AlphaWave® L-Theanine (NutriScience)

AlphaWave® is a branded L-theanine from NutriScience, the calming amino acid found naturally in tea. L-theanine promotes a state of relaxed alertness, easing stress and supporting focus without sedation, and AlphaWave has been tested for safety and effects in a 28-day human trial.

AlphaWave L-Theanine is researched primarily for Stress & Anxiety, Cognitive, and Sleep Health. L-theanine promotes relaxation and eases stress while keeping the mind alert, a combination that makes it popular for daytime calm and focus.

The clinically studied dose is 100 to 200 mg per day, taken as needed for calm focus or before sleep. Always follow the product label and check with a healthcare provider for personal advice.

For most healthy adults, AlphaWave L-Theanine is well tolerated at studied doses. Reported effects can include: Generally well-tolerated — L-theanine is very safe and non-sedating at normal doses. Side effects are rare; mild headache is occasionally reported. It may also interact with some medications. AlphaWave L-Theanine is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Possible interactions include: Blood pressure medication — L-theanine may mildly lower blood pressure; monitor. Stimulants — L-theanine is often combined with caffeine to smooth its effect. If you take prescription medication, check with a pharmacist or doctor before using it.

NutraSmarts rates the evidence for AlphaWave L-Theanine as Moderate (3 out of 5). It is backed by 1 clinical trial and 1 cited reference summarized on this page. A higher rating reflects more, larger, and better-designed human studies.