Peptides are the fastest-growing category in wellness medicine and the one with the least settled rules. That makes them the place LegitScript applications most often go wrong, usually because of a single product listing the owner didn't think twice about.
Three kinds of peptide product, three answers
| Product | Can it sit in a certified business? |
|---|---|
| FDA-approved peptide drugs (semaglutide, tirzepatide, tesamorelin, bremelanotide and others), prescribed and dispensed through licensed channels | Yes |
| Compounded peptides from a licensed 503A/503B pharmacy, using an ingredient that's lawful to compound, on a valid prescription | Yes, if the compounding basis is lawful and documented |
| "Research use only" / "not for human consumption" peptides sold to or used on patients | No |
The third row is the one that ends applications. LegitScript's Legal Compliance standard doesn't allow facilitating unapproved drugs, and an RUO vial injected into a patient is an unapproved drug no matter what the label says. Removing the words "research use only" from the listing doesn't change what it is.
Where FDA stands on BPC-157 and friends
FDA had placed a group of popular peptides in "Category 2" of its 503A bulk drug substance lists, meaning significant safety concerns and effectively no compounding. In 2026, FDA removed twelve peptides from Category 2: BPC-157, TB-500 (thymosin beta-4 fragment), GHK-Cu, KPV, MOTs-C, epitalon, DSIP (emideltide), Semax, dihexa, LL-37 (cathelicidin), Melanotan II and PEG-MGF.
Only GHK-Cu moved to Category 1. The rest aren't on any 503A nomination list right now. Removal from Category 2 isn't permission to compound. Placement on the 503A bulks list requires an advisory committee review and rulemaking, which FDA began in 2026 and which typically takes a year or more.
For a LegitScript application, that means a program built on BPC-157 or TB-500 is built on an ingredient whose compounding status is unresolved. Expect questions, and expect reviewers to look at exactly which pharmacy compounds it and under what authority.
How to build a peptide program that can be certified
- Lead with FDA-approved peptides and peptides with a clear compounding basis
- Use a licensed 503A pharmacy that's licensed in every ship-to state and certified or accredited itself
- Get the pharmacy's written position on each ingredient it compounds
- Remove every RUO product from your site, retail shelf and supplier list
- Write prescribing protocols per product: indication, screening, dosing, monitoring
- Describe compounded peptides as compounded and not FDA approved; drop "healing," "regenerates," "anti-aging" claims you can't substantiate
See our peptide programs for how we structure this.
Advertising peptides
Even certified, peptide ads are hard. The platforms restrict unapproved drugs and injectable products, and names like BPC-157 are flagged on their own. Most certified peptide programs advertise the clinical service (recovery, weight management, a physician consult) rather than the molecule.
Peptide program LegitScript checklist
What to watch next
Peptide rules are moving. Three things will decide what a certified peptide program can offer in 2027:
- Outcomes of FDA's Pharmacy Compounding Advisory Committee reviews of the removed Category 2 peptides
- Any proposed rule adding peptides to the 503A bulks list, and the comment period that follows
- State board of pharmacy action on peptide compounding and RUO sales
We update this page as those land. The LegitScript hub always carries the current summary.
Where MDside fits
MDside is LegitScript certified and works with peptide clinics every day. We write the protocols, supply the licensed prescribers, and tell you which products belong in a certified program and which don't, before a reviewer does. Book a call.
Frequently asked questions
Can a peptide clinic get LegitScript certified?
Yes, if it prescribes FDA-approved peptides or lawfully compounded peptides from a licensed pharmacy on valid prescriptions, and sells no research-use-only products for human use.
Can I sell research use only peptides and still get LegitScript certified?
No. RUO products sold to or used on patients are unapproved drugs. That fails LegitScript's legal compliance standard regardless of labeling.
Is BPC-157 legal to compound in 2026?
FDA removed BPC-157 from Category 2 in 2026, but it is not on the 503A bulks list or a Category 1 nomination list. Its compounding status is unresolved, and removal from Category 2 is not permission to compound.
Which peptide moved to Category 1?
GHK-Cu was the only one of the twelve peptides removed from Category 2 that was recategorized to Category 1.
Can I advertise BPC-157 on Google or Meta?
Unapproved drugs are generally prohibited in ads, and LegitScript certification does not change that. Certified peptide programs typically advertise the clinical service instead.
Related reading
Sources
- LegitScript: certification standards
- LegitScript: process and pricing
- Sheppard Mullin: status update on peptide regulation
- FDA: bulk drug substances nominated for use in compounding
Running a peptide program?
Find out which products belong in a certified program before a reviewer does.