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§2.9.4 · ChemicalsNootropics

L-Theanine

5-N-Ethyl-Glutamine

Also known as Theanine

Acute: Lower riskDependency: Lower risk

Images

Quick reference

Routes
Oral

Experience

Primary effects

  • Reduces the edgy stimulation of caffeine while maintaining alertness, leading to a smoother, mellower experience.
  • Promotes relaxation without causing sedation and can alleviate anxiety.
  • May subtly enhance mental clarity and aid in maintaining wakefulness without jitters or fogginess.

Peak character

  • Induces a calm, relaxed disposition with increased clarity of mind.
  • The experience is gentle, subtle, and pleasant, facilitating mindfulness.
  • Can remove anxiety and contribute to a mellow, non-jittery state of alertness.

Negatives / side effects

  • High doses might lead to mild stomach upset, though this could be confounded by diet.

Aftereffects / comedown

  • Effects fade gently, leading to a soft landing without disruption to normal routines or sleep.
  • No notable next-day issues or withdrawal were reported.

Reference dosage

Reference ranges from third-party harm-reduction databases. Individual response varies enormously — start lower than you think.

Any route
common100mg

Reagent testing

Adulterant detection: Amino acid supplement — no useful colorimetric drug reagent test.

Generally low risk; supplement-grade product with COA is appropriate quality assurance.

Source

Reference fields and narrative for L-Theanine extracted from The Drug Users Bible by Dominic Milton Trott (MxZero Publishing, 2022).

drugusersbible.com

Harm reduction notice

This platform provides educational and harm-reduction information adapted from public reference material. It does not endorse, encourage, or facilitate drug use. It is not medical advice. If you or someone near you may be in a medical emergency, contact local emergency services immediately.