PlainPill

L-Theanine and Caffeine

People mainly take L-Theanine and Caffeine for anxiety, energy. Based on 6 first-hand reports. Ranked #1524 of 3,539 overall.

19
User score
Mostly positive
33% positive0% mixed17% negative50% unclear

Of reports that state an outcome, 66% are positive.

Clinical research
Research pending

What L-Theanine and Caffeine does, according to users

Of the people who reported each effect, the share who said it got better.

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

Research data for L-Theanine and Caffeine is being compiled.

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

1-2x dailyas reported
not dailyas reported

Reported side effects

How often each side effect came up across all reports.

No side effects reported so far.

What users say

First-hand experiences, quoted verbatim. We show one positive and one negative where both exist.

Other options for anxiety

User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 3, 2026. How we rate