riboflavin 5 phosphate
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible12.9%search→purchase rate — share of searches ending in a sale
Price range
Great$13.71–$30.99cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great265.6avg incumbent reviews — the moat a new listing must climb
Avg price
Great$19.69avg listing price — sweet spot $15–$100
Growth
Okay+3.9%90-day search growth — must beat 0% to launch
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$74K$74K/yr · 29K searches
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%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
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.Top riboflavin 5 phosphate search terms
- riboflavin 5 phosphate12K/yr
- r5p7K/yr
- thorne riboflavin 5-phosphate5K/yr
- thorne b23K/yr
- thorne riboflavin3K/yr
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.
All 5 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$30.994.8★586 rev
Nutricost R-5-P (Riboflavin-5-Phosphate) (Vitamin B2) 50mg 120 Capsules
Nutricost$15.684.7★100 rev
Swanson R-5-P (Riboflavin-5-Phosphate) - Vitamin B2 Supplement Promoting Energy Metabolism & Vision Health - Natural Wellness Formula - (60 Capsules)
Swanson$13.714.5★212 rev
Seeking Health Riboflavin - Vitamin B2 Supplement for Methylation Support - Support Homocysteine Metabolism with Antioxidant Ingredients - 400 mg 60 Capsules
Seeking Health$24.344.6★395 rev
Vitamatic R-5-P Riboflavin-5-Phosphate (Vitamin B2) 50 mg | 120 Capsules | High Potency Easy-to-Swallow Vegetarian Capsules
Vitamatic$13.714.4★35 rev
Newest
by launch dateVitamatic R-5-P Riboflavin-5-Phosphate (Vitamin B2) 50 mg | 120 Capsules | High Potency Easy-to-Swallow Vegetarian Capsules
Vitamatic$13.7135 rev
Nutricost R-5-P (Riboflavin-5-Phosphate) (Vitamin B2) 50mg 120 Capsules
Nutricost$15.68100 rev
Swanson R-5-P (Riboflavin-5-Phosphate) - Vitamin B2 Supplement Promoting Energy Metabolism & Vision Health - Natural Wellness Formula - (60 Capsules)
Swanson$13.71212 rev
Seeking Health Riboflavin - Vitamin B2 Supplement for Methylation Support - Support Homocysteine Metabolism with Antioxidant Ingredients - 400 mg 60 Capsules
Seeking Health$24.34395 rev
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$30.99586 rev
Trending
90-day click momentumVitamatic R-5-P Riboflavin-5-Phosphate (Vitamin B2) 50 mg | 120 Capsules | High Potency Easy-to-Swallow Vegetarian Capsules
Vitamatic$13.714.4★
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$30.994.8★
Nutricost R-5-P (Riboflavin-5-Phosphate) (Vitamin B2) 50mg 120 Capsules
Nutricost$15.684.7★
Seeking Health Riboflavin - Vitamin B2 Supplement for Methylation Support - Support Homocysteine Metabolism with Antioxidant Ingredients - 400 mg 60 Capsules
Seeking Health$24.344.6★
Swanson R-5-P (Riboflavin-5-Phosphate) - Vitamin B2 Supplement Promoting Energy Metabolism & Vision Health - Natural Wellness Formula - (60 Capsules)
Swanson$13.714.5★
What buyers say about riboflavin 5 phosphate
What buyers praise and complain about, mined from review topics.What buyers love
“Great quality”
“Great price”
“High Potency, Easy-to-Swallow Vegetarian Capsules seem to be a great value :”
“Helps Me With Sleep”
“These are easy to swallow”
“An Important and Highly Effective Tool in the Battle Against Homocysteine”
“It works better than Riboflavin”
“Just right”
“I appreciate that transparency”
“No bad taste or smell to them”
What buyers complain about
“Cheap mystery chemical”
“Tiny”
“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”
“Typical cheap brand of God only knows what”
“Too Strong”
“My body shut down for a nap”
“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.