Page 1 - Reviews - NOW Foods, B-1, 100 mg, 100 Tablets - iHerb
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100% authenticOur products are sourced directly from brands or authorized distributors.Show more
4.8
Based on 13,995 ratings
11,895
1,442
490
99
69
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What customers say
Customers highly praise this Vitamin B1 supplement for its quality, effectiveness, and value. Many report significant improvements in energy levels, nervous system function, and overall well-being after consistent use. The product is also noted for helping with vivid nightmares and anxiety. Users appreciate the small pill size, making it easy to swallow, and commend the reasonable price and fast delivery. The supplement is described as essential for maintaining health, supporting metabolism, and even repelling mosquitoes. Overall, customers are very satisfied with the product's benefits and plan to repurchase.
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Customer reviews (13,854)
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 dietary 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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Reviews from Bangladesh
Reviewer Country
English
Translated reviews
ShahMohommod
Silver
Posted on Dec 15, 2024
Bangladesh
194
0
0
15
Verified purchase
NOW B-1, 100 mg, 100 Tablets is a standout dietary supplement for anyone looking to boost their energy levels and support overall wellness. As a high-quality source of thiamine (Vitamin B1), this product delivers essential benefits to your metabolism, nervous system, and cardiovascular health. Each tablet provides a potent 100 mg dose, making it easy to meet your daily requirements without any hassle. One of the key highlights is its ability to enhance energy production. Vitamin B1 plays a vital role in converting carbohydrates into fuel, which helps you stay energized throughout the day. For individuals experiencing fatigue or looking to optimize their physical and mental performance, this supplement can make a noticeable difference. The tablets are small, easy to swallow, and come in a generous 100-count bottle, offering excellent value for the price. True to NOW’s reputation, the product is manufactured under strict quality standards and is free of common allergens such as gluten, soy, and dairy, making it suitable for a variety of dietary needs. I also appreciate that this supplement is suitable for vegetarians, catering to a wide audience. Whether you're managing stress, supporting your heart health, or simply aiming for balanced nutrition, NOW B-1 is a reliable choice. After a few weeks of use, I’ve experienced improved focus, steady energy levels, and a greater sense of well-being. I highly recommend it to anyone looking for a trustworthy and effective Vitamin B1 supplement.
Ekaterina
Gold
Posted on Apr 3, 2026
Germany
344
0
1
38
energy
Verified purchase
Good quality vitamin with a convenient dosage. Tablets are easy to take and the bottle lasts a long time. Helps support energy, nervous system health and overall well-being.
Nicola-Elias
Gold
Posted on Mar 30, 2026
Israel
499
64
3
106
good
Verified purchase
nice because of the quality of it and the good benefit for our body.!! Good Job Iherb. fAST shipment. Door to door. Job well done. I need it right away. The quality of the ingredients is good! i like it because
JM
Silver
Posted on Mar 1, 2026
Philippines
263
0
0
16
good quality
Verified purchase
Easy to swallow though a bit sour to my taste. I don't have specific change to share but i noticed that i get fewer static exposure when touching metal objects. I read that this is because of B1 so it seems to be working.
Alice
Posted on May 10, 2025
Israel
30
28
0
33
Product: NOW Foods B-1, 100 mg – 100 Tablets
Verified purchase
This is a solid, no-frills B1 supplement that does exactly what it’s supposed to. The quality is consistent — I feel a clear difference in energy, focus, and nervous system calmness when I take it regularly, especially during times of stress or fatigue. The ingredient profile is clean and simple: just thiamine and minimal additives, which I appreciate. No unnecessary binders or coatings. The size is excellent value — 100 tablets last over three months if you're taking one per day, and the tablets are small and easy to swallow. Definitely a staple for anyone managing blood sugar, energy, or stress resilience.
8a9a658c-68bf-42ef-aadf-96a3a9dbea8d
iHerb customer
Silver
Posted on Nov 19, 2025
Georgia
142
0
0
8
Verified purchase
High-quality B-1 supplement! NOW Foods B-1 has excellent quality with clean ingredients. The taste is mild, and the size and dosage are convenient for daily use. With added folic acid, it supports energy, metabolism, and the nervous system without causing a niacin flush. Its high potency delivers noticeable benefits and overall positive effects.
iHerbCustomer
Posted on Nov 7, 2025
Georgia
33
0
1
24
Good Product
Verified purchase
This is another quality product form Now Foods I take it everyday for mental health but I take it 2 times per day by 25 because I devide 1 tablet into 4 pcs. Overall it is good product for Nervous System Metabolism and has good effect. Ingredient and size of the Tablet is good.
iHerb customer
Posted on Oct 23, 2025
Philippines
31
0
0
0
Verified purchase
I’ve been taking this Vitamin C supplement from iHerb for a few weeks now, and I’m really impressed with the quality. The potency feels just right — not too strong but effective enough to support daily needs. The size of the capsules is easy to swallow, and the dosage per serving makes it simple to follow without confusion. I’ve noticed real benefits for my immune system, and I appreciate the added antioxidants, which give an extra boost for overall wellness. The taste is mild with no unpleasant aftertaste, which is a big plus compared to other brands. The effect has been noticeable — I feel less fatigued and more energetic throughout the day. The package is sturdy and well-sealed, keeping the product fresh. I like that the formula is suitable for a wide range of ages, making it a versatile option for the family. The ingredients are clean and clearly listed, which gives me confidence in what I’m taking. Overall, a great Vitamin C supplement that balances effectiveness with convenience!
iHerb customer
Silver
Posted on Oct 23, 2025
Greece
128
0
2
21
quality product
Verified purchase
I use this vitamin to boost my energy, support my nervous system and brain functionand heart health. I have also read that other benefits are that it aids digestion and the immune system. Qualiy ingredients fron a trusted brand. the size is great and easy to swallow. The potency is right for me.
OlgaShaposhnikova
Silver
Posted on Oct 21, 2025
United States
112
3
1
21
Good value for a strong B-vitamin. The 100 mg dose of vitamin B-1
Verified purchase
Good value for a strong B-vitamin. The 100 mg dose of vitamin B-1 (thiamine) is higher than many products, so you’re getting serious support. The tablet size is manageable, and the ingredient list is very simple — only microcrystalline cellulose, vegetable-source stearic acid and magnesium stearate. I especially like how this supports my nervous system and energy production — after a busy day I noticed that my nerves feel calmer and I have a little more stamina. The cost is reasonable for 100 tablets of this strength. It’s a solid option if you want to support your nervous system and metabolism