L-Theanine
Calm focus · Taking the edge off caffeine
Studied dose: 100–200 mg per serving, up to ~400 mg daily in studies.
Read the full breakdownThe Clean Focus Stack Guide
A stimulant-free focus stack, explained honestly.
This is the guide waitlist members get on signup: what a clean, stimulant-free cognitive stack actually looks like, the evidence behind each active, and how to tell a transparent formula from a proprietary blend.
Start here
How to evaluate any focus stack — not just ours.
Before looking at a single ingredient, four questions separate a credible stack from a hype one.
Is there human evidence, or only lab and animal data?
Cell studies and rodent data are a starting point, not proof of an effect in people.
Does the label dose match the studied dose?
An ingredient can be well-studied and still underdosed on a label. The number on the bottle has to match the number in the research.
Is every dose disclosed, or hidden in a proprietary blend?
A blend that hides milligrams per ingredient can't be evaluated against the evidence at all.
What are the honest cautions and interactions?
A credible ingredient page tells you who should avoid it, not just who it's for.
The actives
Five stimulant-free cognitive actives, at a glance.
The working v1 direction for Signal State Core — each disclosed at its own studied dose, no proprietary blend. Grades are our own conservative reading of the human research, not a promise of effect.
Citicoline
Focus · Mental energy
Studied dose: 250–500 mg per serving in many studies.
Read the full breakdownBacopa Monnieri
Memory support · Learning over weeks
Studied dose: 300–600 mg daily of a standardized extract (commonly ~50% bacosides).
Read the full breakdownRhodiola Rosea
Stress-related fatigue under sustained pressure (night shifts, exam-type load) · Sustained output when already under stress or fatigue
Studied dose: 200–400 mg daily of a standardized extract (commonly 3% rosavins, 1% salidroside).
Read the full breakdownPhosphatidylserine
Memory support · Cognitive load and stress
Studied dose: 100 mg two to three times daily (≈200–300 mg total) in many studies.
Read the full breakdownThe foundation
Two foundational nutrients — not cognitive actives.
Included for their own well-established roles, not as focus ingredients. They don't carry a cognition claim.
B-Complex (B6, B9, B12)
Foundational neurological and metabolic support · Older adults or low dietary B intake
Read the full breakdownVitamin D3
Foundational nutritional support · Correcting or preventing low vitamin D status
Read the full breakdownStacking
A few practical, evidence-grounded stacking notes.
General patterns worth knowing when comparing any stimulant-free focus stack — not dosing instructions.
- L-Theanine and citicoline are commonly paired in the research as a calm-focus combination.
- Bacopa Monnieri and Rhodiola Rosea are cumulative — benefits are studied over weeks, not a single dose.
- Stacking more than one cholinergic ingredient (citicoline, phosphatidylserine) without a clear rationale adds cost and side-effect risk without added benefit.
- An activating adaptogen (Rhodiola) and a calming one (ashwagandha) work in different directions — pick for your actual need, not both by default.
Pre-launch concept site. Product, formula, claims, certifications, and regulatory language are subject to expert review before public launch. Content on this site is educational and is not medical advice. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.