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Nac Supplement

Maybe

Returns run at only 0.0% of orders. But the top 5 products take 81% of clicks, so Nac Supplement is a Maybe.

Flapen Score
52
52 / 100
Top 33% of 2,035 Health & Personal Care niches · +4 vs the category median of 48
Market size
£760K/yr440K searches / yr
90-day growth
-16.5%search demand this quarter
Competition
81%top-5 click share · 10 brands · 26 sellers

Flapen Score

Nac Supplement against its category

The dotted line is the Health & Personal Care average. Past it, Nac Supplement is stronger. Inside it, weaker.

52Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Nac Supplement market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Nac Supplement 440K times last year and spent an estimated £760K. The top 5 brands take 81% of clicks. Flapen scores it 52 out of 100, a Maybe.

01 · Demand

12.8% of searches ended in a purchase last week.

Shoppers searched for this 440K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 12.8% of those searches ended in a purchase. Searches in the last 90 days moved -16.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated £760K a year.

Searches, last 12 months
440K
Growth, 90 days vs prior 90
-16.5%
Conversion, latest week
12.8%
Market size, estimated
£760Ka year
Peak month
January1.5× the quietest month
Top search term
nac supplement185K searches a year

02 · Price

A sale here is worth £13.53.

Listings sell for £13.53 on average, from £6.97 to £32.00. Amazon reports units sold in ranges. This niche sold 50K to 60K a year. The average listing sells 3,000 to 4,000 of them. At £13.53 that is £41K to £54K a year per listing.

Average price
£13.53under the $15 to $100 sweet spot
Price range
£6.97–£32.00
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
50K–60K
Units per listing a year
3,000–4,000
Revenue per listing a year
£41K–£54K
Returns
0.0%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

80% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 1.7% of listings are out of stock. The average listing ranks #8 within Amino Acids. It carries 1,607 reviews at 4.49 stars, so a new listing needs social proof before a better product.

Sponsored listings
80%
Prime listings
100%
Out of stock, average day
1.7%
Average rank
#8in Amino Acids
Average rating
4.49 starsAmazon United Kingdom average 4.36 stars
Average reviews
1,607per listing
Listings tracked
10

04 · Newcomers

Brands here are settling in.

The brands on the shelf have sold for 47 months on average, so the names here are settling in.

Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
47 months

Products

Top Nac Supplement products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Competition

Competition: brands, sellers & click share

The top 5 products take 81% of clicks. A locked shelf that new listings rarely crack.

£0£114K£228K£342K£456K1001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

10 falling

Sellers

26

Top-5 brand share

81%

Top 20: 100%

Top-5 click share

81%

Top 20: 100%

Open market

14%

  • NEW LEAF PRODUCTS40%
  • PH PROWISE Healthcare17%
  • WeightWorld9%
  • Solgar8%
  • Multivita7%
  • VitaBright5%
  • Open — no brand owns it (4 brands, 14%)

Demand

Nac Supplement search demand

Weekly searches over the year, seasonality beneath. Pick a range.

10K6KBlack Friday '24Spike '25Black Friday '25Holiday '25Spike '26DecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Search terms

Top Nac Supplement search terms shoppers use

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

  • nac supplement185K/yr
  • nac158K/yr
  • augmented nac11K/yr
  • nac n-acetyl-cysteine 600mg18K/yr
  • nac 600mg10K/yr
  • n acetyl cysteine13K/yr
  • n-acetylcysteine10K/yr
  • n-acetyl-cysteine nutritional supplements8K/yr
  • l cysteine3K/yr
  • n-acetyl cysteine6K/yr

Reviews and returns

What reviews say buyers love and hate about Nac Supplement

What buyers praise, what they complain about and why they send it back, from the reviews.

Complain

Smell22%−0.15

Smells like plastic

smell foul and make me fart

Horrible smell

Dosage6%

that would be a huge 2400mg dose

But does not treat overdose of that has to be emergency iv

Misleading dosage information

Quality-Overall5%+1.56

Poor quality

Poor quality product

My quality of life is noticeably worse when I forget NAC exists

Ingredients-Overall5%−0.02

has some additives

What are these made of 'Flour'

Unfortunately it does have more additives than my usual brand

Heart Health4%−0.02

seem to be getting heart burn

The only thing I got from this product was heartburn

Love

Quality-Overall22%+1.56

Good product; Arrived in very good condition, happy about quality and price, thank you Amazon

Good quality product

Excellent product, good ratio quality-price

Value For Money10%+0.34

worth the money

Great value for money

Good value

Breathability7%+0.23

Breath better

Helps with breathing

I think it really helps with your breathing

Vitamin7%+0.42

Great quality supplement

Best supplement for me

I can recommend this Suppliment

Dosage4%

with a straightforward 600mg serving

its worth checking the dosage suits your needs

Really well dosed and good quality

FAQ

Common Nac Supplement questions

Answered from the same tracked data.