Page 1 - Reviews - NOW Foods, Sustained Release B-100, 100 Tablets - iHerb
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Customer Ratings & Reviews

100% authenticOur products are sourced directly from brands or authorized distributors.Show more
4.7
Based on 3,893 ratings
3,105
543
178
45
22
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What customers say
Customers highly appreciate the NOW Foods Sustained Release B-100 Vitamin for its excellent quality, high potency ingredients, and effectiveness in boosting energy levels and supporting overall health. Many users have experienced increased energy, improved well-being, and better management of specific health issues like ulcers and numbness. The product is also praised for its easy-to-swallow tablets and trusted brand reputation. However, some customers reported issues with the tablets' durability in warmer climates, noting that they can soften, disintegrate, or develop an unpleasant smell over time. Packaging and delivery are generally well-received.
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iHerb customer
Posted on Feb 22, 2025
United Arab Emirates
11
0
0
2
Now B-100 Complex – A Game Changer for Energy and Well-being!
Verified purchase
I’ve been taking Now B-100 Complex for a few weeks, and I’m really happy with the results! This supplement has definitely helped with my energy levels and overall mental clarity. I feel more focused throughout the day and less fatigued. The capsules are easy to swallow, and I haven’t experienced any stomach discomfort, which I’ve had with other B-vitamin supplements. I’m impressed with the quality of Now products and will definitely continue using this one. Highly recommend it to anyone looking for a reliable B-complex supplement!
iHerb customer
Posted on Aug 23, 2025
United Arab Emirates
25
0
0
2
Verified purchase
Best and safe brand for this category of supplement. B100.
JessieJess
Silver
Posted on Oct 22, 2021
United States
298
121
5
176
Works great!
Verified purchase
Energy level is higher and mood seems better after a couple of weeks on this. It's a good value. It's a big tablet, so swallow it with any other tablet and it goes down easier. I am a repeat buyer of this product, and a firm believer in taking B-100 for better health.
e3c360a2-205f-486b-a1d6-063bd4d3e595
iHerb customer
Posted on Nov 26, 2025
Jordan
9
0
0
0
Verified purchase
I’ve been using this product for a while and I’m really happy with it. The quality is great, the packaging arrived in good condition, and the results are noticeable. It matches the description on iHerb and feels worth the price. I also like that it has a clean formula and is easy to use. Shipping was fast as always. Overall, a reliable product that I would definitely purchase again.
iHerb customer
Silver
Posted on Oct 17, 2025
Israel
179
0
1
9
GOOD
Verified purchase
I’ve been using NOW Foods Sustained Release B-100 for a few weeks, and it’s become one of my go-to B-complex supplements. The sustained-release formula is a real strength — instead of a quick spike, I get gentle, extended support throughout the day. That helps avoid energy crashes that I’ve experienced with many B-complexes.
iHerb customer
Gold
Posted on Oct 15, 2025
Ukraine
1,056
2
0
237
Verified purchase
Comparing with other products and ingredients that I used for months, I can feel is good quality and it worth to spend money and time to have this product from this brand . The package was good and I feel much better in my skin, heart function, brain function, also it taste good. Highly recommend it .
iHerb customer
Posted on Sep 24, 2025
United States
19
2
0
1
Verified purchase
Comparing with other products and ingredients that I used for months , I can feel is good quality and it worth to spend money and time to have this product from this brand . The package was good and I feel much better in my skin , heart function, brain function, also it taste good . Highly recommend it .
yosefyosefa
Gold
Posted on Sep 19, 2022
Israel
503
0
449
203
Verified purchase
quality ingredients perfect size has folic acid gives you energy medicine flush perfect package effects instantly hypotenuse helps the nervous system to become helps your metabolism to be normal no after taste advised for people who have a hectic life and are under pressure all the time to take one daily all along while you're going through hectic life
SUPER BEN
Posted on Dec 5, 2017
310
0
0
328
Best Quality & Value B-100 -> Read More..
Verified purchase
Top quality , trusted brand with best value, with benefits such as - Increase Energy and Improve Mood, Reduce Stress, Healthy Hair, Skin and Nails and many more.. as an athlete I take it first thing in the morning with a meal.. and I have energy all day long.. highly recommended! Hey, I've collected all the most interesting and useful information about the goods, For more useful quality reviews and more Equal benefits.. Just Enter my page ( SUPER BEN ) green link.
Maestro
Posted on May 21, 2026
Croatia
26
0
5
3
Now B 100 very good quality
Verified purchase
Don't be scared when your urine will have yellow colour...It’s normal "side effects " when you take B 100.