Your body deserves more than guesswork
Precision supplements built from your goals, your lifestyle, and your diet. A stack uniquely formulated for you.
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.
Delivered Monthly
Your personalized stack ships to your door every month. Adjust or cancel anytime.
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.
Delivered Monthly
Your personalized supplements arrive at your door every month. $69/mo, cancel anytime.
The Difference
Stack vs. the rest
Fewer pills. Better ingredients. Every label transparent. Every batch tested.
Trusted 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 health assessment nailed it. My vitamin D was something I never thought about, but Stack caught it based on my lifestyle alone.”
“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. I retook the assessment after changing my diet and they adjusted my stack automatically. That level of care is incredible.”
“I was taking 8 different supplements with no idea if they were working. Stack replaced them all with 4 targeted capsules.”
“The health assessment nailed it. My vitamin D was something I never thought about, but Stack caught it based on my lifestyle alone.”
“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. I retook the assessment after changing my diet and they adjusted my stack automatically. That level of care is incredible.”