Is niacin profitable to sell on Amazon United States?

The niche generates $1.3M/yr across 16 tracked products. 90-day search growth is -4.6%. Flapen's verdict: Worth a look (57/100).

How competitive is the niacin niche?

11 brands and 61 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 81% of demand.

What do buyers complain about in niacin?

Top complaints mined from reviews: Allergies, Side Effects, Dosage. The return rate is 0.0%.

When does demand for niacin peak?

Demand is steady year-round — the busiest month runs 1.2× the quietest.

What does it cost to enter the niacin niche?

Listings span $6.23–$25.01; the average listing price is $14.65 (sweet spot $15–$100). The average incumbent carries 4,090 reviews — the moat a new listing must climb.

Niacin

Worth a look

Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Great11.0%

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

Market size

Great$1.3M

$1.3M/yr · 817K searches

Avg price

Good$14.65

avg listing price — sweet spot $15–$100

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Price range

Good$6.23–$25.01

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

Brand share

Okay81%

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

Competition

Okay68%

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

Review moat

Bad4,089.88

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-4.6%

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

Is niacin profitable on Amazon?

According to Flapen's Amazon United States niche tracking, niacin is a $1.3M/yr Amazon United States market (817K searches/yr). The top 5 brands hold 81% of demand. Verdict: Worth a look — 57/100.

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

niacin market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 100K–125K; avg 5,000–6,000/product
Revenue / yr: $1.5M–$1.8M; units × avg price
Conversion rate: 11.0%
Avg BSR: #452
Page quality: 0%
Prime: 100%
Sponsored: 69%
Out of stock: 0.0%
Avg brand age: 89 months
Avg seller age: 147 days

Competition: brands, sellers & click share

The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 flat

Sellers

Top-5 brand share

81%

Top 20: 100%

Top-5 click share

68%

Top 20: 100%

Open market

14%

Nutricost30%
Nature's Bounty26%
NOW Foods10%
Dr. Berg Nutritionals8%
Life Extension6%
Micro Ingredients6%
Open — no brand owns it (5 brands, 14%)

niacin demand & seasonality

Weekly Amazon search volume, last 102 weeks — -4.6% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.2×

Open Trend

Top niacin search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

niacin498K/yr -5.0%11.0% conv.
niacin 500mg96K/yr -4.9%12.2% conv.
vitamin b3 niacin30K/yr -9.9%5.8% conv.
b3 niacin24K/yr +4.7%5.8% conv.
niacin supplement40K/yr -38.7%6.6% conv.
niacin b319K/yr +22.3%6.8% conv.
niacina22K/yr -1.8%1.9% conv.
niacin vitamin b313K/yr +45.3%5.7% conv.
niacin flush20K/yr -8.6%5.8% conv.
niacin extended release 500mg6K/yr +33.3%7.2% conv.

All search terms

Top niacin products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

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

Natures Bounty Niacin 500mg Flush Free Cellular Energy Support Supports Nervous System Health 120 Capsules

Nature's Bounty$15.824.7★11,937 rev

Nutricost Niacin (Vitamin B3) 500mg 240 Capsules with Flushing GMO-Free

Nutricost$14.884.2★9,951 rev

Nutricost Niacin (Vitamin B3) 100mg 240 Capsules with Flushing

Nutricost$11.944.5★2,737 rev

Dr. Berg Highly-Potent Niacin 500 mg Now Only 125 mg per Capsule for Niacin Flush Tolerance Building Gradually Increase to 500mg a Day Vitamin B3 for Heart Brain & Energy Support 100 Capsules

Dr. Berg Nutritionals$19.984.5★294 rev

NOW Foods Supplements Niacin (Vitamin B-3) 500 mg Sustained Release Nutritional Health 250 Tablets

NOW Foods$14.064.3★4,833 rev

Newest

by launch date

Dr. Berg Highly-Potent Niacin 500 mg Now Only 125 mg per Capsule for Niacin Flush Tolerance Building Gradually Increase to 500mg a Day Vitamin B3 for Heart Brain & Energy Support 100 Capsules

Dr. Berg Nutritionals$19.98294 rev

1y ago

Micro Ingredients Niacin 500mg Per Serving 400 Capsules | Flush Free B3 Vitamins | Double Strength Essential B Vitamin Supplement | Skin Care Health & Energy Support | Non-GMO Gluten Free

Micro Ingredients$14.62537 rev

1y ago

Vitamatic Niacin (Vitamin B3) 500mg 240 Tablets - Non-GMO & Gluten Free

Vitamatic$9.86322 rev

2y ago

BulkSupplements.com Niacin Capsules - Niacin Supplement Vitamin B3 - Gluten Free 1 Capsule per Serving 365 Capsules (Pack of 1)

BulkSupplements$18.54448 rev

3y ago

Nutricost Niacin (Vitamin B3) 100mg 240 Capsules with Flushing

Nutricost$11.942,737 rev

5y ago

What reviews say buyers love and hate about niacin

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

What buyers love

Quality-Overall23%

“no complaints so far”

Value For Money12%

“Reasonable price”

Advertised Vs Actual Product10%

“As advertised”

Vitamin7%

“Great supplement”

Efficiency6%

“effective”

Heart Health4%

“Lowered my cholesterol”

Side Effects3%

“had no reaction at all”

Sleep Quality3%

“Im also sleeping much better”

Dosage2%

“The dosage is fine”

Ease Of Chewing/Swallowing2%

“The capsules are easy to take”

What buyers complain about

Allergies29%

“Allergic Reaction”

Side Effects14%

“The side effects are horrible”

Dosage8%

“I think the dosing is too high”

Functionality-Overall6%

“Not controlled release, causes flushing”

Vitamin5%

“Vitamin B3. Took for a month and half”

Skin Health4%

“Turned red, felt like my skin is sun burned”

Itch Relief3%

“Well, for me, I break out into an itch really bad”

Quality-Overall2%

“Inferior Quality”

Heart Health2%

“Because I can not take cholesterol prescription medicine due to allergic reactions my heart Dr”

Color2%

“Red”

Top return reasons

Dosage18%

Vitamin12%

Advertised Vs Actual Product12%

Value For Money12%

Side Effects6%

Safety Standards6%