Is b12 sublingual profitable to sell on Amazon United Kingdom?

The niche generates £64K/yr across 21 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -17.8%. Flapen's verdict: Skip it (44/100).

How competitive is the b12 sublingual niche?

13 brands and 70 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 80% of demand.

What do buyers complain about in b12 sublingual?

Top complaints mined from reviews: Taste-Overall, Dosage, Side Effects. The return rate is 0.1%.

When does demand for b12 sublingual peak?

Demand peaks in Apr–Oct; the busiest month runs 2.5× the quietest.

What does it cost to enter the b12 sublingual niche?

Listings span £4.73–£20.54; the average listing price is £10.79 (sweet spot $15–$100). The average incumbent carries 6,472 reviews — the moat a new listing must climb.

b12 sublingual

Skip it

A small market ($64K/yr) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Great11.6%

search→purchase rate — share of searches ending in a sale

Competition

Okay57%

top-5 click share — leaders hold, buyers still browse

Brand share

Okay80%

top-5 brand share — brands hold most of the demand

Avg price

Okay£10.79

avg listing price — sweet spot $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Price range

Okay£4.73–£20.54

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Bad6,472.48

avg incumbent reviews — the moat a new listing must climb

Market size

Bad£64K

£64K/yr · 51K searches

Growth

Bad-17.8%

90-day search growth — must beat 0% to launch

According to Flapen's Amazon United Kingdom niche tracking, b12 sublingual is a £64K/yr Amazon United Kingdom market (51K searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Apr–Oct. Verdict: Skip it — 44/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

b12 sublingual market data

Units sold / yr: 5K–6K; avg 250–500/product
Revenue / yr: £54K–£65K; units × avg price
Conversion rate: 11.6%
Avg BSR: #19
Page quality: 0%
Prime: 100%
Sponsored: 86%
Out of stock: 4.5%
Avg brand age: 67 months
Avg seller age: 173 days

Competition & brand share

The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.

Brands

13 flat

Sellers

Top-5 brand share

80%

Top 20: 100%

Top-5 click share

57%

Top 20: 100%

Open market

15%

Solgar49%
Igennus Healthcare Nutrition11%
Royal Oak Health8%
Natures Aid7%
Nature Provides5%
Nutrition Geeks5%
Open — no brand owns it (7 brands, 15%)

Demand & seasonality

Weekly Amazon search volume, last 84 weeks — -17.8% search growth over the last 90 days.

Peak months: Apr, Oct · busiest ÷ quietest = 2.5×

Open Trend

Top b12 sublingual search terms

b12 sublingual11K/yr -12.5%9.0% conv.
solgar b1214K/yr -32.7%12.8% conv.
sublingual vitamin b128K/yr -17.2%9.2% conv.
sublingual b125K/yr -19.6%8.3% conv.
solgar vitamin b124K/yr +10.2%12.0% conv.
methylcobalamin b12 sublingual3K/yr -2.1%9.1% conv.
vitamin b12 sublingual3K/yr -10.5%8.1% conv.
b12 solgar3K/yr -11.8%14.5% conv.

All search terms

Top b12 sublingual 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.

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

Solgar Vitamin B12 1000 g Sublingual Chewable Nuggets - Pack of 250 - Reduces Fatigue and Supports Energy Release - Vegan

Solgar£16.024.6★14,756 rev

Solgar Vitamin B12 Sublingual Chewable Nuggets - Food Supplement Pack of 100 - Supports Energy Metabolism - Vegan

Solgar£9.064.6★14,756 rev

Igennus Super Vitamin B12 Complex 1000mcg Sublingual 180 Servings Vegan

Igennus Healthcare Nutrition£12.844.5★6,638 rev

Vitamin B12 Tablets High Strength 1000mcg Sublingual Methylcobalamin x120 Tablets (Tropical Berry Flavour) Active fast dissolving Vit B12 (4 Month Supply) Vegan Friendly Supplement - Royal Oak Health

Royal Oak Health£12.344.6★238 rev

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★921 rev

Newest

by launch date

Vitamin B12 Liquid Drops with B6 Sublingual Methylcobalamin B12 Supplement High Strength B Complex Energy Metabolism & Daily Wellness SupportRaspberry Flavor

GMOLARSUSCO£9.9129 rev

4mo ago

Igennus Super Vitamin B12 Complex 5000mcg High Strength Liquid Sublingual Spray Methylcobalamin Adenosylcobalamin & Hydroxocobalamin Methylated & Clean Natural Cherry Flavour 45 Servings Vegan

Igennus Healthcare Nutrition£16.40212 rev

1y ago

Vitamin B12 Liquid Drops 5000mcg - 60ml (2 Months Supply) - High Strength Methylcobalamin Supplement - Vegan & Vegetarian Friendly - By Alpha01

ALPHA01£8.20519 rev

2y ago

Flowzuk Vitamin B12 Liquid Drops 5000mcg High Strength Methylcobalamin Fast Absorbing Vegan B12 Supplement 60ml Dropper Bottle Gluten Free Energy & Wellness Support

Flowzuk£20.54158 rev

3y ago

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£7.297,517 rev

3y ago

What buyers say about b12 sublingual

What buyers praise and complain about, mined from review topics.

What buyers love

Value For Money14%

“Good Price”

Quality-Overall14%

“Great quality arrived on time thanks Amazon”

Vitamin13%

“Vitamin D. Excellent”

Ease Of Chewing/Swallowing8%

“The drops absorb quickly under the tongue and after 30 seconds, anything left you just swallow”

Ease Of Use5%

“Ease of use”

Energy Level5%

“improved energy levels”

Advertised Vs Actual Product5%

“As advertised”

Taste-Overall5%

“Good taste”

Efficiency3%

“effective theyve been”

Nutritional Content2%

“Good health”

What buyers complain about

Taste-Overall8%

“Tasteless small tablets”

Dosage8%

“Unless your doctor tells you that you specifically need this high of a dose”

Side Effects5%

“Belly Cramps”

Vitamin5%

“I assume there maybe issues with my absorption of this vitamin”

Functionality-Overall5%

“didn't work for me”

Value For Money4%

“Expensive”

Size-Overall3%

“The tablets are small”

Calcium2%

“My B12 gone up”

Blood Sugar Level2%

“I have to have regular blood tests as I am diabetic”

Solubility2%

“Take a while to dissolve”

Top return reasons

Value For Money100%

Common questions

Is b12 sublingual profitable to sell on Amazon United Kingdom?: The niche generates £64K/yr across 21 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -17.8%. Flapen's verdict: Skip it (44/100).
How competitive is the b12 sublingual niche?: 13 brands and 70 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 80% of demand.
What do buyers complain about in b12 sublingual?: Top complaints mined from reviews: Taste-Overall, Dosage, Side Effects. The return rate is 0.1%.
When does demand for b12 sublingual peak?: Demand peaks in Apr–Oct; the busiest month runs 2.5× the quietest.
What does it cost to enter the b12 sublingual niche?: Listings span £4.73–£20.54; the average listing price is £10.79 (sweet spot $15–$100). The average incumbent carries 6,472 reviews — the moat a new listing must climb.