Your body deserves more than guesswork
Precision supplements built from your goals, your lifestyle, and your real blood data. Every ingredient third-party lab tested. Full transparency — no proprietary blends.
As seen in
Why Stack
Built different. By design.
Every ingredient lab tested, every label transparent, every dose backed by research.
Third-Party Lab Tested
Every batch tested for purity, potency, and heavy metals. Certificates of analysis available on request.
AI-Powered Formulations
Our AI cross-references your data against thousands of clinical studies to build your unique stack.
Blood Test Integration
Optional at-home blood kits let us refine your stack based on real biomarker data.
Personalized for You
Not one-size-fits-all. Every capsule in your stack is there because your body needs it.
Radically Transparent
Every ingredient, dose, and source published openly. No proprietary blends. No hidden formulas.
Adapts Over Time
Your stack evolves as your body changes. Retest, refine, repeat.
How It Works
Three steps to your Stack
Take the Assessment
Answer 6 questions about your goals, diet, and lifestyle. Two minutes. No account required.
Get Your Stack
Our AI analyzes your answers against published research to build a supplement stack specific to you.
Upgrade with Blood Data
Add an at-home blood test kit. We’ll refine your Stack based on your real biomarkers.
The Difference
Stack vs. the rest
Fewer pills. Better ingredients. Every label transparent. Every batch tested.
The Blood Test Advantage
Most supplements are built on assumptions. Yours don’t have to be.
Start with our assessment and get a personalized supplement stack based on your goals and lifestyle. That alone puts you ahead of 90% of supplement buyers.
Then, go further. Add an at-home blood test kit, and we’ll cross-reference your real biomarker data with your stack — adjusting dosages, swapping ingredients, and filling gaps that no quiz can catch. Every adjustment is transparent: you’ll see exactly what changed and why.
At-Home Kit
Lab Analysis
Stack Refined
Biomarker Report
Latest ResultsTrusted By Thousands
Real people. Real results.
“I was taking 8 different supplements with no idea if they were working. Stack replaced them all with 4 targeted capsules.”
“The blood test integration is what sold me. My vitamin D was tanked and I had no idea. Stack caught it immediately.”
“Finally, supplements that feel like they were actually made for me. The difference after 30 days was obvious.”
“My sleep quality improved within two weeks. The magnesium and ashwagandha combo in my stack is perfect.”
“As a runner, recovery is everything. Stack tuned my supplements to my training load — game changer.”
“I love that it evolves with me. After my last blood test, they swapped two ingredients automatically. That level of precision is incredible.”
“I was taking 8 different supplements with no idea if they were working. Stack replaced them all with 4 targeted capsules.”
“The blood test integration is what sold me. My vitamin D was tanked and I had no idea. Stack caught it immediately.”
“Finally, supplements that feel like they were actually made for me. The difference after 30 days was obvious.”
“My sleep quality improved within two weeks. The magnesium and ashwagandha combo in my stack is perfect.”
“As a runner, recovery is everything. Stack tuned my supplements to my training load — game changer.”
“I love that it evolves with me. After my last blood test, they swapped two ingredients automatically. That level of precision is incredible.”