---
title: "Riboflavin 5 Phosphate — $74K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/riboflavin-5-phosphate"
last_updated: "2026-08-11T16:45:21.493Z"
locale: en
meta:
description: "Niche score 42/100 · $74K/yr market · 29K searches/yr · $19.69 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · $74K/yr market · 29K searches/yr · $19.69 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Riboflavin 5 Phosphate — $74K/yr Amazon US Niche (2026) - Flapen"
---
# **riboflavin 5 phosphate**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 19Growth 30Conversion 96Competition 0Returns 100Price range 89Avg price 87Brand share 0Review moat 87Quality gap 25
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.9%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$13.71–$30.99**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****265.6**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$19.69**
avg listing price — sweet spot $15–$100
**Growth**
**Okay****+3.9%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$74K**
$74K/yr · 29K searches
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, riboflavin 5 phosphate is a $74K/yr Amazon United States market (29K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 42/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **riboflavin 5 phosphate market data**
- **Units sold / yr**
- **4K–5K**
- avg 750–1,000/product
- **Revenue / yr**
- **$79K–$98K**
- units × avg price
- **Conversion rate**
- **12.9%**
- **Avg BSR**
- **#33**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **102 months**
- **Avg seller age**
- **173 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **—flat
**Sellers**
**7**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- THORNE64% - Nutricost19% - Swanson6% - Seeking Health5% - Vitamatic5% - Open — no brand owns it (0%)
## **Demand**
Weekly Amazon search volume, last 22 weeks — +3.9% search growth over the last 90 days.
700500Spike '26Mar '26Mar '26Apr '26May '26May '26Jun '26Jul '26
[**Open Trend **](https://flapen.com/research/us/health-household/riboflavin-5-phosphate/trend)
## **Top riboflavin 5 phosphate search terms**
- **riboflavin 5 phosphate**12K/yr+1.7%7.2% conv. - **r5p**7K/yr+6.9%11.8% conv. - **thorne riboflavin 5-phosphate**5K/yr+7.7%26.6% conv. - **thorne b2**3K/yr+4.7%15.4% conv. - **thorne riboflavin**3K/yr-4.5%22.6% conv. [**All search terms **](https://flapen.com/research/us/health-household/riboflavin-5-phosphate/search-terms)
## **Top riboflavin 5 phosphate 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%20%$15K40%$30K60%$45K80%$59K101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 5 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**THORNE - Riboflavin 5-Phosphate - Bioactive Tissue Ready Form of Vitamin B2 for Methylation Support* - Vitamin B2 Supplement - Third-Party Certified - Gluten Dairy & Soy-Free - 60 Capsules**THORNE**$30.99**4.8★586 rev](https://www.amazon.com/dp/B0797MLY4M) [2**Nutricost R-5-P (Riboflavin-5-Phosphate) (Vitamin B2) 50mg 120 Capsules**Nutricost**$15.68**4.7★100 rev](https://www.amazon.com/dp/B0DV8FQH4W) [3**Swanson R-5-P (Riboflavin-5-Phosphate) - Vitamin B2 Supplement Promoting Energy Metabolism & Vision Health - Natural Wellness Formula - (60 Capsules)**Swanson**$13.71**4.5★212 rev](https://www.amazon.com/dp/B00NIPTK5U) [4**Seeking Health Riboflavin - Vitamin B2 Supplement for Methylation Support - Support Homocysteine Metabolism with Antioxidant Ingredients - 400 mg 60 Capsules**Seeking Health**$24.34**4.6★395 rev](https://www.amazon.com/dp/B00FL3H9NM) [5**Vitamatic R-5-P Riboflavin-5-Phosphate (Vitamin B2) 50 mg | 120 Capsules | High Potency Easy-to-Swallow Vegetarian Capsules**Vitamatic**$13.71**4.4★35 rev](https://www.amazon.com/dp/B0FN4Q5JZC)
### **Newest**
by launch date
[**Vitamatic R-5-P Riboflavin-5-Phosphate (Vitamin B2) 50 mg | 120 Capsules | High Potency Easy-to-Swallow Vegetarian Capsules**Vitamatic**$13.71**35 rev1y ago](https://www.amazon.com/dp/B0FN4Q5JZC) [**Nutricost R-5-P (Riboflavin-5-Phosphate) (Vitamin B2) 50mg 120 Capsules**Nutricost**$15.68**100 rev1y ago](https://www.amazon.com/dp/B0DV8FQH4W) [**Swanson R-5-P (Riboflavin-5-Phosphate) - Vitamin B2 Supplement Promoting Energy Metabolism & Vision Health - Natural Wellness Formula - (60 Capsules)**Swanson**$13.71**212 rev11y ago](https://www.amazon.com/dp/B00NIPTK5U) [**Seeking Health Riboflavin - Vitamin B2 Supplement for Methylation Support - Support Homocysteine Metabolism with Antioxidant Ingredients - 400 mg 60 Capsules**Seeking Health**$24.34**395 rev12y ago](https://www.amazon.com/dp/B00FL3H9NM) [**THORNE - Riboflavin 5-Phosphate - Bioactive Tissue Ready Form of Vitamin B2 for Methylation Support* - Vitamin B2 Supplement - Third-Party Certified - Gluten Dairy & Soy-Free - 60 Capsules**THORNE**$30.99**586 rev24y ago](https://www.amazon.com/dp/B0797MLY4M)
### **Trending**
90-day click momentum
[**Vitamatic R-5-P Riboflavin-5-Phosphate (Vitamin B2) 50 mg | 120 Capsules | High Potency Easy-to-Swallow Vegetarian Capsules**Vitamatic**$13.71**4.4★**▲ 25%**](https://www.amazon.com/dp/B0FN4Q5JZC) [**THORNE - Riboflavin 5-Phosphate - Bioactive Tissue Ready Form of Vitamin B2 for Methylation Support* - Vitamin B2 Supplement - Third-Party Certified - Gluten Dairy & Soy-Free - 60 Capsules**THORNE**$30.99**4.8★**— 3%**](https://www.amazon.com/dp/B0797MLY4M) [**Nutricost R-5-P (Riboflavin-5-Phosphate) (Vitamin B2) 50mg 120 Capsules**Nutricost**$15.68**4.7★**— 6%**](https://www.amazon.com/dp/B0DV8FQH4W) [**Seeking Health Riboflavin - Vitamin B2 Supplement for Methylation Support - Support Homocysteine Metabolism with Antioxidant Ingredients - 400 mg 60 Capsules**Seeking Health**$24.34**4.6★**— 8%**](https://www.amazon.com/dp/B00FL3H9NM) [**Swanson R-5-P (Riboflavin-5-Phosphate) - Vitamin B2 Supplement Promoting Energy Metabolism & Vision Health - Natural Wellness Formula - (60 Capsules)**Swanson**$13.71**4.5★**▼ 19%**](https://www.amazon.com/dp/B00NIPTK5U)
## **What buyers say about riboflavin 5 phosphate**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Great quality”*
**Value For Money**13%
*“Great price”*
**Vitamin**12%
*“High Potency, Easy-to-Swallow Vegetarian Capsules seem to be a great value :”*
**Sleep Quality**11%
*“Helps Me With Sleep”*
**Ease Of Chewing/Swallowing**10%
*“These are easy to swallow”*
**Hormonal Balance**8%
*“An Important and Highly Effective Tool in the Battle Against Homocysteine”*
**Efficiency**6%
*“It works better than Riboflavin”*
**Advertised Vs Actual Product**6%
*“Just right”*
**Visibility**3%
*“I appreciate that transparency”*
**Taste-Overall**2%
*“No bad taste or smell to them”*
### **What buyers complain about **
**Ingredients-Overall**17%
*“Cheap mystery chemical”*
**Size-Overall**17%
*“Tiny”*
**Side Effects**14%
*“However, homocysteine levels ARE causative and the results matter, it isnt just an increase in cardiovascular disease, high homocysteine levels can result in complications to a pregnancy as well as a child suffering from developmental disorders”*
**Quality-Overall**8%
*“Typical cheap brand of God only knows what”*
**Strength**8%
*“Too Strong”*
**Sleep Quality**6%
*“My body shut down for a nap”*
**Vitamin**4%
*“Like buying my vitamins from Thorne this is not the first time for me”*
## **Common questions**
- **Is riboflavin 5 phosphate profitable to sell on Amazon United States?**
- The niche generates $74K/yr across 5 tracked products. 90-day search growth is +3.9%. Flapen's verdict: Skip it (42/100).
- **How competitive is the riboflavin 5 phosphate niche?**
- 5 brands and 7 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in riboflavin 5 phosphate?**
- Top complaints mined from reviews: Ingredients-Overall, Size-Overall, Side Effects. The return rate is 0.0%.
- **What does it cost to enter the riboflavin 5 phosphate niche?**
- Listings span $13.71–$30.99; the average listing price is $19.69 (sweet spot $15–$100). The average incumbent carries 266 reviews — the moat a new listing must climb.
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