---
title: "Vitamin B1 — $4.3M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/vitamin-b1"
last_updated: "2026-08-06T14:35:06.021Z"
locale: en
meta:
description: "Niche score 60/100 · $4.3M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 60/100 · $4.3M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Vitamin B1 — $4.3M/yr Amazon US Niche (2026) - Flapen"
---
# **vitamin b1**
**Worth a look**
Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 97Growth 24Conversion 96Competition 30Returns 100Price range 80Avg price 84Brand share 55Review moat 30Quality gap 23
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$4.3M**
$4.3M/yr · 1.7M searches
**Conversion**
**Incredible****13.4%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$18.49**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$5.44–$56.44**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****72%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****67%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Okay****3,537.43**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-1.9%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, vitamin b1 is a $4.3M/yr Amazon United States market (1.7M searches/yr). The top 5 brands hold 72% of demand. Verdict: Worth a look — 60/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **vitamin b1 market data**
- **Units sold / yr**
- **250K–300K**
- avg 12,500–15,000/product
- **Revenue / yr**
- **$4.6M–$5.5M**
- units × avg price
- **Conversion rate**
- **13.4%**
- **Avg BSR**
- **#104**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **90%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **76 months**
- **Avg seller age**
- **150 days**
## **Competition & brand share**
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**18 **▲rising
**Sellers**
**43**
**Top-5 brand share**
**72%**
Top 20: 100%
**Top-5 click share**
**67%**
Top 20: 99%
**Open market**
**24%**
- Nutricost26% - Nature Made17% - NOW Foods16% - Dr. Berg Nutritionals9% - Micro Ingredients5% - Vitamatic4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -1.9% search growth over the last 90 days.
45K35KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/health-household/vitamin-b1/trend)
## **Top vitamin b1 search terms**
- **vitamin b1**536K/yr+6.6%12.7% conv. - **thiamine b1 supplement**157K/yr-18.8%11.8% conv. - **thiamine**156K/yr-16.1%9.8% conv. - **b1 vitamin**145K/yr-6.5%13.4% conv. - **vitamina b1**48K/yr-27.1%4.3% conv. - **vit b1**37K/yr+2.3%11.5% conv. - **b1 thiamine**27K/yr-5.9%9.6% conv. - **b 1**27K/yr+2.9%11.7% conv. - **b1 vitamins**30K/yr+14.8%10.4% conv. - **vitamin b 1**23K/yr-4.6%11.2% conv. [**All search terms **](https://flapen.com/research/us/health-household/vitamin-b1/search-terms)
## **Top vitamin b1 products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%$216K10%$431K15%$647K20%$863K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutricost Vitamin B1 (Thiamine) 500mg 120 Capsules**Nutricost**$14.86**4.7★11,430 rev](https://www.amazon.com/dp/B01J4OUZBG) [2**Nature Made Vitamin B1 100mg Tablets 100 Tablets**Nature Made**$6.43**4.7★19,487 rev](https://www.amazon.com/dp/B000GG2K2E) [3**NOW Foods Supplements Vitamin B-1 100 mg Energy Production* Nervous System Health* 100 Tablets**NOW Foods**$5.44**4.7★9,728 rev](https://www.amazon.com/dp/B0009P3DRS) [4**Nutricost Vitamin B1 (Thiamine) 100mg 120 Capsules Gluten Free**Nutricost**$9.85**4.7★6,107 rev](https://www.amazon.com/dp/B07L1C5JHZ) [5**Dr. Berg Natural Vitamin B1 B6 B12 Complex - Allithiamine Vitamin B1 Supplement with 8 Essential Vitamin B Complex for Men & Women Including Thiamin Niacin Folate Magnesium & More - 60 Capsules**Dr. Berg Nutritionals**$25.92**4.7★4,061 rev](https://www.amazon.com/dp/B0CHK2Q2T1)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Micro Ingredients Vitamin B1 Thiamine 500mg Per Serving 240 Softgels**Micro Ingredients**$23.86**288 rev1y ago](https://www.amazon.com/dp/B0F5M8Z61H) [**Vykee Nutrition Vitamin B1 (Thiamine) Capsules 500 mg**Vykee Nutrition**$22.52**348 rev1y ago](https://www.amazon.com/dp/B0DTRRK63Y) [**Bronson Vitamin B1 Extra Strength 500 MG High Potency Non-GMO 60 Capsules**Bronson**$9.99**1,239 rev2y ago](https://www.amazon.com/dp/B0CWVSCDRH) [**BulkSupplements.com Thiamine HCl Capsules - Thiamine Hydrochloride Vitamin B1 Supplements - Gluten Free 1 Capsule per Serving 500 Count (Pack of 1)**BulkSupplements**$18.98**251 rev2y ago](https://www.amazon.com/dp/B0BQ4QX94B) [**Dr. Berg Natural Vitamin B1 B6 B12 Complex - Allithiamine Vitamin B1 Supplement with 8 Essential Vitamin B Complex for Men & Women Including Thiamin Niacin Folate Magnesium & More - 60 Capsules**Dr. Berg Nutritionals**$25.92**4,061 rev2y ago](https://www.amazon.com/dp/B0CHK2Q2T1)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Benfotiamine 300mg Servings (Third Party Tested 120 Capsules 150mg Per Cap) Non-GMO to Boost Thiamine B1 Levels (More Absorbable Than Thiamine Fat Soluble) by Double Wood**Double Wood Supplements**$19.42**4.7★**▲ 83%**](https://www.amazon.com/dp/B09SGKPG52) [**Vitamatic Vitamin B1 (As Thiamine Mononitrate) 100mg 250 Vegetarian Tablets Supports Energy Production Nervous System Function & Heart Health***Vitamatic**$9.80**4.8★**▲ 57%**](https://www.amazon.com/dp/B09PDB2GYW) [**Life Extension Benfotiamine with Thiamine 100 mg benfotiamine Cardiovascular Health Brain Health Non-GMO Gluten-Free 120 Vegetarian Capsules**Life Extension**$14.00**4.6★**▲ 50%**](https://www.amazon.com/dp/B000MYXVTQ) [**NOW Foods Supplements Vitamin B-1 100 mg Energy Production* Nervous System Health* 100 Tablets**NOW Foods**$5.44**4.7★**▲ 39%**](https://www.amazon.com/dp/B0009P3DRS) [**kindnature Vitamin B1 Gummies 500mg High Potency Thiamine Supplement for Energy Focus & Nervous System Vegan Non-GMO Chewable B1 Vitamins for Adults & Kids Natural Strawberry Flavor 60 Ct**kindnature**$21.70**4.5★**▲ 32%**](https://www.amazon.com/dp/B0C8DD42R8)
**~~View all trending →~~**
## **What buyers say about vitamin b1**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“A solid brand”*
**Vitamin**18%
*“This are great and natural vitamins”*
**Value For Money**10%
*“Price is affordable”*
**Advertised Vs Actual Product**6%
*“Just as advertised”*
**Energy Level**6%
*“Gives me IMMENSE energy boost”*
**Sleep Quality**4%
*“Helps with sleep”*
**Ease Of Chewing/Swallowing**3%
*“not hard to swallow”*
**Taste-Overall**3%
*“Great tasting gummies”*
**Efficiency**3%
*“Works well”*
**Dosage**2%
*“Seems to be very helpful still have a quarter of a bottle to go”*
### **What buyers complain about **
**Taste-Overall**7%
*“Did not like the taste”*
**Vitamin**7%
*“Has a bit of a vitamin smell”*
**Smell**7%
*“smells HORRIBLE”*
**Size-Overall**5%
*“These capsules are HUGE”*
**Ease Of Chewing/Swallowing**5%
*“I cant get the capsule swallowed”*
**Value For Money**5%
*“Waste of money”*
**Allergies**5%
*“a mammalian food product that will trigger an allergic reaction”*
**Dosage**4%
*“I cannot take these unfortunately”*
**Side Effects**4%
*“something about it caused me ANAPHYLAXIS”*
**Stress/Anxiety**3%
*“feel bad the next day”*
### **Top return reasons **
**Functionality-Overall**30%
**Acid Regulator/Stomach Ache Relief**30%
**Taste-Overall**20%
**Magnesium**20%
## **Common questions**
- **Is vitamin b1 profitable to sell on Amazon United States?**
- The niche generates $4.3M/yr across 21 tracked products. 90-day search growth is -1.9%. Flapen's verdict: Worth a look (60/100).
- **How competitive is the vitamin b1 niche?**
- 18 brands and 43 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 72% of demand.
- **What do buyers complain about in vitamin b1?**
- Top complaints mined from reviews: Taste-Overall, Vitamin, Smell. The return rate is 0.0%.
- **When does demand for vitamin b1 peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the vitamin b1 niche?**
- Listings span $5.44–$56.44; the average listing price is $18.49 (sweet spot $15–$100). The average incumbent carries 3,537 reviews — the moat a new listing must climb.
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