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Highlights

BETA

This feature is in BETA, meaning the algorithms used to provide these results are constantly improving. These results might change.

Quality


After trying other l-theanine supplements, this is a quality product that has scientific research to back up the product benefits/claims.

Positive Review

Great quality and well worth the investment!

Positive Review

Cheapest source of quality theanine on here.

Neutral Review

I'm not sure if it's the added inositol or that its a better quality?

Neutral Review

Competitiveness


Faster acting than other brands with suntheanine and for some reason more effective.

Positive Review

It helps me focus, destress, sleep better.

Positive Review

Love doctor's best, it works very well and is a lot cheaper than the actual suntheanine brand.

Neutral Review

I'm not sure if it is necessary to purchase suntheanine containing products specifically, and may just go with regular l-theani...  Read More

Neutral Review
Overview
  • How are reviewers describing this item?
    great, best, quality, calm and good.
  • Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
  • Our engine has determined that the review content quality is high and informative.
  • Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 9.
  • Our engine has discovered that over 80% high quality reviews are present.
  • This product had a total of 1,457 reviews as of our last analysis date on Jul 30 2021.
Details

BETA

This feature is in BETA, meaning the algorithms used to provide these results are constantly improving. These results might change.

Most positive reviewquestion

I really like this line of vitamins! I think they are superior after a lot of research

Most authentic reviewquestion

Great brand of Theanine! Love doctor's best, it works very well and is a lot cheaper than the actual suntheanine brand.L-Theani...  Read More


Helpful Insights

BETA

This feature is in BETA, meaning the algorithms used to provide these results are constantly improving. These results might change.

    Posted by a reviewer on Amazon

    I would have to drive 10 miles to the rainbow store to get it.


    Posted by a reviewer on Amazon

    When i started on adderall for add i felt like it was not doing what it was supposed to do and instead just making me anxious and on edge.


    Posted by a reviewer on Amazon

    If i don't follow the directions and take it on an empty stomach then it does not seem to work as well if at all.


    Posted by a reviewer on Amazon

    What he failed to take into account is that suntheanine is 10 times more potent/concentrated than regular l-theanine.


    Posted by a reviewer on Amazon

    Even without fda approval 😊 the bottle is terrible.


    Posted by a reviewer on Amazon

    I've ordered at least three times, within a week each bottle cap came off.


    Posted by a reviewer on Amazon

    The opening and closing plastic hinge is terrible.


    Posted by a reviewer on Amazon

    Unscrupulous pill-packers like pure encapsulations buy the same suntheanine brand l-theanine by the rail car load then prey on unwell people by inferring that they pack a special grade of pure inside.

Review Count History
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