In Stock
Doctor's Best

L-Theanine, AlphaWave®, 200 mg, 60 Veggie Caps

4.8 · 291 reviews
1,698 ₽

Science-Based Nutrition™ AlphaWave ® Supports Relaxation and Mental Clarity Dietary Supplement Non-GMO Gluten Free Soy Free Vegan At Doctor's Best, we ride the wave to relaxation with Alpha Wave® L-Theanine. Our highly purified, patented form of L-theanine is known for promoting calm with a state of relaxed wakefulness. Beyond addressing stress, it assumes a pivotal role in various cognitive processes, shaping alpha brain waves and contributing to attention, memory, and creativity. Supports relaxation without drowsiness Promotes mental clarity and focus Helps reduce nervous tension

International delivery

Shipping calculated at checkout

Returns & exchanges

Within 30 days of delivery

Science-Based Nutrition™ AlphaWave ® Supports Relaxation and Mental Clarity Dietary Supplement Non-GMO Gluten Free Soy Free Vegan At Doctor's Best, we ride the wave to relaxation with Alpha Wave® L-Theanine. Our highly purified, patented form of L-theanine is known for promoting calm with a state of relaxed wakefulness. Beyond addressing stress, it assumes a pivotal role in various cognitive processes, shaping alpha brain waves and contributing to attention, memory, and creativity. Supports relaxation without drowsiness Promotes mental clarity and focus Helps reduce nervous tension

Customer reviews

5.0
verified purchase

Since I am taking it my sleep quality improved, I sleep longer and with less breaks. I am not groggy next day. A capsule not too big and easy to swallow. I am very happy with this product.

9/5/2026
5.0
verified purchase
Great!

've been taking this L-theanine for a few weeks and have been happy with the results. It helps me feel calmer and more relaxed without making me sleepy. I've noticed it's easier to stay focused during the day, and it also helps me unwind in the evening. The capsules are easy to swallow, and I haven't experienced any side effects. I would definitely purchase it again.

7/5/2026
5.0
verified purchase
Good Supplement from iHerb

The delivery of the package took about less than a week. I would say is pretty efficient! I chose this supplement from iHerb base on his good review, stars and ingredients. I took the larger size as 60 capsules as it cheaper. Lastly, I stack with magnesium which helps in my quality of sleep; which greatly benefit my training, energy level at work and promotes better muscles recovery.

6/19/2026
5.0
verified purchase

I’m very pleased with my experience using this product. The quality is excellent and I felt noticeable improvements after taking it consistently. It has helped me feel more balanced and comfortable overall, especially during busy and stressful days. The capsules are easy to take and gentle on the stomach, which I really appreciate. I also like that it’s well-packaged and arrived in perfect condition. The size is practical and offers great value for the price. I’ve tried many different wellness products before and this one truly stands out in terms of effectiveness and consistency. I will definitely continue using this in my daily routine, and I highly recommend giving it a try if you’re looking for something reliable and beneficial for overall wellness.

3/16/2026
5.0
verified purchase
Dr.'s Best it is

Brand is very reliable, product is wonderful, ingredient list is short. No drowsiness, but you need to stay consistent and take it daily to experience its max efficacy.

12/21/2025
5.0
verified purchase
Smooth, Centered Calm Without Drowsiness

200 mg of AlphaWave® L-Theanine — a clinically studied form known for promoting relaxed focus. The dose is right in the sweet spot: strong enough for noticeable mental ease, yet still clean and gentle without any sedating effect. I appreciate the simplicity here. No herbs, no blends — just pure L-theanine that reliably softens stress, improves concentration, and takes the edge off overstimulation. A great daily support for calm alertness.

11/19/2025
5.0
verified purchase

I ordered this product to address several issues: sleep, stress, and fatigue. It gently affects mood and the brain, reducing stress levels. It also improves concentration and attention. The capsules are typically sized and have a neutral capsule flavor. It's a high-quality and effective product. The packaging is convenient.

11/12/2025
5.0
verified purchase
최고!

Quality is super! The ingredients are great! Size arranged! What you need! Performance is felt! the product arranged, perfectly packed, the effect is definitely there! I will order more! Just as quickly delivered

10/28/2025
5.0
verified purchase
Health Support

This supplement truly shines due to its commitment to high-quality, clearly sourced ingredients, providing peace of mind with every serving. I noticed a subtle but positive shift in my overall well-being, including improved daily energy and smoother systemic function. For anyone looking to support their foundational health with a well-made product, this offers excellent value and reliable results

10/23/2025
5.0
verified purchase
Needed for me

I often feel a crush and jitters with caffeine so I pair it with this supplement to avoid this, also in my stack pre sleep

10/1/2025