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caffeine and l-theanine

L-theanine smooths caffeine's effects

What's happening

L-theanine promotes calm focus and reduces caffeine's jittery side effects while preserving alertness benefits.

Recommendation

Classic nootropic stack - take together for focused energy.

Timing

Take together; typical ratio is 2:1 theanine:caffeine

Sources

  • — Nutritional Neuroscience
  • — Psychopharmacology

Frequently Asked Questions

Can I take caffeine and l-theanine together?

L-theanine smooths caffeine's effects. Classic nootropic stack - take together for focused energy.

How should I time caffeine and l-theanine?

Take together; typical ratio is 2:1 theanine:caffeine

Is this interaction dangerous?

This interaction is rated “Synergy” by Formulate. L-theanine promotes calm focus and reduces caffeine's jittery side effects while preserving alertness benefits.

Want to check your whole stack?

The free checker lets you add any combination of supplements and medications at once. Formulate's desktop app goes further — every stack change surfaces interaction alerts automatically.

Open the checkerGet the desktop app

Medical disclaimer. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.