Is b complex 100 profitable to sell on Amazon United States?

The niche generates $466K/yr across 24 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +5.9%. Flapen's verdict: Worth a look (54/100).

How competitive is the b complex 100 niche?

14 brands and 167 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 85% of demand.

What do buyers complain about in b complex 100?

Top complaints mined from reviews: Vitamin, Dosage, Smell. The return rate is 0.0%.

When does demand for b complex 100 peak?

Demand peaks in Aug–Sep; the busiest month runs 1.5× the quietest.

What does it cost to enter the b complex 100 niche?

Listings span $8.28–$41.80; the average listing price is $17.99 (sweet spot $15–$100). The average incumbent carries 5,702 reviews — the moat a new listing must climb.

b complex 100

Worth a look

Shows low returns (0.0%), but strong incumbent ratings (4.7★) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Incredible12.0%

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

Avg price

Great$17.99

avg listing price — sweet spot $15–$100

Price range

Great$8.28–$41.80

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

Market size

Good$466K

$466K/yr · 215K searches

Competition

Okay59%

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

Brand share

Okay85%

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

Growth

Okay+5.9%

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

Review moat

Bad5,701.5

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, b complex 100 is a $466K/yr Amazon United States market (215K searches/yr). The top 5 brands hold 85% of demand. Demand peaks in Aug–Sep. Verdict: Worth a look — 54/100.

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

b complex 100 market data

Units sold / yr: 30K–40K; avg 1,250–1,500/product
Revenue / yr: $540K–$720K; units × avg price
Conversion rate: 12.0%
Avg BSR: #395
Page quality: 0%
Prime: 96%
Sponsored: 42%
Out of stock: 1.1%
Avg brand age: 90 months
Avg seller age: 159 days

Competition & brand share

The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 rising

Sellers

167

Top-5 brand share

85%

Top 20: 100%

Top-5 click share

59%

Top 20: 95%

Open market

12%

NOW Foods41%
Solgar25%
Bronson13%
Horbäach4%
Unique Bundle Store3%
MASON NATURAL3%
Open — no brand owns it (8 brands, 12%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +5.9% search growth over the last 90 days.

Peak months: Aug, Sep · busiest ÷ quietest = 1.5×

Open Trend

Top b complex 100 search terms

b100 complex vitamins29K/yr +12.4%7.9% conv.
b10021K/yr +12.2%10.5% conv.
now b complex21K/yr +1.4%7.9% conv.
b complex 10015K/yr +43.0%7.0% conv.
solgar b complex21K/yr -9.6%12.7% conv.
b 100 complex vitamins12K/yr +0.8%9.4% conv.
b-100 complex13K/yr -8.2%9.7% conv.
solgar b complex 10010K/yr -8.6%19.6% conv.
b100 complex9K/yr +24.2%7.2% conv.
b 1007K/yr +14.8%14.3% conv.

All search terms

Top b complex 100 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

NOW Foods Supplements Vitamin B-100 Energy Production* Nervous System Health* 100 Veg Capsules

NOW Foods$13.084.7★5,139 rev

Solgar B-Complex 100 100 Vegetable Capsules - Nervous System Support - Supports Energy Metabolism - Non-GMO Vegan Gluten Free Dairy Free Kosher - 100 Servings

Solgar$15.324.7★17,312 rev

Bronson Super B100 Vitamin B Complex Sustained Release Contains All B Vitamins (Vitamin B1 B2 B3 B6 B9 - Folic Acid B12) 120 Tablets

Bronson$14.934.6★3,017 rev

NOW Supplements Vitamin B-100 Energy Production* Nervous System Health* 250 Veg Capsules

NOW Foods$26.394.8★1,583 rev

Now Supplements Co-Enzyme B Complex with ALA and CoQ10 120 Veg Caps

NOW Foods$27.194.8★60 rev

Newest

by launch date

Unique Bundle Store Vitamin B-100 Complex 60 Tablets Timed Release B Complex Vitamins for Metabolism Support B100 Complex Vitamins B 100 Complex Supplement Gluten Free Formula (Pack of 1)

Unique Bundle Store$17.3312 rev

8mo ago

Now Supplements Co-Enzyme B Complex with ALA and CoQ10 120 Veg Caps

NOW Foods$27.1960 rev

1y ago

Bronson Super B100 Vitamin B Complex Sustained Release Contains All B Vitamins (Vitamin B1 B2 B3 B6 B9 - Folic Acid B12) 120 Tablets

Bronson$14.933,017 rev

2y ago

Bronson Super B100 Vitamin B Complex Sustained Release Contains All B Vitamins (Vitamin B1 B2 B3 B6 B9 - Folic Acid B12) 60 Tablets

Bronson$9.953,017 rev

2y ago

Horbach Vitamin B-100 Complex | 100% of Daily Value | 300 Tablets

Horbäach$12.98422 rev

4y ago

What buyers say about b complex 100

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

What buyers love

Vitamin21%

“I love this vitamin”

Quality-Overall20%

“Great quality, exactly as described, and arrived on time”

Energy Level7%

“Good energy”

Value For Money7%

“Good value”

Advertised Vs Actual Product4%

“Does the Job”

Ease Of Chewing/Swallowing3%

“easy and smooth to swallow, no issues”

Ease Of Use2%

“Ease of use”

Nutritional Content2%

“Healthy Choice”

Joint Pain2%

“I love this complex for my Multiple Sclerosis”

Dosage2%

“The tablets are easy to take”

What buyers complain about

Vitamin12%

“Smelly vitamins”

Dosage8%

“Too high of a dosage”

Smell8%

“This caused bright yellow urine that smelled very bad which indicated that the vitamin C was being eliminated via the urine”

Allergies7%

“SEVERE ALLERGIC REACTION”

Ingredients-Overall4%

“Ugh, I didnt realize this isnt a flush free formula and it has niacin in it, which gave me terrible flushing”

Taste-Overall4%

“taste are completely different”

Advertised Vs Actual Product4%

“It's false advertising”

Energy Level4%

“I can't tell a difference in energy”

Ease Of Chewing/Swallowing4%

“Hard to swallow”

Size-Overall3%

“although small”

Top return reasons

Value For Money33%

Vitamin22%

Advertised Vs Actual Product22%

Smell11%

Color11%

Common questions

Is b complex 100 profitable to sell on Amazon United States?: The niche generates $466K/yr across 24 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +5.9%. Flapen's verdict: Worth a look (54/100).
How competitive is the b complex 100 niche?: 14 brands and 167 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 85% of demand.
What do buyers complain about in b complex 100?: Top complaints mined from reviews: Vitamin, Dosage, Smell. The return rate is 0.0%.
When does demand for b complex 100 peak?: Demand peaks in Aug–Sep; the busiest month runs 1.5× the quietest.
What does it cost to enter the b complex 100 niche?: Listings span $8.28–$41.80; the average listing price is $17.99 (sweet spot $15–$100). The average incumbent carries 5,702 reviews — the moat a new listing must climb.