Theanine

links: Nootropics Amino Acid reference: 4-13-2021

(L-)Theanine #

• In patients with schizophrenia, was a glutamate reputake inhibitor (reduces Glutamate Transporters) R. Similar to glutamate in structure, it has a low affinity for their receptors. No mystery though that theanine increases brain GABA nonetheless.

• Antagonistic effects on mGluR1.

• Reduces nicotine-induced nAChR upregulation. Inhibits D-Serine uptake R.

• Attenuates high blood pressure; decreases resting heart rate

• Decreases Histamine release from mast cells.

• Induces lower-frequency Neural Oscillations.

• L-Theanine + Caffeine improves sustained attention and reaction time while either substance alone decreased reaction time R

Supplementation #

• Dose: 100-200mg 1-4x, or a 1:2 ratio to caffeine.
• Timing: ~30-10 minute onset, ~1.5 hour half-life

• Purebulk: $4.50 for 25g