Is nac 1000mg profitable to sell on Amazon United States?

The niche generates $194K/yr across 14 tracked products. 90-day search growth is -8.6%. Flapen's verdict: Skip it (48/100).

How competitive is the nac 1000mg niche?

10 brands and 40 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 86% of demand.

What do buyers complain about in nac 1000mg?

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

When does demand for nac 1000mg peak?

Demand is steady year-round — the busiest month runs 1.7× the quietest.

What does it cost to enter the nac 1000mg niche?

Listings span $8.22–$53.64; the average listing price is $22.55 (sweet spot $15–$100). The average incumbent carries 3,759 reviews — the moat a new listing must climb.

Nac 1000mg

Skip it

Soft demand (-8.6% this quarter) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Incredible12.2%

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

Avg price

Great$22.55

avg listing price — sweet spot $15–$100

Price range

Great$8.22–$53.64

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

Market size

Okay$194K

$194K/yr · 70K searches

Brand share

Okay86%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Review moat

Okay3,758.93

avg incumbent reviews — the moat a new listing must climb

Competition

Bad72%

top-5 click share — a locked-up shelf

Growth

Bad-8.6%

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

Is nac 1000mg profitable on Amazon?

According to Flapen's Amazon United States niche tracking, nac 1000mg is a $194K/yr Amazon United States market (70K searches/yr). The top 5 brands hold 86% of demand. Verdict: Skip it — 48/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

nac 1000mg market size & sales

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

Units sold / yr: 10K–13K; avg 500–750/product
Revenue / yr: $226K–$282K; units × avg price
Conversion rate: 12.2%
Avg BSR: #97
Page quality: 0%
Prime: 100%
Sponsored: 79%
Out of stock: 1.4%
Avg brand age: 60 months
Avg seller age: 183 days

Competition: brands, sellers & click share

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.

Brands

10 falling

Sellers

Top-5 brand share

86%

Top 20: 100%

Top-5 click share

72%

Top 20: 100%

Open market

11%

NOW Foods49%
Nutricost16%
BulkSupplements13%
Pure Encapsulations4%
Deal Supplement4%
Double Wood Supplements3%
Open — no brand owns it (4 brands, 11%)

nac 1000mg demand & seasonality

Weekly Amazon search volume, last 98 weeks — -8.6% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.7×

Open Trend

Top nac 1000mg search terms shoppers use

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

nac 1000mg33K/yr -10.6%12.3% conv.
nac supplement 1000mg14K/yr -4.5%9.9% conv.
nac 10005K/yr -7.5%13.6% conv.
n acetyl cysteine 1000mg5K/yr -3.7%7.8% conv.
nac tablets7K/yr -18.0%4.3% conv.
nac 1000mg capsules3K/yr +2.3%12.9% conv.
nac 1000 mg3K/yr -10.6%12.1% conv.

All search terms

Top nac 1000mg 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 14 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

NOW Foods Supplements NAC (N-Acetyl-Cysteine) 1 000 mg Free Radical Protection* 120 Tablets

NOW Foods$18.364.6★14,857 rev

BulkSupplements.com NAC 1000 mg Capsules - N-Acetyle Cysteine 1000mg NAC Supplement NAC1000mg - NAC Capsules Gluten Free - 2 Capsules per Serving 180-Day Supply 360 Capsules

BulkSupplements$20.654.5★1,055 rev

Now Foods Supplements NAC (N-Acetyl-Cysteine) 1 000 mg Free Radical Protection* 60 Tablets

NOW Foods$10.924.6★14,857 rev

Nutricost N-Acetyl L-Cysteine (NAC) 1000mg 240 Vegan Tablets Gluten-Free

Nutricost$22.434.4★210 rev

Nutricost N-Acetyl L-Cysteine (NAC) 1000mg 120 Vegan Tablets Gluten Free

Nutricost$17.274.6★97 rev

Newest

by launch date

Nutricost N-Acetyl L-Cysteine (NAC) 1000mg 240 Vegan Tablets Gluten-Free

Nutricost$22.43210 rev

1y ago

Nutricost N-Acetyl L-Cysteine (NAC) 1000mg 120 Vegan Tablets Gluten Free

Nutricost$17.2797 rev

1y ago

NaturaLife Labs N-Acetyl-L-Cysteine (NAC) 1600 mg 100 Capsules - Vegan Non-GMO & Gluten-Free

NaturaLife Labs$15.68754 rev

2y ago

BulkSupplements.com NAC 1000 mg Capsules - N-Acetyle Cysteine 1000mg NAC Supplement NAC1000mg - NAC Capsules Gluten Free - 2 Capsules per Serving 180-Day Supply 360 Capsules

BulkSupplements$20.651,055 rev

3y ago

Carlyle NAC Supplement N-Acetyl Cysteine 1000mg | 80 Capsules

Carlyle$8.22489 rev

3y ago

What reviews say buyers love and hate about nac 1000mg

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

What buyers love

Quality-Overall21%

“The quality is always consistent”

Value For Money11%

“Fair price”

Advertised Vs Actual Product6%

“As advertised”

Vitamin6%

“Good Supplement”

Efficiency4%

“Appears to be effective”

Nutritional Content3%

“This has easily been the most helpful supplement I've ever taken”

Dosage3%

“I like this dosage”

Ease Of Chewing/Swallowing2%

“my 11 year-old has no problem swallowing it”

Cough Relief2%

“I'm definitely coughing less”

Ingredients-Overall2%

“Its 600 mg per capsule, non-GMO, gluten-free, and made in a GMP-compliant facility, so it seems like a clean, straightforward product”

What buyers complain about

Smell27%

“Horrible smell”

Taste-Overall6%

“Disgusting, I tried a couple and the taste is horrific”

Size-Overall5%

“They are small capsules”

Side Effects5%

“I stopped having this awful headache”

Dosage4%

“they didn't have the mg dosage needed to truly maintain a healthy system”

Functionality-Overall4%

“This product is ineffective”

Quality-Overall3%

“Bad quality control”

Ease Of Chewing/Swallowing3%

“A pain to swallow - literally”

Heart Health2%

“It did however give me terrible heart burn”

Acid Regulator/Stomach Ache Relief2%

“Congested”

Top return reasons

Functionality-Overall27%

Advertised Vs Actual Product27%

Side Effects9%

Size-Overall9%

Smell9%

Dosage9%

Acid Regulator/Stomach Ache Relief9%

Common nac 1000mg questions

Is nac 1000mg profitable to sell on Amazon United States?: The niche generates $194K/yr across 14 tracked products. 90-day search growth is -8.6%. Flapen's verdict: Skip it (48/100).
How competitive is the nac 1000mg niche?: 10 brands and 40 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 86% of demand.
What do buyers complain about in nac 1000mg?: Top complaints mined from reviews: Smell, Taste-Overall, Size-Overall. The return rate is 0.0%.
When does demand for nac 1000mg peak?: Demand is steady year-round — the busiest month runs 1.7× the quietest.
What does it cost to enter the nac 1000mg niche?: Listings span $8.22–$53.64; the average listing price is $22.55 (sweet spot $15–$100). The average incumbent carries 3,759 reviews — the moat a new listing must climb.