Page 1 - Reviews - Twinlab, Stress B-Complex Caps, 250 Capsules - iHerb

Customer Ratings & Reviews

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4.7
Based on 437 ratings
333
74
20
6
4
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What customers say
Customers appreciate this supplement for its effectiveness in managing stress, improving sleep, and supporting overall well-being. Many users find it beneficial for specific health conditions like fibromyalgia and diabetes, noting that it does not interfere with other medications such as Guaifenesen. The product is praised for being tasteless, odorless, and having good quality ingredients. However, some customers were concerned about the large capsule size and the use of gelatin without clear indication of its source, making it potentially unsuitable for vegetarians or vegans. Long-term users report consistent benefits in energy levels and mood enhancement. The inclusion of Vitamin C alongside B vitamins is also highlighted as a convenient feature.
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iHerb customer
Posted on Jul 21, 2025
Hong Kong
10
0
2
2
Twinlab stress b-complex
Verified purchase
I took this for few years n it’s good for lower the pressure on work, only it’s easy to change the colour if u take it out for long! I can hv good sleep in the night time!
iHerb customer
Posted on Sep 24, 2024
United States
54
0
2
8
Great B Complex
Verified purchase
I have found Twinlab B vitamin supplements to be in superior forms of B vitamins that Twin Labs has used since long back ago. At least I experience a much better outcome using them than what others use for their formulations to get the benefits that are known using B vitamins it contains to be accepted With my present bottles, I don't seem to pick up the smell. Long ago, it was explained by the manufacturer to me that the special form of some of the B complex is special and sometimes will do that. I just can't do without this special B-Complex being the TwinLab ingredients.
NutritionCoach
Gold
Posted on Jul 12, 2024
Japan
346
0
2
104
A Really Effective Supplement for B Deficiency
Verified purchase
Twinlab Stress B-Complex Caps have been a great addition to my supplement routine. They've helped address my vitamin B deficiency. Stress is known to affect vitamin B levels, so this supplement is good insurance. One of the best parts is that there is no niacin flush, which I've experienced with other B-complex supplements. The quality ingredients make me feel confident in what I'm taking. TwinLab makes quality stuff.
iHerb customer
Posted on Feb 23, 2026
Singapore
29
0
0
1
First time purchasing
Verified purchase
Trying out this first time as I understand the benefits of this supplement. Bought based on the good reviews and the quality ingredients. However, it didn't work for me as I didn't feel much effect. The packaging, size and taste are acceptable. I will consider this product again for my future purchase.
iHerb customer
Posted on Apr 12, 2026
Bulgaria
19
16
0
0
Effective B-Complex Supplement
Verified purchase
Overall, this is a good, reliable B-complex supplement that gets the job done. However, a fair warning: it smells really bad when you open the bottle. Also, as is typical with high-dose B-vitamins, expect your urine to turn a bright neon yellow or green. If you can get past the harsh odor, it is a worthwhile purchase for the price.
iHerb customer
Silver
Posted on Mar 28, 2026
Singapore
240
3
0
12
B- complex
Verified purchase
A good source of energy. A must for me to take when I go for my exercise. It gives me all the energy I need. Especially those who have low metabolism it gives energy.
iHerb customer
Posted on Nov 8, 2025
Croatia
16
0
0
0
really good product
Verified purchase
quality is good, it does the job and more if you feel stressed, take two of them
iHerb customer
Posted on May 25, 2025
Taiwan
19
1
0
0
Прекрасно!
Verified purchase
Thank you very much for this product, it suited me, I like the packaging, comfortable and stylish, I will order more of these products, and recommend them to all my friends and relatives! good!!
iHerb customer
Posted on Mar 25, 2025
United States
2
0
0
0
Verified purchase
The site was easy to navigate and the order came to me quite quickly. It was very carefully packaged. I would definitely order from this vendor once again.
iHerb customer
Posted on Mar 22, 2025
Croatia
24
0
1
0
Love it
Verified purchase
I adore this one because it is the first B vitamins that doesn’t affect my hunger. Great packaging, capsule isn’t too big, good taste.