Tracking L-theanine

The calm-without-sedation amino acid, common in evening wind-down stacks and anxiety-adjacent routines.

The did-it-help record

Pairs with anxiety and sleep-onset entries: log the habit, log the symptoms, and let weeks of overlay speak. Perity shows alignment from your own record — never a verdict on whether it works.


Perity informs, never prescribes — decisions belong with you and your clinician.

Educational content, written and maintained by Perity (founder: EiEi), grounded in the sources cited in Perity's Learn library. It is not medical advice, and Perity never interprets your data or recommends treatment. Last reviewed 2026-07-09.

Perity is in private beta on iPhone. Join the waitlist for early access — no real name required.

← All guides · Join the waitlist