Take a 5-minute quiz, get a supplement stack built around your actual answers. The safe place to start if you're new to all this.
You've collected supplements over time: one from a friend's recommendation, one from a TikTok, one that was on sale. The problem isn't that you're taking too many. It's that nobody ever checked whether they fit you, your meds, or what your body actually needs.
Most assessment quizzes route every user to the same three SKUs. Whatever you answer, the recommendation was decided before you started.
Iron blocks thyroid medication. Ashwagandha amplifies SSRIs. St. John's Wort cancels birth control. These aren't edge cases. They're routine, and your quiz never asked.
The bottle says one capsule. The research says it depends on your weight, your levels, and what else you take. Generic doses waste money and miss results.
No subscription traps, no inventory pressure. A pharmacist-built protocol you can take to your doctor.
Twenty-one questions across your symptoms, diet, sleep, stress, medications, and conditions. Designed to surface what generic intake forms miss.
Your answers pass through 290 evidence-based rules. We filter for safety first, screen 54 drug interactions, then rank by relevance. Cited to NIH research throughout.
Each supplement comes with its dose, the form that actually absorbs, and the time of day it should be taken. With a printable PDF ready for your doctor.
We made the work visible. Here's what's actually under your stack.
Two hundred and ninety pharmacist-curated rules map your answers to ingredients, not to product SKUs. The same symptom set always produces the same recommendation, regardless of margin.
Every recommendation is checked against fifty-four common medications and supplement-supplement conflicts. Iron with thyroid meds, calcium with antibiotics, ashwagandha with antidepressants. All flagged before you ever see them.
Magnesium at night because it sedates. Iron away from coffee because tannins block uptake. Fat-soluble vitamins with meals containing fat. Your protocol respects how nutrients actually work in the body.
Every dose, every interaction, every recommendation links back to clinical literature you can verify. No mystery formulas. No proprietary blends. The evidence is part of your stack.
Urstak isn't an algorithm dressed up in lab-coat photos. The scoring logic was written and reviewed by a licensed pharmacist. The recommendations reflect clinical judgment, not affiliate links.
No subscription. No auto-renewal. No dark patterns. The full plan is a single nineteen-dollar charge for sixty days of access, then you revert to free. We sell a service, not a recurring trap.
Free to see your priorities. No credit card.
Early users who took the quiz, got their stack, and finally understood what they were taking and why.
I had a whole drawer of supplements and no idea if half of them even did anything together. The interaction part actually flagged that my magnesium and the iron I was taking shouldn't be at the same time. Nobody ever told me that.
The advice itself was solid. It told me two things mattered most and the rest could wait, which no other quiz has done for me. I do wish the quiz had a few more options to pick from. But for what I paid, getting a plan that actually checks against my meds was already worth it.
I'm on thyroid medication so I'm always nervous about what's safe to mix. Having something built by an actual pharmacist that checks against my meds gave me peace of mind I wasn't getting from random articles online.
"Patients would come into the pharmacy holding a bag of supplements they'd bought online, asking if it was safe with their prescriptions. The honest answer was usually: some of it isn't, and the rest you don't need. Urstak is the conversation I wish I could have with everyone before they buy."
What we're building next. If you hold an active plan when these ship, you get them at no additional charge.
Type in whatever you're taking, whether it's medications, supplements, or herbs, and the tool tells you if any of them clash. You'll see how serious each interaction is and what to do about it. No quiz, no signup. Just paste and check.
Your stack on your phone, where you actually take your supplements. Reminders that respect timing rules, barcode scanning for new bottles, and offline access to your full protocol.
Start free and see the priorities. When you're ready for the full protocol, you get the schedule, complete stack, and doctor-ready PDF for a single payment that covers sixty days. After that, you revert to free automatically. No charge, no chase.
An honest first look.
The complete protocol.
Five minutes with a pharmacist-built quiz. Free to take, free to read your priorities. No credit card required.
Take the quiz