L-Theanine Safety

Overall Safety Score

76 /100

Human Evidence

3 /100

There are several good-quality human studies on its safety.

Evidence Strength

3 /100

Most studies show it's safe when taken as recommended.

Adverse Effects

4 /100

No known side effects have been reported at normal doses.

Drug Interactions

3 /100

No interactions found in available studies.

Long-term Safety

2 /100

A few studies show it’s likely safe for long-term use.

Dosage Safety

3 /100

High doses might cause mild effects, but nothing harmful.

Population Suitability

3 /100

Safe for most healthy adults across all groups.

Bioavailability

3 /100

It absorbs well enough to avoid misuse risk.