"Recommending a supplement brand is not something I do lightly; ANTI Labs is truly best in class."
Do No Harm.Only What Works.Always The Best.
Three rules, no exceptions. If an ingredient can't clear all three, we don't sell it.
From the founder
"Our biggest competitor isn't another supplement brand; it's your informed decision to take nothing at all."
100 supplements reviewed. 95 rejected.
Before we formulated anything, I reviewed the evidence behind the 100 most popular supplement ingredients. Most didn't survive.
— Aaron Esagoff, MD
Rejected Ashwagandha
The marketing runs ahead of the evidence. The human trials are mostly small, many are industry-funded, and case reports have linked ashwagandha to liver injury. Until independent data catches up, it doesn't clear our bar.
Rejected Probiotics
There is no universal microbiome. A generic strain isn't guaranteed to colonize your gut, and even when it does, more bacteria isn't automatically better for any given person. Without strain, dose, and person-specific evidence, a one-size-fits-all capsule is a guess.
Rejected Greens Powder
A pinch of everything, a real dose of almost nothing. Greens powders microdose dozens of extracts at fractions of any studied amount, and plenty of those ingredients have no human evidence to begin with. A long label isn't a formula.
Rejected Electrolytes
Sweat is mostly water and sodium, and food replaces both. Unless you're training long in serious heat — or losing fluids for medical reasons — an electrolyte powder is expensive flavored salt on top of a diet that already overdelivers sodium. Hydration needs water more often than it needs a packet.
For most healthy people, what you don't take has a bigger impact than what you do.
Do No Harm
Before anything else, we read the literature. Every ingredient gets a full scientific and human-evidence review, and we look for any way it could do harm. We only sell what comes back clearly safe, backed by decades of safety data.
Only What Works
It has to work in humans, in repeated trials that aren't funded by the people selling it. Theories and mouse studies don't count. That bar is why we rejected 95% of the ingredients we reviewed.
Always The Best
Making something to this standard is the hard part. It can take months, sometimes years, to find materials clean enough to clear our bar. Every batch is independently tested for purity, with the results published. If one fails, we don't sell it.
Do No Harm
Before anything else, we read the literature. Every ingredient gets a full scientific and human-evidence review, and we look for any way it could do harm. We only sell what comes back clearly safe, backed by decades of safety data.
Only What Works
It has to work in humans, in repeated trials that aren't funded by the people selling it. Theories and mouse studies don't count. That bar is why we rejected 95% of the ingredients we reviewed.
Always The Best
Making something to this standard is the hard part. It can take months, sometimes years, to find materials clean enough to clear our bar. Every batch is independently tested for purity, with the results published. If one fails, we don't sell it.
Founded by one physician. Checked by nine.
Nothing ships without unanimous sign-off from nine independent physicians, named and on the record.
Miguel Sanchez, MD
Stanford Medicine
Ridge Maxson, MD
Johns Hopkins
Rosalie Sleppy, MD
Penn Medicine
Earl Goldsborough, MD
Harvard Medicine
Divyaansh Raj, MD
Mayo Clinic
Henry Shu, MD
Johns Hopkins
Ashish Vankara, MD
George Washington
Lisa Young, MD
UCSF
Nic Heckenlaible, MD
University of Iowa
"Most supplements on the market have never been independently verified. ANTI Labs products are tested by an accredited third-party lab for purity and safety — every single batch."
"Other companies start with a marketing angle and reverse-engineer. ANTI Labs starts with the research and builds forward."
Don't Trust. Verify.
Every lot, independently verified against the most rigorous standards in the industry and published in full.
Every lot, independently verified against the most rigorous standards in the industry and published in full.
Most Recent Test Result
Latest batch
Creatine Monohydrate
CM-01
26 MAY 2026
26 MAY 2026
IdentityPass
Heavy MetalsPass
MicrobialPass
Better Than Nothing.
Two Products. One Standard.
Creatine Monohydrate
- >99.9% pure — re-verified every lot
- Ultrafine powder for exceptional mixability
- Tested for heavy metals and contaminants
Whey Protein Isolate
- 25g of high quality protein per serving
- Microfiltered to minimize lactose — easily digested
- Tested for heavy metals and contaminants
Questions we get
Do I actually need supplements?
Probably fewer than you think, and maybe none at all. Sleep, food, training, and relationships will do more for you than anything we sell. If your diet covers your needs and there isn't a specific, evidenced outcome you're after, you don't need to take anything. If you do decide to take something, check it against the evidence first. The Formulary lays out that evidence for every ingredient we've reviewed.
Why do you only sell two products?
Because almost nothing clears our standard: proven safe in humans, proven effective in humans. We'd rather make the definitive version of five things than a mediocre version of fifty. We reviewed the 100 most popular supplement ingredients and rejected 95. Three more products are in formulation now.
How do subscriptions work?
Your first subscription order is 25% off (15% on the every-two-months option). Every order after that is 10% off. Subscriptions ship free, automatically, and you can skip, pause, or cancel anytime, for any reason, right from your account.
What's your return policy?
Every order is covered by a 30-day guarantee. If you're not satisfied, return it within 30 days of delivery for a refund or replacement — for any reason. Full details are in our Refund Policy.
How fast do you ship, and where?
We ship within the United States. Orders ship from our US fulfillment center within 1 business day.
Are your products third-party tested?
Yes — every batch is third-party tested, and you can look up the results by lot.
Where are your products made?
In an NSF- and UL-registered, SQF-certified GMP facility in the US.
How do you decide what to sell?
We review ingredients rigorously and publish our reasoning in the Formulary — we only sell what we'd take ourselves. Of the ingredients we've reviewed, we've rejected 95%.