Build your longevity stack with the fewest bottles possible.
Seven quick questions build an evidence-ranked supplement stack around your goals: all-in-one formulas that cover most of your targets first, then single ingredients only for the gaps. Every pick carries a BioHarmony evidence rating, so you can see the science before you buy.
About 90 seconds · 7 steps · instant stack · See how it works
- ✓ Ranked by evidence, not by how many boxes a label ticks
- ✓ Fewest bottles first: formulas before a pile of singles
- ✓ Free. No email needed to see your top picks
What is the Longevity Stack Builder?
The Longevity Stack Builder is a free tool that designs a personalized supplement stack around your goals, age, budget, and experience level. Instead of handing you a 15-bottle shopping list, it starts with all-in-one longevity formulas that cover most of your targets, then adds single ingredients only where a gap remains.
Every recommendation is ranked by its BioHarmony evidence rating, Outliyr’s 0-100 scoring of the research behind each compound, so “popular” never outranks “proven” without you knowing it.
How it works
From goals to an evidence-ranked stack in 90 seconds
Set your goals and context
Pick what the stack should do: energy, focus, sleep, fat loss and blood sugar, looking younger, or living longer. Then your age band, experience level, evidence appetite, budget, and form preference.
Screen the foundation
The builder checks which basics you already cover, like magnesium, creatine, and vitamin D/K2, plus optional medication and pregnancy screens, so it never stacks on a shaky foundation or an unsafe overlap.
Get your shortest stack
You instantly see your best-fit all-in-one formulas and the single ingredients that fill the gaps, each with its BioHarmony rating, what it covers, and the discount code when we have one. Email is optional, for the full ranked list.
Why it works
Most stacks fail from too many bottles, not too few
Evidence-graded picks
Every compound and formula carries a BioHarmony rating from 0 to 100 based on the underlying research, with labels like “established” and “frontier” so you always know which kind of bet you’re making.
Formulas before singles
All-in-one longevity formulas get ranked by evidence and fit to your goals, not by ingredient count. Singles are added only for targets your formulas miss, which is how you end up with four bottles instead of fourteen.
Foundation and safety first
Beginners start at the foundation tier. Age-gated compounds only appear where the evidence supports them, and the optional safety screen flags medication and pregnancy conflicts before anything is recommended.
Part of the Outliyr platform
Assess, don’t guess
A stack is a hypothesis, not a subscription. Start with the fewest bottles that cover your targets, run it long enough to feel a difference, and climb tiers only once the foundation feels boring and consistent. A free Outliyr profile keeps your stack tied to your goals, and members get every tool we build.
What is the Longevity Stack Builder?
The Longevity Stack Builder is a free tool from Outliyr that designs a personalized longevity supplement stack around your goals, age band, experience level, evidence appetite, budget, and form preference. It recommends all-in-one formulas first, then single ingredients only for the targets your formulas miss, so you get the shortest stack that covers what you’re after.
What is a BioHarmony evidence rating?
BioHarmony is Outliyr’s 0-100 evidence scoring for supplements and compounds. It grades the quality and consistency of the research behind each ingredient, and labels picks as established or frontier. In the builder, rankings are driven by these ratings and fit to your goals, so a well-marketed formula with weak evidence can’t outrank a proven one.
How is this different from a supplement quiz that sells one brand?
Single-brand quizzes funnel every answer toward their own product line. The builder ranks formulas and single ingredients across brands by evidence and fit, shows you why each pick made the cut, and includes discount codes where we have them. Outliyr may earn from links, but commission never changes the ranking.
How long does it take?
About 90 seconds. It’s seven steps, and your stack appears the moment you finish: best-fit all-in-one formulas, gap-filling singles, and what each one covers. You can see your top picks without entering an email.
Is the Longevity Stack Builder free?
Yes, completely free, and you can rebuild your stack any time your goals, budget, or foundation change. Entering your email is optional and only used to send your complete ranked stack with every pick, product link, and code.
Is this medical advice?
No. The Longevity Stack Builder is an educational tool for general wellness and self-experimentation. It does not diagnose, treat, cure, or prevent any disease, and the optional safety screen is not a substitute for medical review. Talk with your clinician before starting new supplements, especially with medications or during pregnancy.
For AI agents
Your AI assistant can build your evidence-ranked longevity stack for you. Point it at the Outliyr MCP endpoint and call the recommend_longevity_stack tool. Free, no API key, and the full tool catalog lives in our llms.txt.
Start now
The shortest stack that covers what you’re after
Ninety seconds, seven questions, one evidence-ranked stack with the fewest bottles that get you there. Know exactly what to take first, and what to skip.
