Is niacin 50mg profitable to sell on Amazon United States?

The niche generates $120K/yr across 23 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -19.4%. Flapen's verdict: Skip it (49/100).

How competitive is the niacin 50mg niche?

15 brands and 32 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 83% of demand.

What do buyers complain about in niacin 50mg?

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

When does demand for niacin 50mg peak?

Demand peaks in Nov–Dec; the busiest month runs 2.5× the quietest.

What does it cost to enter the niacin 50mg niche?

Listings span $8.71–$49.13; the average listing price is $22.31 (sweet spot $15–$100). The average incumbent carries 1,377 reviews — the moat a new listing must climb.

niacin 50mg

Skip it

Soft demand (-19.4% this quarter) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$22.31

avg listing price — sweet spot $15–$100

Price range

Great$8.71–$49.13

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

Conversion

Good5.5%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Review moat

Good1,377.39

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay83%

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

Competition

Okay63%

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

Market size

Okay$120K

$120K/yr · 97K searches

Growth

Bad-19.4%

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

According to Flapen's Amazon United States niche tracking, niacin 50mg is a $120K/yr Amazon United States market (97K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 49/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

niacin 50mg market data

Units sold / yr: 5K–6K; avg 250–500/product
Revenue / yr: $112K–$134K; units × avg price
Conversion rate: 5.5%
Avg BSR: #767
Page quality: 0%
Prime: 100%
Sponsored: 70%
Out of stock: 1.9%
Avg brand age: 85 months
Avg seller age: 154 days

Competition & brand share

The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.

Brands

15 rising

Sellers

Top-5 brand share

83%

Top 20: 100%

Top-5 click share

63%

Top 20: 97%

Open market

14%

Endurance Products43%
MIROLLA16%
Nutricost15%
NOW Foods4%
Golden Pharm4%
Mirrolla3%
Open — no brand owns it (9 brands, 14%)

Demand & seasonality

Weekly Amazon search volume, last 95 weeks — -19.4% search growth over the last 90 days.

Peak months: Nov, Dec · busiest ÷ quietest = 2.5×

Open Trend

Top niacin 50mg search terms

nicotinic acid29K/yr +7.6%5.8% conv.
nicotinic acid for hair15K/yr -43.6%6.4% conv.
acin7K/yr -36.4%0.0% conv.
nicotinic acid supplement4K/yr +3.1%5.9% conv.
enduracin 500mg extended release niacin 500 tab4K/yr +0.7%23.5% conv.
enduracin3K/yr -23.1%19.1% conv.
endur-acin 500mg extended release niacin2K/yr +1.6%23.3% conv.
endur-acin2K/yr -1.3%10.7% conv.
nicotinic2K/yr +156.8%0.6% conv.
acido nicotinico12K/yr -68.0%2.9% conv.

All search terms

Top niacin 50mg 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 23 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

ENDUR-ACIN - Niacin B3 - ER (Extended Release) 500 mg - Nicotinic Acid - Healthy Heart & Cholesterol Balance Supplement - Low-Flush High-Potency Niacin with 48 HR Timed-Release Matrix - 200 Tablets

Endurance Products$29.784.6★2,293 rev

NICOTINIC ACID FOR HAIR 10 ampules x 5ml (VITAMIN B3/NIACIN)/ STRENGTHENING THE HAIR QUALITY/HAIR GROWTH!

MIROLLA$23.934.4★477 rev

Nutricost Niacin (Vitamin B3) 100mg 240 Capsules - with Flushing Non-GMO Gluten Free

Nutricost$11.904.4★2,708 rev

Endurance Products Endur Plain Niacin (Nicotinic Acid) Heart Health & Healthy Cholesterol Balance Supplement Immediate-Release Formula Gluten Free 250mg (100 Tablets)

Endurance Products$16.274.4★624 rev

ENDUR-ACIN Niacin Supports Heart & Circulatory Function Extended Release Formula Gluten Free 500mg (100 Tablets)

Endurance Products$23.304.6★142 rev

Newest

by launch date

Nicotinic Acid Scalp Serum Ampoules (2-Pack 20 x 3ml) | Vitamin B3 (Niacin) Hair Thickening Tonic | Formula for Scalp Activation | Non-Greasy Leave-In Treatment for Thinning Hair | 60-Day Supply

Golden Pharm$25.4420 rev

5mo ago

Golden Pharm Nicotinic Acid and Niacinamide Scalp Serum - Thermo-Active Hair Thickening Treatment for Fine and Thinning Hair 3.4 Fl Oz

Golden Pharm$20.4835 rev

8mo ago

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$19.98270 rev

1y ago

Niacinex Niacin 500mg Extended Time Release 200 Tablets Minimal to No-Flush Vitamin B3 Supplement - Cholesterol Balance Nicotinic Acid Vegan cGMP made in the USA

Niacinex$26.33412 rev

2y ago

Global Healing Bio-Active Copper Supplement Cu1 - Cuprous Nicotinic Acid Helps Detox Body from Within - Supports Immune System & Red Blood Cell - Niacin Vitamin B3 Chelated Copper - 30 Capsules

Global Healing Center$49.13255 rev

4y ago

What buyers say about niacin 50mg

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

What buyers love

Quality-Overall18%

“overall Im happy with the results”

Advertised Vs Actual Product7%

“As advertised”

Value For Money5%

“Great value for the money”

Heart Health5%

“Increased HDL”

Ease Of Application5%

“Very good tip applicator”

Efficiency4%

“effective”

Ease Of Use4%

“Ease of use”

Vitamin3%

“Great choice for vitamins”

Hair Growth3%

“better hair growth over time”

Side Effects2%

“had no reaction at all”

What buyers complain about

Allergies21%

“Allergic reaction”

Side Effects14%

“Possible Effects”

Dosage9%

“I think the dosing is too high”

Skin Health3%

“My skin burned”

Vitamin3%

“If youre new to supplementing niacin do not buy this”

Heating2%

“I didn't feel any warmth while using this product”

Value For Money2%

“A huge waste of money”

Functionality-Overall2%

“probably reduces effectiveness”

Quality-Overall2%

“Inferior Quality”

Advertised Vs Actual Product2%

“It was my error to not read the description more carefully”

Top return reasons

Functionality-Overall18%

Side Effects12%

Dosage12%

Size-Overall6%

Calcium6%

Value For Money6%

Vitamin6%

Language Issues6%

Product Condition6%

Smell6%

Common questions

Is niacin 50mg profitable to sell on Amazon United States?: The niche generates $120K/yr across 23 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -19.4%. Flapen's verdict: Skip it (49/100).
How competitive is the niacin 50mg niche?: 15 brands and 32 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 83% of demand.
What do buyers complain about in niacin 50mg?: Top complaints mined from reviews: Allergies, Side Effects, Dosage. The return rate is 0.0%.
When does demand for niacin 50mg peak?: Demand peaks in Nov–Dec; the busiest month runs 2.5× the quietest.
What does it cost to enter the niacin 50mg niche?: Listings span $8.71–$49.13; the average listing price is $22.31 (sweet spot $15–$100). The average incumbent carries 1,377 reviews — the moat a new listing must climb.