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Since 1999, Pure Prescriptions has carried one uncompromising standard: if we would not recommend it to our own family, it does not belong here.
The big marketplaces stock everything — tens of thousands of bottles, no curation, no one behind the wheel. We do the opposite: a small, hand-picked shelf of practitioner-grade products. The same model since 1999.
Why It Exists
Devin Ryerson started Pure Prescriptions after fighting Hodgkin's Lymphoma — and after losing his father to leukemia. When the stakes are that personal, you stop tolerating mediocrity and start asking harder questions about what actually works. He built the company's first website in 1999 on a 56k modem from San Diego — not to chase the supplement industry, but to raise the standard for people who needed better answers.
San Diego · Family-run since 1999
In His Words
Devin built the standard. His sister Hollie helped shape sourcing and operations from the beginning. Their mother Nancy answered the calls and created the kind of trust that no marketing department can manufacture.
No outside investors. No corporate layers.
Just the same conviction that started this in 1999.
Every product on this site has been evaluated through The Method — the same framework Devin built in 1999, when the outcome was personal.
No outside investors. No corporate layers.
No compromise on what earns a place here.
25 Years of No Compromise
Before Pure Prescriptions existed, there was CancerAdvisory.org — a 501(c)(3) Devin founded from San Diego on a 56k dial-up modem. Its mission was purely informational: helping people understand how vitamins, supplements, and natural therapies could work alongside chemotherapy and radiation. No products. No commerce. Just answers for people who needed them.
CancerAdvisory.org · San Diego, CaliforniaThe people reaching out through CancerAdvisory weren't just looking for information — they needed access to the products practitioners actually trusted. Devin built Pure Prescriptions to close that gap: a direct source for practitioner-grade supplements, before the category had a name.
San Diego, CaliforniaPure Prescriptions incorporated and became one of the first online retailers to carry practitioner-only supplement brands direct-to-consumer — bringing clinical-grade nutrition to people who had no other way to access it.
Before wellness became a trendWhat had always been an instinct became a framework. Every product evaluated by the same criteria: GMP certified, third-party tested, clean labels, bioavailable forms, clinically dosed. If it doesn't pass, it doesn't ship.
The standard that defines everythingOver one million customers guided through personalized supplement protocols — by phone, by email, by a team that still picks up when you call.
And countingTwenty-five years in and the model hasn't moved: hand-pick the best, leave the rest. No outside investors, no corporate layers — the same standard we opened with, only sharper for it.
Est. 1999 · San DiegoThe Method — Our Framework
Not a trend, a badge, or a marketing phrase — just the discipline behind what we choose to offer, and what we choose to leave out.
Manufactured in facilities that follow FDA Good Manufacturing Practice standards.
A COA is available for every product we carry — verifying it is free of heavy metals, salmonella, E. coli, and microbial contamination.
No artificial colors, unnecessary fillers, or formula clutter.
Nutrient forms selected for absorption, usability, and real-world effectiveness.
Meaningful amounts backed by research, not label-decoration minimums.
Prioritizing respected certifications and practitioner-trusted quality signals when relevant.
Who This Is For
You've read labels that look good but never felt the difference.
You've bought supplements on Amazon and wondered what you're actually getting.
You want to know what your practitioners actually take — and why.
You're done with brands that spend more on influencers than on research.
You've watched supplements become content — sold by influencers, not practitioners.
You've wondered what a paid endorsement actually proves about the bottle.
You're tired of private-equity brands marketed by personalities with no background in health.
You'd rather trust a family-run shop that's been at this since 1999 — long before any of them had a following.
You're exactly who we built this for.
Independence Since 1999
Pure Prescriptions is independent by choice — curated over volume, guided by the belief that a supplement should earn your trust before it earns your purchase.
The category has grown louder and more crowded. Our answer hasn't moved.
Better products. Better standards. Better guidance. No compromise.The Method
25 years of clinical curation — so you don't have to spend years figuring out what actually works.
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