' 
SCIENTIFIC SCORE
Possibly Effective
Based on 24 Researches
7.8
USERS' SCORE
Good
Based on 94 Reviews
8.5
Supplement Facts
Serving Size: 1 Veg Capsule
Amount Per Serving
%DV
L-Theanine
100 mg
**
Decaffeinated Green Tea (Camellia sinensis) (Leaf)
250 mg
**
Top Medical Research Studies
9
L-theanine supports mental health
Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
Study shows significant benefits
This study evaluated the impact of four weeks of L-theanine on stress and cognitive function in 30 healthy adults. Participants received either 200 mg of L-theanine or a placebo in a double-blind setup. We observed significant reductions in anxiety and stress symptoms, as indicated by improved scores on various measures, including sleep quality. Additionally, cognitive functions, such as verbal fluency, showed notable enhancement after L-theanine use. These findings suggest that L-theanine may be beneficial for managing stress-related issues and boosting mental performance.
Read More
9
Green tea mitigates BPA anxiety
Green Tea Diet Can Effectively Antagonize the Toxicity Induced by Environmental-Related Concentrations of BPA: An Implication from and Studies.
Directly addresses BPA anxiety
We set out to explore how green tea affects anxiety, particularly in the context of exposure to bisphenol A (BPA), a chemical known for its neurotoxic effects. To conduct this investigation, mice were exposed to different concentrations of BPA and given complimentary green tea starting at a specific developmental stage.
After the treatment period, we observed the mice’s behavior through various tests designed to measure anxiety levels and memory capabilities. Strikingly, the results revealed that the green tea diet significantly reduced anxiety-like behaviors that had been triggered by BPA.
On a deeper level, we uncovered that green tea helped to reverse harmful changes in the brain, including the activation of microglia, which are immune cells in the brain often linked to neuroinflammation. The green tea diet also appeared to suppress several markers of neuroinflammation associated with BPA exposure.
Ultimately, our findings suggest that incorporating green tea into one’s diet may be a simple yet effective approach to mitigating anxiety disorders linked to environmental toxins like BPA. This study highlights the potential of natural remedies in combating modern-day chemical exposures.
After the treatment period, we observed the mice’s behavior through various tests designed to measure anxiety levels and memory capabilities. Strikingly, the results revealed that the green tea diet significantly reduced anxiety-like behaviors that had been triggered by BPA.
On a deeper level, we uncovered that green tea helped to reverse harmful changes in the brain, including the activation of microglia, which are immune cells in the brain often linked to neuroinflammation. The green tea diet also appeared to suppress several markers of neuroinflammation associated with BPA exposure.
Ultimately, our findings suggest that incorporating green tea into one’s diet may be a simple yet effective approach to mitigating anxiety disorders linked to environmental toxins like BPA. This study highlights the potential of natural remedies in combating modern-day chemical exposures.
Read More
9
Green tea nanoparticles ease anxiety
Green Tea Polyphenol Nanoparticles Reduce Anxiety Caused by Tobacco Smoking Withdrawal in Rats by Suppressing Neuroinflammation.
Highly relevant study findings
In our study, we aimed to understand how green tea, specifically its antioxidant-rich nanoparticles, might influence anxiety related to withdrawal from tobacco smoking. We conducted our experiment on rats that were exposed to tobacco smoke daily for several weeks. This exposure was known to induce anxiety-like behavior as part of the withdrawal process.
After 20 days of exposure, we administered green tea nanoparticles to half of the rats to see if this treatment could alleviate their anxiety levels. Our findings were promising; the rats that received the green tea nanoparticles showed reduced signs of anxiety compared to those that didn’t receive any treatment. We measured various factors in the rats’ brains, including markers of neuroinflammation and neuroplasticity, and found that the nanoparticles helped to regulate these responses.
Overall, this study suggests that green tea nanoparticles could play a protective role in managing tobacco withdrawal symptoms, particularly anxiety. We may have found a natural option to help ease the turmoil of quitting smoking.
After 20 days of exposure, we administered green tea nanoparticles to half of the rats to see if this treatment could alleviate their anxiety levels. Our findings were promising; the rats that received the green tea nanoparticles showed reduced signs of anxiety compared to those that didn’t receive any treatment. We measured various factors in the rats’ brains, including markers of neuroinflammation and neuroplasticity, and found that the nanoparticles helped to regulate these responses.
Overall, this study suggests that green tea nanoparticles could play a protective role in managing tobacco withdrawal symptoms, particularly anxiety. We may have found a natural option to help ease the turmoil of quitting smoking.
Read More
Most Useful Reviews
9.5
Life saver
This has been transformative for my generalized anxiety and panic attacks. I was hesitant to take prescription meds, but I started with two 100 mg of L-theanine in the morning and one in the evening. It has remarkably improved my calmness, focus, and clarity. It’s worth trying if you struggle with anxiety.
Read More
9.5
Significant improvement
Definitely helps my ongoing anxiety! I conducted an experiment by taking this for a few weeks, then stopping for a week. The difference was remarkable! I ordinarily take anti-anxiety medication intermittently (as needed), and I haven’t required it since starting L-Theanine. I prefer this product as it has no side effects.
Read More
9.5
Tremendous relief
I'm so glad I found this product! I've been using NOW Foods L-Theanine for a few weeks now and I'm really impressed with the results. As a very anxious person, this product has helped me tremendously. I feel less stressed and my mind is clearer. I would highly recommend this product to anyone struggling with anxiety or stress.
Read More
Medical Researches
SCIENTIFIC SCORE
Possibly Effective
Based on 24 Researches
7.8
- All Researches
9
l-Theanine shows promise against THC
l-Theanine Prevents Long-Term Affective and Cognitive Side Effects of Adolescent Δ-9-Tetrahydrocannabinol Exposure and Blocks Associated Molecular and Neuronal Abnormalities in the Mesocorticolimbic Circuitry.
High relevance for neuroprotective research
We investigated the effects of l-theanine, an amino acid found in green tea, on the negative side effects of adolescent THC exposure. Our research used a preclinical model with male rats to see if l-theanine could prevent long-term behavioral and cognitive issues linked to THC exposure.
Findings showed that l-theanine effectively blocked these adverse effects, protecting brain function and regulating important neurotransmitter pathways. As cannabis use grows among adolescents, our study highlights l-theanine's potential as a protective treatment to minimize THC-induced risks.
Findings showed that l-theanine effectively blocked these adverse effects, protecting brain function and regulating important neurotransmitter pathways. As cannabis use grows among adolescents, our study highlights l-theanine's potential as a protective treatment to minimize THC-induced risks.
Read More
9
Amino acids improve mood disorders
Innovative therapies for mood disorders: A case report.
Promising nutritional intervention results
We examined the role of targeted amino acid therapy, including l-theanine, in addressing mood disorders like anxiety and depression. Our case study focused on a 26-year-old woman with complex mental health challenges who, after struggling with conventional treatments, engaged in a personalized nutrition intervention. Over 12 weeks, she followed a tailored program that emphasized amino acids and specific nutrients.
The results were promising, showing significant improvement in her anxiety, depression, and other related symptoms. This suggests that integrating nutritional therapies may offer new hope for those affected by mood disorders.
The results were promising, showing significant improvement in her anxiety, depression, and other related symptoms. This suggests that integrating nutritional therapies may offer new hope for those affected by mood disorders.
Read More
9
L-theanine supports mental health
Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
Study shows significant benefits
This study evaluated the impact of four weeks of L-theanine on stress and cognitive function in 30 healthy adults. Participants received either 200 mg of L-theanine or a placebo in a double-blind setup. We observed significant reductions in anxiety and stress symptoms, as indicated by improved scores on various measures, including sleep quality. Additionally, cognitive functions, such as verbal fluency, showed notable enhancement after L-theanine use. These findings suggest that L-theanine may be beneficial for managing stress-related issues and boosting mental performance.
Read More
9
Green tea mitigates BPA anxiety
Green Tea Diet Can Effectively Antagonize the Toxicity Induced by Environmental-Related Concentrations of BPA: An Implication from and Studies.
Directly addresses BPA anxiety
We set out to explore how green tea affects anxiety, particularly in the context of exposure to bisphenol A (BPA), a chemical known for its neurotoxic effects. To conduct this investigation, mice were exposed to different concentrations of BPA and given complimentary green tea starting at a specific developmental stage.
After the treatment period, we observed the mice’s behavior through various tests designed to measure anxiety levels and memory capabilities. Strikingly, the results revealed that the green tea diet significantly reduced anxiety-like behaviors that had been triggered by BPA.
On a deeper level, we uncovered that green tea helped to reverse harmful changes in the brain, including the activation of microglia, which are immune cells in the brain often linked to neuroinflammation. The green tea diet also appeared to suppress several markers of neuroinflammation associated with BPA exposure.
Ultimately, our findings suggest that incorporating green tea into one’s diet may be a simple yet effective approach to mitigating anxiety disorders linked to environmental toxins like BPA. This study highlights the potential of natural remedies in combating modern-day chemical exposures.
After the treatment period, we observed the mice’s behavior through various tests designed to measure anxiety levels and memory capabilities. Strikingly, the results revealed that the green tea diet significantly reduced anxiety-like behaviors that had been triggered by BPA.
On a deeper level, we uncovered that green tea helped to reverse harmful changes in the brain, including the activation of microglia, which are immune cells in the brain often linked to neuroinflammation. The green tea diet also appeared to suppress several markers of neuroinflammation associated with BPA exposure.
Ultimately, our findings suggest that incorporating green tea into one’s diet may be a simple yet effective approach to mitigating anxiety disorders linked to environmental toxins like BPA. This study highlights the potential of natural remedies in combating modern-day chemical exposures.
Read More
9
Green tea nanoparticles ease anxiety
Green Tea Polyphenol Nanoparticles Reduce Anxiety Caused by Tobacco Smoking Withdrawal in Rats by Suppressing Neuroinflammation.
Highly relevant study findings
In our study, we aimed to understand how green tea, specifically its antioxidant-rich nanoparticles, might influence anxiety related to withdrawal from tobacco smoking. We conducted our experiment on rats that were exposed to tobacco smoke daily for several weeks. This exposure was known to induce anxiety-like behavior as part of the withdrawal process.
After 20 days of exposure, we administered green tea nanoparticles to half of the rats to see if this treatment could alleviate their anxiety levels. Our findings were promising; the rats that received the green tea nanoparticles showed reduced signs of anxiety compared to those that didn’t receive any treatment. We measured various factors in the rats’ brains, including markers of neuroinflammation and neuroplasticity, and found that the nanoparticles helped to regulate these responses.
Overall, this study suggests that green tea nanoparticles could play a protective role in managing tobacco withdrawal symptoms, particularly anxiety. We may have found a natural option to help ease the turmoil of quitting smoking.
After 20 days of exposure, we administered green tea nanoparticles to half of the rats to see if this treatment could alleviate their anxiety levels. Our findings were promising; the rats that received the green tea nanoparticles showed reduced signs of anxiety compared to those that didn’t receive any treatment. We measured various factors in the rats’ brains, including markers of neuroinflammation and neuroplasticity, and found that the nanoparticles helped to regulate these responses.
Overall, this study suggests that green tea nanoparticles could play a protective role in managing tobacco withdrawal symptoms, particularly anxiety. We may have found a natural option to help ease the turmoil of quitting smoking.
Read More
User Reviews
USERS' SCORE
Good
Based on 94 Reviews
8.5
- All Reviews
- Positive Reviews
- Negative Reviews
9.5
Life saver
This has been transformative for my generalized anxiety and panic attacks. I was hesitant to take prescription meds, but I started with two 100 mg of L-theanine in the morning and one in the evening. It has remarkably improved my calmness, focus, and clarity. It’s worth trying if you struggle with anxiety.
Read More
9.5
Significant improvement
Definitely helps my ongoing anxiety! I conducted an experiment by taking this for a few weeks, then stopping for a week. The difference was remarkable! I ordinarily take anti-anxiety medication intermittently (as needed), and I haven’t required it since starting L-Theanine. I prefer this product as it has no side effects.
Read More
9.5
Tremendous relief
I'm so glad I found this product! I've been using NOW Foods L-Theanine for a few weeks now and I'm really impressed with the results. As a very anxious person, this product has helped me tremendously. I feel less stressed and my mind is clearer. I would highly recommend this product to anyone struggling with anxiety or stress.
Read More
2.5
Negative side effects
Be careful - some negative side effects. I liked this product initially for its relaxing effect, but I experienced increased thoughts of violence and suicide. After stopping the product, I returned to normal. While it may help anxieties like anti-anxieties, I recommend stopping if you encounter these distressing symptoms.
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9.5
Calming effect
Perfect natural alternative to Rx meds. My doctor recommended L-theanine (100mg, twice daily) to help alleviate my anxiety after I expressed dissatisfaction with prescription medications. I've been taking it for a couple of weeks, and I no longer have a racing heart; instead, I feel calm and have not experienced any panic attacks. The capsules are easy to swallow, and I’ve had no negative side effects. I've already shared this product with family and friends.
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