vitamin b12
Skip itPrices mostly outside the sweet spot ($4.73–$7.99) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Incredible16.6%search→purchase rate — share of searches ending in a sale
Market size
Great£1.6M£1.6M/yr · 1.5M searches
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad7,909.45avg incumbent reviews — the moat a new listing must climb
Growth
Bad-7.0%90-day search growth — must beat 0% to launch
Avg price
Bad£6.51avg listing price — sweet spot $15–$100
Competition
Bad83%top-5 click share — a locked-up shelf
Price range
Bad£4.73–£7.99cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, vitamin b12 is a £1.6M/yr Amazon United Kingdom market (1.5M searches/yr). The top 5 brands hold 83% of demand. Verdict: Skip it — 47/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
vitamin b12 market data
- Units sold / yr
- 200K–250K
- avg 20,000–25,000/product
- Revenue / yr
- £1.3M–£1.6M
- units × avg price
- Conversion rate
- 16.6%
- Avg BSR
- #8
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.7%
- Avg brand age
- 63 months
- Avg seller age
- 163 days
Competition & brand share
The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.Brands
11 falling
Sellers
57
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
83%
Top 20: 100%
Open market
13%
- Nutrition Geeks41%
- WeightWorld22%
- Zipvit11%
- Solgar5%
- Nutravita4%
- Red Label Health4%
- Open — no brand owns it (5 brands, 13%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -7.0% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top vitamin b12 search terms
- vitamin b12548K/yr
- b12316K/yr
- b12 tablets high strength220K/yr
- b12 vitamin116K/yr
- vitamin b12 tablets high strength69K/yr
- b12 supplement32K/yr
- vitamin b12 methylcobalamin20K/yr
- b12 tablets30K/yr
- vit b1224K/yr
- vitamin b12 tablets28K/yr
Top vitamin b12 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 11 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Vitamin B12 Tablets High Strength - 1 Year Supply (365 Tablets) - 1000mcg Dual Power B12 Vitamin Complex with Methylcobalamin & Adenosylcobalamin - Vegan Supplement - (Packaging Design May Vary)
Nutrition Geeks£7.294.6★7,517 rev
Vitamin B12 Tablets - 450 Tablets (1+ Year Supply) - 1 Per Day - 1000mcg - 6mm in Size - Easy to Swallow - Methylcobalamin Form - Vegan Vitamin B12 Supplement for Men & Women - Made in the UK
WeightWorld£6.504.5★28,784 rev
Zipvit Vitamin B12 Tablets High Strength 1100mcg 1 Year Supply Pure Methylcobalamin 360 Vegan Tablets Reduces Tiredness Supports Energy and Immunity
Zipvit£6.664.6★10,839 rev
Solgar Vitamin 100 g B12 Tablets - Pack of 100 - Easy to take Form - for Healthy Nervous System Heart and Mind - Red Blood Cell Formation - Vegan
Solgar£4.734.6★14,756 rev
Nutravita Vitamin B12 1000mcg - 365 High Strength Vegan Tablets (1 Year Supply) - Max Strength B12 Supplement - Contributes to The Reduction of Tiredness and Fatigue - Made in The UK
Nutravita£7.774.7★9,029 rev
Newest
by launch dateVitamin B12 Tablets High Strength - 1 Year Supply (365 Tablets) - 1000mcg Dual Power B12 Vitamin Complex with Methylcobalamin & Adenosylcobalamin - Vegan Supplement - (Packaging Design May Vary)
Nutrition Geeks£7.297,517 rev
Vitamin B12 Tablets - 450 Tablets (1+ Year Supply) - 1 Per Day - 1000mcg - 6mm in Size - Easy to Swallow - Methylcobalamin Form - Vegan Vitamin B12 Supplement for Men & Women - Made in the UK
WeightWorld£6.5028,784 rev
Red Label Health Vitamin B12 Tablets High Strength 1000mcg for Men & Women Pack of 360 Tablets (1 Year Supply) Methylcobalamin B12 Vitamin for Tiredness and Fatigue Vegetarian Vegan
Red Label Health£5.04948 rev
Vitamin B12 High Strength Tablets - 1000mcg Vegan B12 Vitamin Methylcobalamin Supplement Contributes to The Reduction of Tiredness and Fatigue & Immune Energy Support Made in the UK (4 Month Supply)
NEW LEAF PRODUCTS£7.381,674 rev
Vegan Vitamin B12 Tablets 1500mcg Methylcobalamin High Strength with Added Folic Acid & Black Pepper - 180 Tablets (6 Month Supply) - Reduction of Tiredness & Fatigue - Made in The UK By YrHealth
yrhealth£7.991,957 rev
Trending
90-day click momentum
Natures Aid Vitamin B12 1000g High Strength Sublingual Tablets Supports Energy Metabolism & Nervous System Vegan Non-GMO Gluten-Free Supplement 90 Tablets
Natures Aid£5.354.6★
Nutravita Vitamin B12 1000mcg - 365 High Strength Vegan Tablets (1 Year Supply) - Max Strength B12 Supplement - Contributes to The Reduction of Tiredness and Fatigue - Made in The UK
Nutravita£7.774.7★
Solgar Vitamin 100 g B12 Tablets - Pack of 100 - Easy to take Form - for Healthy Nervous System Heart and Mind - Red Blood Cell Formation - Vegan
Solgar£4.734.6★
Zipvit Vitamin B12 Tablets High Strength 1100mcg 1 Year Supply Pure Methylcobalamin 360 Vegan Tablets Reduces Tiredness Supports Energy and Immunity
Zipvit£6.664.6★
BetterYou Vitamin B12 Oral Spray High Strength Methylcobalamin Supplement 1200mcg per dose to Boost Energy Natural Apricot Flavour 48-Day Supply
Better You£6.274.6★
What buyers say about vitamin b12
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent value for money”
“Great quality arrived on time thanks Amazon”
“Good quality vitamin tablets”
“so no problem swallowing”
“As advertised”
“Ease of use”
“Good daily supplement”
“Energy boost”
“B12+ Just been a week since I started them”
“Good supplement”
What buyers complain about
“your body will not absorb the amount you think it is in the daily dose”
“Made no difference”
“Belly Cramps”
“Much smaller than expected”
“I assume there maybe issues with my absorption of this vitamin”
“does not leave a lasting taste”
“others like myself may be sensitive to them”
“sadly cant get injection from NHS after a year of taking these my reading still borderline down to the fact these pass through the gut”
“I have to have regular blood tests as I am diabetic”
“sadly cant get injection from NHS after a year of taking these my reading still borderline down to the fact these pass through the gut”
Top return reasons
Common questions
- Is vitamin b12 profitable to sell on Amazon United Kingdom?
- The niche generates £1.6M/yr across 11 tracked products. 90-day search growth is -7.0%. Flapen's verdict: Skip it (47/100).
- How competitive is the vitamin b12 niche?
- 11 brands and 57 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in vitamin b12?
- Top complaints mined from reviews: Dosage, Functionality-Overall, Side Effects. The return rate is 0.1%.
- When does demand for vitamin b12 peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the vitamin b12 niche?
- Listings span £4.73–£7.99; the average listing price is £6.51 (sweet spot $15–$100). The average incumbent carries 7,909 reviews — the moat a new listing must climb.