Peptide Platform Protocole Emerges From Stealth With $6M in Tow

The peptide category just got a members-only club with a $6 million seed round to back it up

Peptides, but make it invite-only. Welcome to 2026.

Meet Protocole, a new peptide platform building its network the old-fashioned way — one verified member at a time.

The startup just emerged from stealth with a $6 million seed round led by Rare Capital and has a waitlist of thousands, according to the company.

Co-founded by Delphine Le Grand and Cindy Yan, Protocole offers members clinician oversight and personalized peptide protocols based on their health goals, such as recovery, performance and longevity. All formulations are compounded and tested by FDA-registered pharmacies in the U.S. and the peptides are self-administered via injection just under the skin.

The funding will be used to expand Protocole’s clinical infrastructure, protocol library and member experience systems.

“Peptides are at an inflection point,” Le Grand said. “What Cindy and I saw firsthand was that demand was accelerating far faster than the systems around quality, guidance and access. As regulation catches up to the category, there’s a need for infrastructure that makes peptides safe, legible and scalable.”

Protocole currently offers a Core Access membership tier, priced at $60 a month, which covers protocol recalibration consults every three months, ongoing clinical support, unlimited messaging with a care team and expedited delivery. Peptides are sold separately and are not included in the membership fee. Protocole notes that most peptides cost $200 per vial and last approximately four to six weeks.

As for the velvet rope treatment, membership is referral-based, according to the company’s website.

“To maintain exclusivity, trust and quality of the network, every new member must be verified by an existing member before being approved,” Protcole states. “This ensures that everyone who joins shares the same standard of commitment, discretion and culture that defines our community.”

Two additional programs are in the works, according to the website: Skin by Protocole, focused on collagen support and damage repair and Precision Protocols, which will be informed by advanced lab testing.

Though proponents cite benefits ranging from muscle recovery and anti-aging to immune health, some skeptics argue the evidence base outside of GLP-1s remains thin. 

Still, the momentum is hard to ignore, and even gyms want in. UFC Gym recently announced a joint venture with longevity medicine company NexGen MD Scientific to place clinics inside its locations, giving members access to GLP-1s, peptides and hormone therapies as part of a broader gym-as-clinic movement that has drawn in several leading operators.