Tested 3× for purity & potency·Independent, peer-reviewed studies·Made in the USA·Free shipping over $75·60-day money-back guarantee·The exact ingredient from the research·
The Studied Dose lineup — Astaxanthin, Saffron, Berberine, NMN — on a kitchen counter
The dose the studies used.

Supplements that
actually do something.

Every ingredient here is backed by real human research — used at the dose those studies used, and tested three times before it reaches you. No proprietary blends, no guesswork.

Dose VerifiedStudy VerifiedLot VerifiedTesting Verified
Tested 3× for puritySupplier, our lab, then an independent lab. Read every report.
Backed by real researchPublished human studies behind every ingredient — not just marketing.
Sourced worldwideItalian olive oil, Spanish saffron, Japanese fermentation.
Made in Utah, tested in BellinghamMade in Lindon, UT, verified in our Bellingham, WA lab. Purest sources.
Proven, not promised

Ingredients proven to work.

Each active has one real job — calmer mood, steady energy, antioxidant defense — and published human research showing it delivers. We use the exact studied forms (AstaReal®, Affron®, Setria®, Kaneka™) at the doses the trials actually used. Proven, third-party tested, and every study is yours to read.

See the research →

Amber softgels spilling from an open jar onto warm limestone — the studied dose, and nothing else.
The lineup

What we make.

Each product does one job, with one ingredient — the one the research was done on, at the amount researchers used. No blends hiding a pinch of the good stuff. No filler you're paying for. If we can't point to a study, it doesn't go in the bottle.

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Tested. Dosed. Disclosed.

Every lot is third-party tested, dosed to match the clinical research, and shipped with the paperwork to prove it. If we can't cite it, it doesn't go in the bottle.

Testing

We test it three times. So you can trust it.

Testing once isn't enough. The supplier tests it. Our own lab tests it again. Then an outside lab — one with no reason to be nice to us — tests it too. Want the report? Just ask.

01
Supplier

Tested at the source

Every supplier tests its raw material and ships it with a Certificate of Analysis. If the paperwork isn't right, the material doesn't move.

02
In-house

Tested again in Bellingham

We don't take the COA's word for it. Our own lab re-checks identity and potency on arrival, and rejects anything off spec.

03
Third-party

Tested by an independent lab

The finished lot goes to an ISO-accredited lab we don't own — potency, heavy metals, microbials. Only then does it earn a label.

How we test, in full →
Sourcing

We go where it grows best.

The best olive oil and the best saffron don't come from the same place. So we don't pretend they do. We find the right source for each ingredient — and we can name the town.

See where everything comes from →

One ingredient at its source: saffron stigmas drying on a rack in La Mancha, or the first cold press of Puglian olives. Hands in the work, golden hour, a real place you could name.
AstaReal® Astaxanthin
Gotland, Sweden
Extra-Virgin Olive Oil
Puglia, Italy
Affron® Saffron
La Mancha, Spain
Berberis aristata
Uttarakhand, India
The research
“We don't make the claims. The studies do.”

We'd rather hand you the research than sell you a feeling. Every ingredient we use has human studies behind it — read them yourself before you spend a dollar.

See the studies →

8,990reviews across the system · 4.7 average
20+peer-reviewed studies cited across the line
independent checks before any lot ships
An older couple walking a tree-lined path in golden autumn light — the whole point: more good years.
Why we do this

Built for the long run.

A supplement is a daily promise to your future self. We keep it honest — the studied ingredient, at the studied dose, with the receipts — so the years you're adding are good ones.

See the evidence →

Reviews

Don't take our word for it.

★★★★★ 4.7 average · 3,120+ verified reviews

A real customer, mid-40s, bottle in hand at a kitchen counter. Phone-shot but well-lit and unstyled — believable, not a model.
An open palm with a single softgel beside a morning coffee. Natural window light, real hands, no props.
The bottle next to a laptop and a glass of water on a work desk — the product in ordinary daily context.
★★★★★
“The only brand whose label I don't have to fact-check.”
Dana R. · Verified Buyer
★★★★★
“Switched from Thorne on the astaxanthin. Same rigor, the olive oil carrier is a smart touch, better price.”
Paul M. · Verified Buyer
★★★★★
“I emailed asking for a COA on the NMN and they actually sent it. Sold.”
Priya S. · Verified Buyer
★★★★★
“Magnesium that helps me sleep without the gut drama of the cheap stuff.”
Greg T. · Verified Buyer
★★★★★
“Finally a saffron that lists the actual Affron dose instead of hiding it in a blend.”
Mara L. · Verified Buyer
★★★★★
“I'm a pharmacist. These are the only labels I'd hand to my own parents.”
Devin O. · Verified Buyer
★★★★★
“The CoQ10 is ubiquinol, not the cheap oxidized form. They know the difference and so do I.”
Helen W. · Verified Buyer
★★★★★
“No proprietary-blend nonsense. One ingredient, the studied dose, a COA on request. Done.”
Marcus B. · Verified Buyer
★★★★★
“Cancelled my old 'multivitamin' stack and just take the two things I actually needed.”
Sofia R. · Verified Buyer
★★★★★
“Berberine that actually moved my fasting glucose. I checked — that's why I trust the dose.”
Tom K. · Verified Buyer
Read all reviews →

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