Is niacin extended release 500mg profitable to sell on Amazon United States?

The niche generates $35K/yr across 16 tracked products. 90-day search growth is +13.6%. Flapen's verdict: Skip it (49/100).

How competitive is the niacin extended release 500mg niche?

14 brands and 69 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 71% of demand.

What do buyers complain about in niacin extended release 500mg?

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

When does demand for niacin extended release 500mg peak?

Demand peaks in Apr; the busiest month runs 1.7× the quietest.

What does it cost to enter the niacin extended release 500mg niche?

Listings span $5.25–$32.45; the average listing price is $18.87 (sweet spot $15–$100). The average incumbent carries 2,715 reviews — the moat a new listing must climb.

niacin extended release 500mg

Skip it

A small market ($35K/yr) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$18.87

avg listing price — sweet spot $15–$100

Conversion

Great8.9%

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

Price range

Good$5.25–$32.45

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

Brand share

Good71%

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

Growth

Okay+13.6%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay2,714.56

avg incumbent reviews — the moat a new listing must climb

Competition

Okay70%

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

Market size

Bad$35K

$35K/yr · 21K searches

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, niacin extended release 500mg is a $35K/yr Amazon United States market (21K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Apr. Verdict: Skip it — 49/100.

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

niacin extended release 500mg market data

Units sold / yr: 2K–3K; avg 100–250/product
Revenue / yr: $38K–$47K; units × avg price
Conversion rate: 8.9%
Avg BSR: #361
Page quality: 0%
Prime: 100%
Sponsored: 81%
Out of stock: 5.4%
Avg brand age: 133 months
Avg seller age: 180 days

Competition & brand share

The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 falling

Sellers

Top-5 brand share

71%

Top 20: 100%

Top-5 click share

70%

Top 20: 100%

Open market

22%

Dr. Berg Nutritionals20%
NOW Foods19%
Endurance Products12%
Doctor's BEST11%
Niacinex10%
Nutricost7%

Demand & seasonality

Weekly Amazon search volume, last 100 weeks — +13.6% search growth over the last 90 days.

Peak months: Apr · busiest ÷ quietest = 1.7×

Open Trend

Top niacin extended release 500mg search terms

niacin extended release 500mg6K/yr +33.3%10.0% conv.
extended release niacin 500mg4K/yr +49.0%8.1% conv.
extended release niacin4K/yr -12.3%7.8% conv.
niacin 500mg extended release3K/yr -4.0%7.6% conv.
slow release niacin3K/yr -10.3%11.8% conv.

All search terms

Top niacin extended release 500mg 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

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

Doctors Best Niacin 500 mg Extended Release Supplement for Men & Women - Minimizes Skin Flush Niacin as Nicotinic Acid 500mg Cardiovascular Health Support Gluten Free Vegan Non GMO - 120 Tablets

Doctor's BEST$15.844.6★2,755 rev

ENDUR-ACIN - Niacin B3 - ER (Extended Release) 500 mg (200 ct)

Endurance Products$29.784.6★2,297 rev

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$26.534.4★419 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

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$26.53419 rev

2y ago

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

Nutricost$14.889,951 rev

10y ago

What buyers say about niacin extended release 500mg

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

What buyers love

Quality-Overall25%

“Amazing quality”

Value For Money12%

“Reasonable price”

Advertised Vs Actual Product7%

“As advertised”

Vitamin6%

“Great choice for vitamins”

Efficiency6%

“Very effective”

Heart Health5%

“Great supplement for controlling your cholesterol”

Side Effects3%

“Zero side effects”

Ease Of Chewing/Swallowing3%

“The capsules are easy to take”

Energy Level3%

“positive improvement in both my energy levels”

Sleep Quality2%

“Im also sleeping much better”

What buyers complain about

Allergies26%

“Allergic Reaction”

Side Effects19%

“The side effects are horrible”

Dosage7%

“I think the dosing is too high”

Functionality-Overall6%

“Not controlled release, causes flushing”

Skin Health5%

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

Vitamin3%

“This supplement is very expensive”

Value For Money3%

“A very costly mistake”

Ingredients-Overall3%

“This product is horrible”

Advertised Vs Actual Product2%

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

Itch Relief2%

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

Top return reasons

Dosage20%

Vitamin20%

Size-Overall10%

Calcium10%

Product Condition10%

Fever Relief10%

Side Effects10%

Value For Money10%

Common questions

Is niacin extended release 500mg profitable to sell on Amazon United States?: The niche generates $35K/yr across 16 tracked products. 90-day search growth is +13.6%. Flapen's verdict: Skip it (49/100).
How competitive is the niacin extended release 500mg niche?: 14 brands and 69 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 71% of demand.
What do buyers complain about in niacin extended release 500mg?: Top complaints mined from reviews: Allergies, Side Effects, Dosage. The return rate is 0.0%.
When does demand for niacin extended release 500mg peak?: Demand peaks in Apr; the busiest month runs 1.7× the quietest.
What does it cost to enter the niacin extended release 500mg niche?: Listings span $5.25–$32.45; the average listing price is $18.87 (sweet spot $15–$100). The average incumbent carries 2,715 reviews — the moat a new listing must climb.