Page 1 - Reviews - Source Naturals, Zembrin®, 30 Tablets - iHerb
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Customer Ratings & Reviews

100% authenticOur products are sourced directly from brands or authorised distributors.Show more
4.3
Based on 103 ratings
65
20
8
4
6
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What customers say
Customer reviews (17)
Product reviews solely reflect the views and opinions expressed by the contributors and not those of iHerb. iHerb does not verify or endorse any claims made in these reviews. Statements regarding food supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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English (UK)
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Reviews from United States
Reviewer's country
English (UK)
Translated reviews
Thyme2heal
Posted on Jul 2, 2026
United States
11
0
1
0
Verified Purchase
I am use to using St John’s wort and im not finding the same effects with this zembrin but i had to take a break off St. John’s wort for the summer months because of more time spent in the sun. Hoping i just need more time on the zembrin to be a good substitute for SJW in the summer months.
Auto-translated from English
iHerb Customer
Posted on Mar 14, 2026
Canada
69
0
0
48
Calm focus
Verified Purchase
Very decent quality ingredients, dosage is one pill, no taste really. They are small in size circular tablets. The benefits to focus and calm are subtle but can definitely be felt. This Zembrin seems to be the best of all the ones available and we will be buying it again.
Auto-translated from English
Baella
Posted on Apr 17, 2026
Norway
62
0
0
47
Good for reducing everyday stress
Verified Purchase
This is good for reducing some of the everyday stress. It doesn't take away every bad thought you may have, but gives a little bit of calm that makes everything much easier to handle.
Auto-translated from English
iHerb Customer
Posted on Oct 29, 2025
Japan
10
0
0
7
Verified Purchase
I don't think the quality itself is bad, but I took one bottle every day and didn't notice any effect. I'm not the type of person who has a constitution where supplements don't have much effect on me, so I guess that's just how it is.
Auto-translated from Japanese
iHerb Customer
Posted on Jun 25, 2026
Poland
2
0
0
0
Don't expect a miracle
Verified Purchase
I'm noticing very slight effects, it makes me feel a little less stressed, it's easier for me to relax. These are very subtle changes.
Auto-translated from English
SPO
Silver
Posted on Mar 30, 2026
Germany
153
0
0
12
Whenever...
Verified Purchase
...when things get stressful, I swear by Kanna, or more specifically, the extract Zembrin. It calms you down without making you tired.
Auto-translated from German
iHerb Customer
Posted on May 24, 2026
Brazil
1
0
0
0
I'm satisfied with the result!!
Verified Purchase
I felt much better after using the medication. It improved my anxiety!
Auto-translated from Portuguese
iHerb Customer
Posted on Apr 9, 2026
Brazil
58
0
0
0
Okay, great, thank you then. Delicious, interesting, complementary, international, I share competence.
Verified Purchase
Okay, great, thank you then. Delicious, interesting, complementary, international, I share competence.
Auto-translated from Portuguese
Ahmed
Silver
Posted on Jan 26, 2026
117
0
0
12
Verified Purchase
Zembrin help enhancing mood by increasing serotonin levels. just stick to the recommended dosage for best benefit
Auto-translated from English
iHerb Customer
Silver
Posted on Jan 24, 2026
Ukraine
256
0
0
0
Verified Purchase
Excellent quality for the money, try to buy it on sale, then the price is absolutely amazing
Auto-translated from Russian