Page 1 - Reviews - Doctor's Best, Fully Active B Complex, 60 Veg Caps - iHerb
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Customer Ratings & Reviews

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4.7
Based on 22,791 ratings
18,341
3,023
1,026
200
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English (UK)
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Tbeaton23
Silver
Posted on Jan 8, 2026
United States
179
1
0
61
B-Complex For Gym
Verified Purchase
Doctors best is a great company once again with a solid product, this will give you energy and help with mood. I take it pre workout sometimes and it helps with energy. There is no niacin flush and the size of the pills are not large. Great packaging by doctors best again.
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iHerb Customer
Silver
Posted on Sep 27, 2025
United States
140
18
0
3
Great
Verified Purchase
This B vitamin supplement contains bioavailable ingredients designed for improved absorption. One noticeable effect is the bright yellow color in urine, which is commonly associated with taking B vitamins orally. The capsule size is convenient and easy to swallow. I’m continuing to take it to assess its long-term benefits.
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HibaSider
Gold
Posted on Aug 29, 2025
Jordan
697
2
0
35
Distinguished
Verified Purchase
One of the best B-complex supplements, relatively cheap... but always good... the quality is excellent, the size is suitable, the effectiveness is excellent, the quantity is good, the taste is delicious, it is easy to use, I will never do without it, I will repeat buying it in the future, repeat buying for sure
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Yury
Posted on Aug 29, 2025
Czech Republic
71
0
0
54
Energy and support for the nervous system
Verified Purchase
Doctor's Best B Complex with Quatrefolic is a great formula to support energy, metabolism, and nervous system health. The capsules are easy to digest, the composition is active and pure, without unnecessary additives. After a course of treatment, there is noticeably more energy, improved concentration, and overall well-being. An excellent choice for those who want to maintain energy and health on a daily basis.
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Zhun
Gold
Posted on Aug 18, 2025
Ukraine
729
243
0
227
Super!
Verified Purchase
Using a B vitamin complex ensures the health and well-being of the body. It improves cell metabolism, brain function and overall energy of the body. I recommend it.
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OPluke11
Posted on Jun 24, 2025
Taiwan
14
7
0
9
The repurchase proves it's effective! My daily state and spirit have improved!
Verified Purchase
This is my second time repurchasing Doctor's Best Fully Active B Complex. After my first use, the most noticeable feeling was a much better daily energy level and less fatigue. I was particularly surprised by the fact that the occasional headache I used to experience upon waking up has virtually disappeared since using it. The ingredients and effectiveness of this B complex give me great confidence, and I would recommend it to anyone looking to fundamentally improve their daily routine and boost their energy and spirit.
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ilikefood
Posted on Dec 4, 2025
Korea, Republic of
45
27
0
65
Verified Purchase
Quality: High-quality, bioactive B-complex designed for energy and cellular support. Size: Easy-to-swallow standard-size capsules. Dosage: Once daily. Benefit: Supports energy production, metabolism, and overall cellular health. Package: Easy-open bottle with secure packaging. Taste: No smell or taste. Other Aspects: I tend to be low on energy and needed a dependable boost. I had run out of my previous B-complex and decided to try Doctor’s Best. The dosage is convenient, and the price is reasonable for the amount you get. I would definitely repurchase because it performs well and is easy to incorporate into my daily routine.
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iHerb Customer
Posted on Nov 30, 2025
Latvia
43
31
1
2
B complex
Verified Purchase
Great quality ingredients with acceptable potency. It contains all B group vitamins including folic acid and others. Package of this size should improve one’s energy level and have a great effect on metabolism and nervous system function. I would suggest this supplement, should have the desired effect. No taste as it comes in pills.
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iHerbCustomer
Silver
Posted on Dec 2, 2025
Italy
201
0
5
39
B COMPLEX
Verified Purchase
Dr. Best is an excellent brand. This supplement has all 8 essential forms of vitamin B in excellent doses and bioavailable forms that increase absorption. I will repurchase.
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sunkissedlass
Gold
Posted on Nov 26, 2025
Qatar
404
2
0
11
Great
Verified Purchase
Iherb is my go to in buying trusted brands. The quality and quantity of this product is great for me. Extremely happy with my purchase. Prompt with delivery also.
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