Nootropic
Caffeine + Theanine Stack
Also known as: Smart caffeine
The most popular beginner nootropic combination. Smooth, focused energy.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Primary uses
- Focus
- Energy
- Calm alertness
How it works
- Caffeine provides alertness
- Theanine smooths edges
- Alpha wave enhancement
Dosage
- Typical range
- 100mg caffeine + 200mg L-theanine
- Timing
- Morning/before work
- With food
- Optional
- Duration
- Safe daily
- Special populations
- Beginners, productivity
Forms
- Combined pills
- Separate
Safety
Common side effects
- Milder than caffeine alone
Contraindications
- Caffeine sensitivity
Evidence notes
Most popular basic stack
Grade A: Multiple well-designed human trials support the main claims.
Caffeine + Theanine Stack compared head-to-head
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.