Page 2 - Reviews - KAL, Deep Thought™, 60 Tablets - iHerb
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Customer Ratings & Reviews

100% authenticOur products are sourced directly from brands or authorized distributors.Show more
4.6
Based on 37 ratings
23
12
2
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What customers say
(36)
 
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English
Translated reviews
iHerb customer
Posted on Oct 24, 2025
Ukraine
77
40
2
5
Good
Verified purchase
KAL products are always at the top of my list due to the quality of their ingredients and the supposed effectiveness of their combination. Specifically, regarding this product for improving memory and cognitive function, I can say that after two weeks of use, I only feel a calming and toning effect, similar to the effect of the same brand's supplement, Stress B, which is already quite good.
Auto-translated from Russian
0217ab05-6bce-4af3-9246-436c852cdfa9
77cc5cec-b674-4f97-984b-e77d74cf6201
iHerb customer
Silver
Posted on Nov 1, 2025
Ukraine
230
0
0
18
Verified purchase
A great complex for brain activity and concentration! 💡 I started taking Deep Thought during a stressful period at work, when I had to remember a lot and think quickly. After a week, I noticed that I could concentrate more easily, my memory and clarity of thoughts improved. It contains hypericin, DMAE, L-glutamine and other nutrients that really support the brain. The tablets are medium-sized, easy to swallow, and do not have an unpleasant aftertaste.
Auto-translated from Ukrainian
iHerbCustomer
Posted on Aug 18, 2025
Japan
61
0
0
39
Well-balanced
Verified purchase
It is quite difficult to cover all of the nutrients contained in this product, such as phosphatidylserine and ginkgo biloba, with just one ingredient, but since we believe that ingesting nutrients for the brain is (even more important than other nutrients), it is great that you can replenish your brain with just two tablets.
Auto-translated from Japanese
David
Posted on Oct 29, 2024
Japan
99
3
9
23
wonderful
Verified purchase
I feel like my concentration has improved. I would like to repeat this course again.
Auto-translated from Japanese
iHerb customer
Gold
Posted on Oct 30, 2025
United States
329
9
0
84
Excellent!
Verified purchase
A great vitamin complex for supporting the nervous system. I noticed that a week after taking it, I had more energy and found it easier to focus.
Auto-translated from Russian
iHerb customer
Gold
Posted on Dec 17, 2024
United States
1,171
182
27
400
the quality is amazing.
Verified purchase
I have a daughter, a student, she needs support, mental and vitamin. Herbal taste. The company is good, the composition is too. I trust it. I change it periodically. It is good for the brain, relieves stress.
Auto-translated from Russian
Iherbjordan
Gold
Posted on Jul 24, 2024
Jordan
719
3
13
175
Verified purchase
To think deeply and clearly and maintain awareness, so far we have not seen any results
Auto-translated from Arabic
iHerb customer
Gold
Posted on Oct 23, 2025
Moldova, Republic of
377
77
0
24
Good
Verified purchase
I ordered this for a colleague at work based on the reviews on the website. It's a good value for money. I'll be ordering again today. I'm very happy.
Auto-translated from Russian
iHerb customer
Silver
Posted on Oct 10, 2025
Ukraine
253
0
0
9
Verified purchase
I've been taking KAL Deep Thought™ for a few weeks now - I'm very satisfied! My concentration and memory have noticeably improved, it's easier to focus on tasks, and my overall well-being and energy have become more stable.
Auto-translated from Ukrainian
hades
Gold
Posted on Dec 3, 2020
1,882
538
4
3,091
The ingredients are really good
Verified purchase
I ate all this nutritional supplement today. The ingredients were good, so I bought them after looking at the ingredients. I hope to sell it again.
Auto-translated from Korean