Is b12 injections profitable to sell on Amazon United States?

The niche generates $73K/yr across 16 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -9.4%. Flapen's verdict: Skip it (41/100).

How competitive is the b12 injections niche?

13 brands and 82 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 80% of demand.

What do buyers complain about in b12 injections?

Top complaints mined from reviews: Taste-Overall, Smell, Functionality-Overall. The return rate is 0.0%.

When does demand for b12 injections peak?

Demand peaks in Jan–Feb–Dec; the busiest month runs 2.6× the quietest.

What does it cost to enter the b12 injections niche?

Listings span $8.50–$50.51; the average listing price is $25.19 (sweet spot $15–$100). The average incumbent carries 3,592 reviews — the moat a new listing must climb.

b12 injections

Skip it

Weak search conversion (1.3%) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$25.19

avg listing price — sweet spot $15–$100

Price range

Great$8.50–$50.51

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Brand share

Okay80%

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

Review moat

Okay3,592.13

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-9.4%

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

Competition

Bad75%

top-5 click share — a locked-up shelf

Market size

Bad$73K

$73K/yr · 216K searches

Conversion

Bad1.3%

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

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, b12 injections is a $73K/yr Amazon United States market (216K searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Jan–Feb–Dec. Verdict: Skip it — 41/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

b12 injections market data

Units sold / yr: 3K–4K; avg 100–250/product
Revenue / yr: $76K–$101K; units × avg price
Conversion rate: 1.3%
Avg BSR: #336
Page quality: 0%
Prime: 88%
Sponsored: 94%
Out of stock: 4.7%
Avg brand age: 75 months
Avg seller age: 159 days

Competition & brand share

The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.

Brands

13 falling

Sellers

Top-5 brand share

80%

Top 20: 100%

Top-5 click share

75%

Top 20: 100%

Open market

16%

Generic34%
Designs for Health18%
Neurobion13%
VITBOOST8%
NOW Foods6%
PROTOCOL FOR LIFE BALANCE4%
Open — no brand owns it (7 brands, 16%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -9.4% search growth over the last 90 days.

Peak months: Jan, Feb, Dec · busiest ÷ quietest = 2.6×

Open Trend

Top b12 injections search terms

b12 injections44K/yr +6.0%0.7% conv.
b12 injections for humans39K/yr -19.6%1.4% conv.
b12 shots injections29K/yr -7.2%1.4% conv.
injectable b1220K/yr -10.8%1.5% conv.
b12 injectable9K/yr +2.8%0.9% conv.
b12 injection9K/yr +10.1%0.8% conv.
vitamin b12 injectable6K/yr -0.2%1.2% conv.
vitamin b12 injections8K/yr -13.7%0.8% conv.
vitamin b12 shots injection at home5K/yr -19.3%2.2% conv.
inyecciones de vitamina b126K/yr -22.6%0.4% conv.

All search terms

Top b12 injections 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 16 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

B12 Solution 5mL 6 Pack - Daily Nutrient Support for Energy & Vitality Balanced Formula with Sodium Chloride

Generic$19.944.0★20 rev

Designs for Health Trifolamin B12 + Folate Lozenges - 3000mcg B12 (Three Forms) + MTHF Methylfolate Supplement - Delicious Orange Flavor Fast-Dissolve Tablets (60 Lozenges)

Designs for Health$50.514.7★396 rev

Neurobion Extra Forte B12 10 000 mcg Liquid Dietary Supplement - High Potency B Complex Drinkable Oral Vials for Extreme Energy Support Complex Easy Oral Drinkable10 Vials

Neurobion$33.814.6★3,411 rev

VITBOOST Vitamin B12 Liquid Drops - 60 x 5000 mcg Vegan B12 Sublingual

VITBOOST$19.054.6★11,650 rev

Designs for Health B12 Tricobalamin Lozenges - 3000mcg Triple B12 Quick Dissolve Tablets with Methylcobalamin Adenosylcobalamin + Hydroxocobalamin - Natural Orange Flavor (60 Lozenges)

Designs for Health$46.624.8★301 rev

Newest

by launch date

B12 Solution 5mL 3 Pack - Daily Nutrient Support for Energy & Vitality Balanced Formula with Sodium Chloride

Generic$14.974 rev

2mo ago

B12 Solution 5mL 6 Pack - Daily Nutrient Support for Energy & Vitality Balanced Formula with Sodium Chloride

Generic$19.9420 rev

2mo ago

NUSAVA (2 Pack) Vitamin B12 Liquid Drops with B6 B1 Niacin & Folate B12 Sublingual Vitamin B Complex Methylcobalamin 5000 mcg for Energy Brain & Heart Support Raspberry Flavor 80 Servings

NUSAVA$25.048,208 rev

3y ago

B12 Patches (Pack of 36) - 100% Natural Vitamin Patches for Women Energy Focus & Body Support Self-Adhesive Transparent Patches - Enhanced Formula

Spirit Patches$18.94240 rev

3y ago

Vita Sciences Vitamin B12 Patch - Extra Strength Formula for Men and Women 1 Month Supply. Boost Energy Focus Memory & Metabolism

Vita Sciences$22.88549 rev

5y ago

What buyers say about b12 injections

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

What buyers love

Quality-Overall15%

“Great quality B complex”

Taste-Overall14%

“taste great and is easy to take”

Vitamin13%

“It's a very great supplement vitamin”

Energy Level13%

“Energy Boost”

Ease Of Use5%

“Ease of use”

Value For Money4%

“Good value”

Advertised Vs Actual Product4%

“Just as advertised”

Efficiency4%

“Works as good as injections”

Flavor3%

“The flavor is very yummy”

Absorbency2%

“Easily Absorbed”

What buyers complain about

Taste-Overall35%

“taste is a bit strong”

Smell15%

“Strong odor”

Functionality-Overall4%

“It doesnt do for you”

Energy Level4%

“I felt absolutely no increase in energy”

Vitamin4%

“The worst B-vitamins I have ever taken”

Dosage4%

“The 5000 MG recommended dose is insane”

Pain Relief-Overall2%

“Pain”

Flavor2%

“I dont like the flavor”

Side Effects1%

“Unknowingly took recommended dosage and ended up at doctor getting EKG for having heart palpitations and anxiety”

Dilute/Watery1%

“even with diluting in water”

Top return reasons

Leak-Proof50%

Advertised Vs Actual Product12%

Value For Money8%

Size-Overall8%

Defective Material/Parts4%

Functionality-Overall4%

Smell4%

Escape Proof4%

Taste-Overall4%

Ingredients-Overall4%

Common questions

Is b12 injections profitable to sell on Amazon United States?: The niche generates $73K/yr across 16 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -9.4%. Flapen's verdict: Skip it (41/100).
How competitive is the b12 injections niche?: 13 brands and 82 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 80% of demand.
What do buyers complain about in b12 injections?: Top complaints mined from reviews: Taste-Overall, Smell, Functionality-Overall. The return rate is 0.0%.
When does demand for b12 injections peak?: Demand peaks in Jan–Feb–Dec; the busiest month runs 2.6× the quietest.
What does it cost to enter the b12 injections niche?: Listings span $8.50–$50.51; the average listing price is $25.19 (sweet spot $15–$100). The average incumbent carries 3,592 reviews — the moat a new listing must climb.