Built for the user the space forgot.

The user who reads the studies had no platform built for them.

Peptides became one of the fastest-growing categories in self-directed health, and the worst-served by tooling. Users were stitching workflows across calculators that didn't talk to schedules, forums that didn't apply evidence standards, and sourcing decisions made on the basis of forum chatter — six different functions, four different apps, no integration.

We started PepStakk because the user who wants to understand what they're doing — who reads the studies, runs their own protocol, and respects the science — had no platform built for them.

The user is the decision-maker.

We believe in informed self-direction. Our job is to surface research-grade intelligence (Decide), help architect the stakk (Build), get the dose math right (Dose), run it day-to-day (Run), keep the supply line vetted (Resupply), and provide access to expert review when the user wants it (Review).

We are not a clinic. We are not a substitute for medical care. We are the vertically integrated operating system for the informed peptide user — and a bridge to a practitioner when the user decides they want one.

Powered by Bar13 Ventures.

PepStakk is powered by Bar13 Ventures. Our team brings deep operational experience across product, regulatory, and supply-chain — the three disciplines this category demands at once. Our practitioner network is built in partnership with licensed peptide-specialist practitioners.