Is nac powder profitable to sell on Amazon United States?

The niche generates $177K/yr across 15 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -18.3%. Flapen's verdict: Worth a look (52/100).

How competitive is the nac powder niche?

9 brands and 23 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 90% of demand.

What do buyers complain about in nac powder?

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

When does demand for nac powder peak?

Demand peaks in Jan; the busiest month runs 1.9× the quietest.

What does it cost to enter the nac powder niche?

Listings span $16.52–$38.60; the average listing price is $24.90 (sweet spot $15–$100). The average incumbent carries 807 reviews — the moat a new listing must climb.

Nac Powder

Worth a look

Shows low returns (0.0%), but soft demand (-18.3% this quarter) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$24.90

avg listing price — sweet spot $15–$100

Price range

Incredible$16.52–$38.60

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

Conversion

Great10.8%

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

Review moat

Good806.8

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay63%

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

Market size

Okay$177K

$177K/yr · 66K searches

Brand share

Bad90%

top-5 brand share — brand-locked demand

Growth

Bad-18.3%

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

Is nac powder profitable on Amazon?

According to Flapen's Amazon United States niche tracking, nac powder is a $177K/yr Amazon United States market (66K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Jan. Verdict: Worth a look — 52/100.

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

nac powder market size & sales

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

Units sold / yr: 6K–8K; avg 500–750/product
Revenue / yr: $149K–$199K; units × avg price
Conversion rate: 10.8%
Avg BSR: #783
Page quality: 0%
Prime: 100%
Sponsored: 87%
Out of stock: 0.6%
Avg brand age: 59 months
Avg seller age: 179 days

Competition: brands, sellers & click share

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

Brands

9 rising

Sellers

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

63%

Top 20: 100%

Open market

BulkSupplements46%
Nutricost26%
NOW Foods9%
Best Naturals5%
Pure Encapsulations4%
Trace Minerals4%
Open — no brand owns it (3 brands, 6%)

nac powder demand & seasonality

Weekly Amazon search volume, last 98 weeks — -18.3% search growth over the last 90 days.

Peak months: Jan · busiest ÷ quietest = 1.9×

Open Trend

Top nac powder search terms shoppers use

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

nac powder44K/yr -13.7%8.4% conv.
nac powder supplement7K/yr -28.5%7.6% conv.
nac supplement powder7K/yr -43.5%9.2% conv.
nac bulk supplements4K/yr -5.1%16.1% conv.
bulk supplements nac4K/yr -6.8%18.0% conv.

All search terms

Top nac powder 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 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

BulkSupplements.com NAC Powder - N-Acetyl Cysteine 600mg NAC Supplement - Antioxidant Support Gluten Free - 600mg per Serving 417 Servings 250g (8.8 oz) (Pack of 1)

BulkSupplements$17.864.4★2,355 rev

Nutricost N-Acetyl L-Cysteine (NAC) Powder 250 Grams Gluten-Free GMO-Free

Nutricost$24.464.6★934 rev

Now Supplements NAC (N-Acetyl Cysteine) 600 mg Pure Powder Free Radical Protection* Cellular Health* Immune System Function* 4-Ounce (113 g)

NOW Foods$16.524.5★170 rev

BulkSupplements.com NAC Powder - N-Acetyl Cysteine 600mg NAC Supplement - Antioxidant Support Gluten Free - 600mg per Serving 833 Servings 500g 1.1 lbs (Pack of 1)

BulkSupplements$27.284.4★2,355 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

Newest

by launch date

SEAFLEX NAC 600mg Non-GMO Gluten Free Organic NAC Supplement N-Acetyl Cysteine Capsules with NAD+ for Cellular & Lung Health 300 Softgels

SEAFLEX$26.9062 rev

4mo ago

Nutricost NAC + Glycine Powder (250 Grams) Unflavored Gluten-Free

Nutricost$21.45119 rev

9mo ago

Best Naturals NAC (N-Acetyl L-Cysteine) Premium Pure Powder 1 LB Gluten Free.

Best Naturals$20.0135 rev

11mo 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

PURE ORIGINAL INGREDIENTS NAC N-Acetyl L-Cysteine Powder (8 oz) Lab Verified Always Pure No Fillers

PURE ORIGINAL INGREDIENTS$17.95126 rev

3y ago

What reviews say buyers love and hate about nac powder

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

What buyers love

Quality-Overall10%

“contains excellent quality ingredients”

Value For Money9%

“Totally worth it for me”

Nutritional Content6%

“Works very well for so many health issues”

Solubility5%

“The powder dissolves reasonably well”

Dosage5%

“Flexible dosing: Powder form allows precise adjustment of dosage based on individual needs”

Taste-Overall4%

“no weird aftertaste”

Ease Of Chewing/Swallowing4%

“The capsules are easy to take”

Ease Of Use3%

“Easy to use”

Vitamin3%

“Thank you for helping us vitamin addicts”

Immunity Booster3%

“helps my immune system”

What buyers complain about

Smell18%

“Horrible smell”

Taste-Overall16%

“The taste isnt good it's quite gross”

Dosage6%

“Less pills to get my dosage”

Flavor5%

“The glycine I've been taking was unflavored-as I assumed all glycine was”

Quality-Overall3%

“Bad quality control”

Sweetness3%

“it's very hard to get past the sickening artifical sweet tastetasteaa”

Solubility2%

“The crystals take forever to dissolve”

Ingredients-Overall2%

“Other ingredients: none”

Bitter2%

“bitter”

Sour2%

“So very sour >”

Top return reasons

Smell25%

Acid Regulator/Stomach Ache Relief25%

Vegan/Organic25%

Sour25%

Common nac powder questions

Is nac powder profitable to sell on Amazon United States?: The niche generates $177K/yr across 15 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -18.3%. Flapen's verdict: Worth a look (52/100).
How competitive is the nac powder niche?: 9 brands and 23 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 90% of demand.
What do buyers complain about in nac powder?: Top complaints mined from reviews: Smell, Taste-Overall, Dosage. The return rate is 0.0%.
When does demand for nac powder peak?: Demand peaks in Jan; the busiest month runs 1.9× the quietest.
What does it cost to enter the nac powder niche?: Listings span $16.52–$38.60; the average listing price is $24.90 (sweet spot $15–$100). The average incumbent carries 807 reviews — the moat a new listing must climb.