Natural Nootropic Stack Calculator

An interactive, safety‑oriented tool for adults in the UK/Europe to tailor daily caffeine, L‑theanine, and adaptogens for focus, calm, sleep, and cognitive aging. Uses conservative safety guidelines and evidence‑based dose ranges to suggest a personalized plan.

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54 Pieces | Natural Caffeine, L-Theanine, Vitamin B12 & B6

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Continue to calculator below to personalize your nootropic stack

Calculator Inputs

Default 2:1 (theanine to caffeine)

This calculator provides evidence-informed ranges and safety guidance. Always consult a healthcare professional for medical advice, especially during pregnancy or with chronic conditions.

Your Personalized Stack

Daily Caffeine
-
L-Theanine
-
Optimal Ratio
-
Timing
-

Adaptogen Doses (per day)

Adaptogen Dose (mg/day)
No adaptogens selected. Check the boxes above to add them.

Safety Warnings & Interactions

  • Do not exceed the recommended daily caffeine cap for your status (pregnant: up to ~300 mg/day; otherwise up to your max intake).
  • L-Theanine can help smooth caffeine effects but should be used within standard dosing ranges (typical 50–500 mg/day).
  • Adaptogens may interact with medications or medical conditions. If pregnant, nursing, taking other drugs, or having a chronic illness, consult a clinician.
  • Individual responses vary; start with lower end of dose ranges if unsure.

How the Formula Works

Inputs are combined with simple, evidence-aligned rules:

  • Caffeine limits are based on safety reviews (400 mg/day as a general ceiling for healthy adults; pregnancy uses a conservative cap around 300 mg/day).
  • L‑Theanine dose is estimated from the chosen caffeine amount using a ratio (default 2:1, theanine:caffeine) to promote focus with calm energy.
  • Adaptogen doses are inferred from common clinical ranges and adjusted for focus level. These are approximate guidelines and not a medical prescription.
  • Timings split total caffeine across morning/late morning/afternoon to reduce sleep disruption where possible.

Tips for Using the Calculator

Start Low

Always start with the lowest effective dose and monitor how you feel.

Pregnancy & Lactation

Pregnant or lactating individuals should aim for lower caffeine intake; consult a clinician for personalised guidance.

Balance Focus & Calm

Pair caffeine with theanine gradually to gauge the balance between focus and calm.

Consult Professionals

Adaptogens are optional; use only those you tolerate well and consider medical advice if you have conditions or take medications.