptide payment processing cost?

At Amino Engine, your rate is quoted with your approval, in writing before your first payment. The same document lists any setup fee, payout timing, whether any reserve is held and for how long, and what a dispute costs. Compare any offer on all five, not on the rate alone.

Is there a reserve, and when are payouts?

Whether any reserve is held, for how long, and your payout timing are all set out in writing before your first payment. If another processor is holding your money today, ask it for the reason, the amount and the release date in writing.

What MCC code do peptide sellers get?

Card networks group businesses by merchant category codes (MCCs) based on what they sell. Your processor assigns yours from what your application says you sell, and it has to match your store. Never ask for a code that does not match what you sell.

What is a billing descriptor?

The name buyers see on their card statement next to the charge. Use one that matches your store name, and use the same name in your order emails, so buyers recognize the charge. Charges buyers do not recognize are a common cause of disputes.

What dispute ratio is too high?

Visa’s fact sheet says: “Excessive Merchant threshold reduced to >=150bps in AP, Canada, EU, and U.S. regions on 1 April 2026.” 150 basis points is 1.5%. Processors can act well before that, and accounts closed for excessive disputes can land on the MATCH list that other processors check.

Which cards do you take?

Visa, Mastercard, Discover and Amex, at checkout on your own WooCommerce or Shopify store. Apply at aminoengine.com/payments/apply.

Can I use WooPayments on a WooCommerce peptide store?

WooCommerce’s own guide to highly-regulated products lists, among things such stores cannot do: “Use WooCommerce services that depend on a Jetpack connection, such as WooPayments, WooCommerce Shipping, and WooCommerce Tax.” WooCommerce itself can still be used. You need a card processor that accepts the category.

What does my store need before cards switch on?

Research-use-only notices, clear shipping and refund policy pages, a way for buyers to reach you, and a billing name that matches the store. If something on the site needs fixing, we say exactly what during the review, once, before the first payment.

Payments FAQ

Peptide payment processing: your questions, answered

Short, plain answers to the questions peptide brands ask about taking cards: getting approved, what Stripe, PayPal, Shopify Payments and Square say, money terms, card network basics, and what your store needs. Each answer links to the page that goes deeper. Quotes are from each company’s own page, checked on 8 October 2026.

By the Amino Engine team. Updated 8 October 2026.

Apply now How Amino Engine payments work

Getting approved

Approval is where most peptide stores get stuck. Processors differ a lot on what they ask for: some want history or a volume minimum, some want a third-party certification, some want a reserve up front. These answers cover what Amino Engine asks for and what others say on their own pages.

Card processing for stores that sell research peptides, from a processor that accepts the category before the first payment. The processor reviews your store and documents, sets your terms, and then takes Visa, Mastercard, Discover and Amex payments for you. Amino Engine is the merchant processor for peptide brands.
Read more: What a peptide merchant account is
Not at Amino Engine. Everyone can apply, including brand new stores. Some other processors ask for history, a volume minimum or a reserve instead. Peptide Payments, for example, says: “Below the volume minimum, a merchant account is still approvable if you can fund a cash reserve.”
Read more: Payment processors for peptides, compared
We review your store and documents once, before the first payment. If something needs fixing, we say exactly what. What blocks an approval is missing documents, or a store that will not meet our site rules: research-use-only notices and clear shipping and refund policies. Never your history. Stores declined, shut down or frozen elsewhere are welcome to apply.
Read more: High-risk merchant accounts for peptides
It depends on the processor. On its own page, Corepay says it cannot assist peptide platforms without the third-party certification it names. AllayPay says it does not require one for a domestic research peptide account. Read each provider’s page before you apply. For Amino Engine, ask us about LegitScript at support@aminoengine.com.
Read more: Payment processors for peptides, compared

Stripe, PayPal, Shopify Payments and Square

Most peptide stores start on a mainstream processor. Their own terms are more nuanced than the broker pages that summarize them, so here is what each one says in its own words, checked on 8 October 2026, with a link to the page that goes deeper.

Its FAQ says: “Yes, Stripe supports the sale of many different peptides, with some limitations.” Research peptides may be sold where there are preventive measures in place that Stripe accepts, and Stripe decides whether a store meets them. A closure means its review decided a store did not.
Read more: Stripe closed my peptide store
PayPal’s Acceptable Use Policy bars activities that “relate to transactions involving (a) narcotics, steroids, certain controlled substances or other products that present a risk to consumer safety, (b) drug paraphernalia,” among others. It does not name peptides. Its User Agreement allows a hold “for up to 180 days” in the cases it lists.
Read more: PayPal and peptide stores, Frozen funds: what to do
Shopify Payments’ terms say its prohibited and restricted categories “are provided by each Payment Processor in your Designated Country and can be located at the links found in the Payment Processor List.” So the answer depends on the processor behind Shopify Payments in your country. Read that list before you rely on it.
Read more: Shopify Payments and peptides
Square’s Payment Terms list, among businesses that may not use the service, “(20) high-risk products and services, including telemarketing sales,”. Peptides are not named, but read the terms before you apply, because a high-risk category is decided by Square, not by you.
Read more: Payment processors for peptides, compared

Money terms

Rate, setup fee, payout timing, reserve and dispute cost are the five numbers that decide what processing really costs you. At Amino Engine all five are in writing before your first payment. We do not print them on this site, and we do not publish anyone else’s.

At Amino Engine, your rate is quoted with your approval, in writing before your first payment. The same document lists any setup fee, payout timing, whether any reserve is held and for how long, and what a dispute costs. Compare any offer on all five, not on the rate alone.
Read more: How Amino Engine payments work
Whether any reserve is held, for how long, and your payout timing are all set out in writing before your first payment. If another processor is holding your money today, ask it for the reason, the amount and the release date in writing.
Read more: Rolling reserves explained, Frozen funds: what to do

Card network basics

Card networks set rules every processor has to follow: how a business is categorized, what buyers see on their statements, and how many disputes are too many. Knowing the terms makes every conversation with a processor shorter.

Card networks group businesses by merchant category codes (MCCs) based on what they sell. Your processor assigns yours from what your application says you sell, and it has to match your store. Never ask for a code that does not match what you sell.
Read more: High-risk merchant accounts for peptides
The name buyers see on their card statement next to the charge. Use one that matches your store name, and use the same name in your order emails, so buyers recognize the charge. Charges buyers do not recognize are a common cause of disputes.
Read more: Chargebacks for peptide brands
Visa’s fact sheet says: “Excessive Merchant threshold reduced to >=150bps in AP, Canada, EU, and U.S. regions on 1 April 2026.” 150 basis points is 1.5%. Processors can act well before that, and accounts closed for excessive disputes can land on the MATCH list that other processors check.
Read more: Chargebacks for peptide brands

Your store

Amino Engine runs card checkout on your own store, not a marketplace. These are the store questions we hear most: which cards, which platforms, and what the site needs before cards switch on.

Visa, Mastercard, Discover and Amex, at checkout on your own WooCommerce or Shopify store. Apply at aminoengine.com/payments/apply.
Read more: How Amino Engine payments work
WooCommerce’s own guide to highly-regulated products lists, among things such stores cannot do: “Use WooCommerce services that depend on a Jetpack connection, such as WooPayments, WooCommerce Shipping, and WooCommerce Tax.” WooCommerce itself can still be used. You need a card processor that accepts the category.
Read more: Card checkout for WooCommerce peptide stores
Research-use-only notices, clear shipping and refund policy pages, a way for buyers to reach you, and a billing name that matches the store. If something on the site needs fixing, we say exactly what during the review, once, before the first payment.
Read more: Platform policy tracker

How to use these answers

Each answer is short on purpose. Where a question needs more than a paragraph, the link under the answer goes to the page that covers it in full, with the quotes and the dates. If your question is not here, email support@aminoengine.com and we will answer it, and add it to this page if others are likely to ask it too.

Two things to keep in mind when you read any answer about processors, ours included. Policies change, so check the date next to a quote. And a processor’s public page is a summary: the agreement you sign is what counts, so get the terms in writing before your first payment.

Sources

Every quote on this page is from the company’s own public page, checked on 8 October 2026:

This is general information, not legal advice.

Still have a question? Apply and ask.

Everyone can apply. No processing history required. Your rate is quoted with your approval, in writing before your first payment.