In Stock
Vitacost

L-Theanine With Calcium and Phosphorus, 60 Tablets

4.8 · 92 reviews
1,284 ₽

With Calcium and Phosphorus Promotes Feelings of Calmness Targeted Wellness Potency - Purity - Pride Dietary Supplement Amino acid from green tea promotes feelings of calmness and mental focus. Formula also supplies 17% of the Daily Value for calcium. What is L-Theanine? L-theanine is an amino acid found naturally in green tea (Camelia sinesis). For centuries, green tea has been used in Asia for its calming properties, as well as its health promoting effects. L-theanine may be one of the larger contributing constituents in green tea that supports feelings of relaxation without drowsiness. What are the key benefits of Vitacost® L-Theanine? Promotes feelings of calmness Nurtures greater mental focus Supports healthy brain function Supports brain cell resistance to oxidative stress and is neuroprotective Maintains healthy blood pressure already within normal limits

International delivery

Shipping calculated at checkout

Returns & exchanges

Within 30 days of delivery

With Calcium and Phosphorus Promotes Feelings of Calmness Targeted Wellness Potency - Purity - Pride Dietary Supplement Amino acid from green tea promotes feelings of calmness and mental focus. Formula also supplies 17% of the Daily Value for calcium. What is L-Theanine? L-theanine is an amino acid found naturally in green tea (Camelia sinesis). For centuries, green tea has been used in Asia for its calming properties, as well as its health promoting effects. L-theanine may be one of the larger contributing constituents in green tea that supports feelings of relaxation without drowsiness. What are the key benefits of Vitacost® L-Theanine? Promotes feelings of calmness Nurtures greater mental focus Supports healthy brain function Supports brain cell resistance to oxidative stress and is neuroprotective Maintains healthy blood pressure already within normal limits

Customer reviews

5.0
verified purchase
Take this if you do on-line dating or going for a job interview!

I call L-Theanine my “chill pill.” A friend introduced me to it about five years ago and told me, “This will turn you into Prince Charming.” He nailed it! When I was doing online dating, I often had some anxiety before a first encounter. Taking L-Theanine beforehand helped take the edge off. I felt relaxed, present, and much more confident—and apparently, I came across that way, too. I became quieter, more attentive, and genuinely curious about the woman sitting across from me. Eye contact felt natural. I wasn’t worrying about what to say next or wondering how I was being perceived. I was simply enjoying the conversation and getting to know her. And when a guy is relaxed, attentive, and actually listening, it turns out women notice. Truthfully, I’m not an expert on exactly how L-Theanine works. I just know what it did for me. Before a first date or an important job interview, that calm, focused feeling can make a remarkable difference. My advice is to try it on a day when you don’t have an important event and see how you personally respond. I’ve taken one capsule and I’ve taken two; for me, one was often enough. Don’t assume more is better, and follow the dosage instructions on the product you’re using. One other thing: I never mixed it with alcohol or stimulants. If you take prescription medications, check with your doctor or pharmacist before combining them with L-Theanine. And let me put it this way: I don’t want to brag, but when I was single, my success rate went through the roof. Prince Charming may be a slight exaggeration—but not by much.

8/17/2026
5.0
verified purchase

L-Theanine is a natural amino acid mainly found in green tea leaves and certain mushrooms. It's very popular in the health and wellness field, most notably for its ability to do something remarkable: relax you while keeping you alert and preventing drowsiness. Here are four of the most scientifically proven benefits of L-theanine for the human body: 1. Relieving Stress and Anxiety: L-theanine can easily cross the blood-brain barrier, promoting the release of alpha waves in the brain. When the brain releases alpha waves, the body is in a state of "awake but relaxed" (similar to meditation or the feeling after a hot bath), effectively reducing the stress hormone (cortisol) and relieving tension. 2. Enhancing Focus and Work Efficiency (Especially when Combined with Caffeine): Many people experience palpitations, tremors, or excessive excitement after drinking coffee (commonly known as "coffee jitters"). Combining L-theanine with caffeine neutralizes the anxiety and stimulation caused by caffeine while retaining its stimulating effect. This "two-pronged approach" has been proven to significantly improve focus, reaction speed, and memory. 3. Improved Sleep Quality: While it doesn't induce intense sleepiness like sleeping pills, it calms a chaotic and anxious mind by regulating neurotransmitters in the brain (promoting GABA and dopamine secretion), helping you fall asleep more easily and prolonging deep sleep, leaving you feeling refreshed the next day. 4. Neuroprotection and Antioxidant Effects: L-Theanine has antioxidant and nerve cell-protective effects. Studies indicate that it helps inhibit the toxicity caused by excessive glutamate excitation in the brain, and in the long term, it has a positive effect on maintaining cognitive function and delaying brain aging.

7/2/2026
5.0
verified purchase
Effective

Not all L-Theanines are made the same. This one really works for me. I (just) feel 'better', perhaps even calmer in comparison to other brands... which when I take , I hope they're effective

8/17/2026
3.0
verified purchase
Maybe work, maybe not

I have been taking it for a few weeks, and to be honest, I didn't feel any change at all. Maybe it is doing what it is supposed to do, but I can't tell.

7/30/2026
5.0
verified purchase

The amino acid l-theanine, along with calcium and phosphorus, works well for the nervous system, calms, and is of good quality.

7/15/2026
5.0
verified purchase
Good

I take it in the mornings to help me concentrate, so far had no issues

9/16/2026
5.0
verified purchase

I’ve bought several bottles of this because I’m happy with it. It’s a good product at a good price.

9/11/2026
5.0
verified purchase
Sleep component

This is one of many supplements I use at night for sleep. It’s working well in combination

8/28/2026
5.0
verified purchase

Vitacost, L-Theanine With Calcium and Phosphorus is of good value. Ingredients are working . Tablet size and taste is okay. Use occasionally when required to keep calm and relaxed.

8/24/2026
5.0
verified purchase
Awesome

Great price, great product, great store, I herb is the best always. Cant beat them anywhere!

8/12/2026