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Top 8 Best Theanine Supplements

UpdatedFebruary 22, 2024

Theanine is a popular supplement that is known for its calming and relaxing effects. It is an amino acid that is commonly found in tea leaves and is known to promote relaxation without causing drowsiness. Theanine supplements are becoming increasingly popular due to their ability to reduce stress and anxiety, improve sleep quality, and enhance cognitive function.

When it comes to choosing the best theanine supplement, there are a few critical things that people should consider. One of the most important factors is the quality of the supplement. It is essential to choose a high-quality supplement that is made from pure theanine and does not contain any fillers or additives.

Another crucial factor to consider is the dosage. The recommended dosage of theanine varies depending on the individual's needs and the reason for taking it. It is essential to choose a supplement with a dosage that is appropriate for your needs.

We spent hours researching and testing various theanine supplements to identify the best ones on the market. In the following sections, we will share our findings and recommendations for the best theanine supplements available.

Top 3 Best Theanine Supplements

  1. Sports Research Double Strength L-Theanine Supplement
  2. NOW Supplements, L-Theanine 200 mg with Inositol, Stress Management*, 120 Veg Capsules 120 Count (Pack of 1)
  3. Jarrow Formulas Theanine 200 mg Supplement

We have researched and tested various theanine supplements to bring you our top picks. Theanine is an amino acid found in tea leaves and is known for its calming effects and ability to promote relaxation without causing drowsiness. Our list includes the best theanine supplements that are effective, safe, and affordable. Whether you are looking to reduce stress, improve focus, or enhance your sleep quality, we have got you covered. Check out our top picks below.

Sports Research Double Strength L-Theanine Supplement

The Editor's Choice
Elevate your focus and alertness with Sports Research Double Strength L-Theanine Supplement. It provides a caffeine alternative, promoting relaxation and focus without jitters. Made with organic ingredients, it's a natural choice. While not everyone may experience the desired effects, it's worth considering for improved productivity.


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We highly recommend the Sports Research Double Strength L-Theanine Supplement for those looking to replace their existing caffeine routine with something that supports relaxation, calm, focus, and alertness.

Pros

  • Encapsulated in a once-daily liquid softgel, our L-Theanine provides double the amount of L-theanine green tea extract commonly found in energy supplements in a convenient max-strength formula.
  • Formulated with patented and clinically researched Suntheanine, this supplement provides all of the alertness and relaxation without the jitters or crash of caffeine, energy pills, or energy drinks.
  • Our L-Theanine is crafted using 100% organic coconut oil and an entirely non-GMO verified, gluten-free and soy-free product.

Cons

  • Some users may not experience the desired effects.
  • May not be suitable for those with certain medical conditions or those taking certain medications.
  • The softgels may stick together in the bottle, making them difficult to separate.

We found that taking the Sports Research Double Strength L-Theanine Supplement helped us to feel more alert and focused without the jitters or crash of caffeine. The patented Suntheanine formula provided a sense of relaxation and calmness, which helped us to feel more productive throughout the day. Additionally, the fact that the supplement is made with high-quality, organic ingredients gave us peace of mind about what we were putting into our bodies. Overall, we believe that this is a great option for those looking for a natural way to support their focus and alertness.

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If you're looking for a natural way to relieve stress and promote relaxation, NOW Supplements, L-Theanine 200 mg with Inositol might be the right choice for you.

Pros

  • Promotes relaxation without causing drowsiness
  • Supports healthy cardiovascular function
  • Includes Inositol for brain and nervous system health

Cons

  • May melt or get damaged when exposed to heat or sunlight
  • Some users may not experience the desired effects
  • May cause side effects in some individuals

We've tried NOW Supplements, L-Theanine 200 mg with Inositol and found it to be an effective way to reduce stress and anxiety. Unlike other calming agents, it doesn't make us drowsy or cause any negative side effects. It's also great for supporting healthy cardiovascular function, which is an added bonus.

One thing to keep in mind is that the product may melt or get damaged when exposed to heat or sunlight, so it's important to be available during the delivery process. Additionally, some users may not experience the desired effects, and it may cause side effects in some individuals.

Despite these potential drawbacks, we think that NOW Supplements, L-Theanine 200 mg with Inositol is a great choice for anyone looking for a natural way to manage stress and improve their overall health. With its high L-theanine content and inclusion of Inositol, it's a powerful supplement that can help you feel more relaxed and focused throughout the day.

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We highly recommend Jarrow Formulas Theanine 200 mg Supplement for those looking for a dietary supplement that promotes relaxation.

Pros

  • Made with high-quality, non-GMO ingredients
  • Contains 200 mg of L-Theanine per serving
  • Supports relaxation without causing drowsiness

Cons

  • May not work as effectively for individuals with high caffeine tolerance
  • Some users may experience dizziness or headaches
  • Not intended to diagnose, treat, cure, or prevent any disease

We have personally used Jarrow Formulas Theanine 200 mg Supplement and found it to be effective in promoting relaxation without causing drowsiness. The supplement is made with high-quality, non-GMO ingredients and contains 200 mg of L-Theanine per serving.

One potential drawback of this supplement is that it may not work as effectively for individuals with high caffeine tolerance. Some users may also experience dizziness or headaches. It is important to note that this product is not intended to diagnose, treat, cure, or prevent any disease.

In summary, if you are looking for a dietary supplement that promotes relaxation and is made with high-quality ingredients, we highly recommend Jarrow Formulas Theanine 200 mg Supplement.

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We highly recommend purchasing the Horbäach L-Theanine Supplement for its high potency formula and expertly crafted ingredients.

Pros

  • Quick release capsules deliver 400 mg of L-Theanine per serving
  • Backed by commitment to purity and potency
  • Naturally free of gluten, wheat, yeast, lactose, soy, artificial color, artificial flavor, and non-GMO

Cons

  • May not have a noticeable impact for those with ADD or ADHD
  • Does not help with getting to sleep
  • Capsules are 200 mg each, not 400 mg as advertised

We found that the Horbäach L-Theanine Supplement provided a noticeable uplift in mood without making us feel tired. The supplement is also naturally free of many common allergens, making it a great option for those with dietary restrictions.

The quick release capsules make it easy to take on-the-go and the 400 mg per serving dosage provides a high potency formula. We appreciate Horbäach's commitment to purity and potency, ensuring that we are getting a quality product.

However, it is important to note that the supplement may not have a noticeable impact for those with ADD or ADHD and does not help with getting to sleep. Additionally, the capsules are 200 mg each, not 400 mg as advertised, which may be a disappointment for some customers.

Overall, we highly recommend the Horbäach L-Theanine Supplement for those looking for a high potency formula with expertly crafted ingredients.

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We highly recommend the Horbäach L-Theanine 400mg supplement for anyone looking for a high potency formula that delivers quick results.

Pros

  • The capsules are easy to swallow and quickly absorbed by the body.
  • The supplement is made with trusted ingredients and is laboratory tested for purity and potency.
  • The product is naturally free of gluten, wheat, yeast, lactose, soy, artificial color, artificial flavor, and non-GMO.

Cons

  • The dosage of 400mg may be too high for some users.
  • Some users may experience mild side effects, such as headaches or dizziness.
  • The supplement may not work for everyone and may take some time to see results.

We have personally used the Horbäach L-Theanine 400mg supplement and have found it to be effective in promoting relaxation and reducing stress. The high potency formula delivers quick results and the capsules are easy to swallow.

The supplement is expertly crafted with trusted ingredients and laboratory tested for purity and potency. We appreciate that it is naturally free of gluten, wheat, yeast, lactose, soy, artificial color, artificial flavor, and non-GMO.

However, we do caution that the dosage of 400mg may be too high for some users and may cause mild side effects, such as headaches or dizziness. Additionally, the supplement may not work for everyone and may take some time to see results.

Overall, we believe that the Horbäach L-Theanine 400mg supplement is a great option for anyone looking for a high potency formula that delivers quick results and is made with trusted ingredients.

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We highly recommend Jarrow Formulas Regular Strength Theanine 100 mg as a dietary supplement to promote relaxation.

Pros

  • Contains 100 mg of L-Theanine per serving, a neurologically active amino acid that supports relaxation.
  • Made with high-quality, non-GMO ingredients.
  • Vegan and gluten-free dietary supplement.

Cons

  • May not be suitable for people who are looking for a supplement that promotes sleep.
  • Some users may not experience significant relaxation effects.
  • A bit pricey compared to other theanine supplements.

We found that Jarrow Formulas Regular Strength Theanine 100 mg is effective in promoting relaxation without causing drowsiness. It is perfect for people who are looking for a dietary supplement that promotes relaxation.

The suggested use is to take one capsule once a day with water or juice on an empty stomach, or as directed by your qualified healthcare professional. We appreciate that this product is informed by strong scientific research, and it is carefully crafted to ensure you get the benefit of each and every vitamin, mineral, and supplement.

Overall, we think that Jarrow Formulas Regular Strength Theanine 100 mg is a great choice for people who are looking for a dietary supplement to promote relaxation. However, it may not be the best option for those who are looking for a supplement that promotes sleep.

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We highly recommend Integrative Therapeutics L-Theanine supplement for anyone looking to support a relaxed state and healthy stress response.

Pros

  • Supports relaxation without diminishing daytime alertness
  • Vegan, soy-free, and dairy-free
  • Trusted brand for over 35 years

Cons

  • May not be strong enough for some individuals
  • Not labeled correctly in some cases
  • May cause vivid dreams in some individuals

We have personally used Integrative Therapeutics L-Theanine supplement and have noticed an improvement in our overall stress levels and ability to relax. The supplement is vegan, soy-free, and dairy-free, making it a great option for individuals with dietary restrictions.

One of the standout benefits of this supplement is that it supports relaxation without diminishing daytime alertness, which is crucial for those who need to remain focused and productive throughout the day. Additionally, Integrative Therapeutics is a trusted brand with a reputation for quality and accuracy in their manufacturing processes.

However, some individuals may find that the supplement is not strong enough for their needs, and there have been cases where the product was not labeled correctly. Additionally, some users have reported experiencing vivid dreams while taking the supplement.

Overall, we highly recommend Integrative Therapeutics L-Theanine supplement for anyone looking to support a relaxed state and healthy stress response.

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If you're looking for a fast-acting stress relief supplement, Nature Made L-Theanine 200mg chewable tablets might be the product for you.

Pros

  • Works within 30 minutes to help relax the mind without causing drowsiness
  • Delicious tropical fruit flavor
  • 100% drug-free and suitable for vegetarians

Cons

  • May not be effective for everyone
  • Tablets may be too chewy for some
  • Some users may not like the taste

We recently tried Nature Made L-Theanine Chewable Tablets and found that they do help to reduce stress and promote relaxation. The tropical fruit flavor is a nice touch and makes it easy to take. We also appreciate that it's 100% drug-free and suitable for vegetarians.

However, we did notice that it may not be effective for everyone and the tablets may be too chewy for some. Additionally, some users may not like the taste.

Overall, if you're looking for a natural and fast-acting stress relief supplement, Nature Made L-Theanine Chewable Tablets might be worth a try.

Buying Guide

When looking for the best theanine supplement, there are a few factors to consider to ensure you are getting a high-quality product that meets your needs. Here are some features to look for when choosing a theanine supplement:

Dosage

The dosage of theanine in a supplement can vary, so it's important to choose a product that provides the right amount for your individual needs. The recommended dosage for theanine is typically between 100-400mg per day, but it's always best to consult with a healthcare professional before starting any new supplement regimen.

Form

Theanine can come in different forms, including capsules, tablets, and powders. Capsules and tablets are convenient for on-the-go use, while powders can be added to drinks or mixed with food. Choose the form that is most convenient for your lifestyle.

Purity

Look for a theanine supplement that is pure and free from any additives or fillers. Check the label for any additional ingredients and make sure they are safe and necessary for your needs.

Brand Reputation

Choose a reputable brand that has a good track record for producing high-quality supplements. Look for reviews and ratings from other customers to get an idea of the brand's reputation and the effectiveness of their products.

Price

Price can vary greatly for theanine supplements, so it's important to find a product that fits within your budget. However, don't sacrifice quality for a lower price. Look for a supplement that offers good value for your money and meets your needs.

In summary, when choosing a theanine supplement, consider the dosage, form, purity, brand reputation, and price to ensure you are getting a high-quality product that meets your needs.

Frequently Asked Questions

What is the most potent form of L-theanine?

The most potent form of L-theanine is the purest form, which is extracted from green tea leaves. L-theanine is a non-protein amino acid that is found almost exclusively in tea plants. Theanine supplements are commonly available in the form of capsules and tablets.

What is the best form of L-theanine?

The best form of L-theanine is a high-quality supplement that contains pure L-theanine extracted from green tea leaves. Look for supplements that are free from fillers, artificial colors, and flavors.

Which brand of L-theanine is the best?

There are many high-quality brands of L-theanine supplements on the market. Some of the most popular brands include Jarrow Formulas, NOW Foods, and Life Extension. It is important to choose a reputable brand that uses high-quality ingredients and follows good manufacturing practices.

Does brand of L-theanine matter?

Yes, the brand of L-theanine can make a difference in terms of quality and potency. It is important to choose a reputable brand that uses high-quality ingredients and follows good manufacturing practices.

How much L-theanine is in green tea?

Green tea contains about 5-8 mg of L-theanine per 100 mL of tea. However, the amount of L-theanine can vary depending on the type of green tea and how it is brewed.

Are there any side effects of L-theanine supplements?

L-theanine supplements are generally considered safe and well-tolerated. However, some people may experience mild side effects such as headaches, dizziness, and gastrointestinal upset. It is important to follow the recommended dosage and talk to your doctor before taking any new supplements.

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