- Flapen Score
- 33 / 100Ranks 177 of 184 Health niches · −15 vs the category median of 4833
- Market size
- $85K/yr19K searches / yr
- 90-day growth
- -35.5%search demand this quarter
- Competition
- 81%top-5 click share · 9 brands · 21 sellers
Flapen Score
Nac against its category
The dotted line is the Health average. Past it, Nac is stronger. Inside it, weaker.
Market
The Nac market on Amazon at a glance
Shoppers on Amazon Saudi Arabia searched for Nac 19K times last year and spent an estimated $85K. The top 5 brands take 86% of clicks. Flapen scores it 33 out of 100, a Fail.
01 · Demand
An estimated 3.8% of those searches ended in a purchase.
Shoppers searched for this 19K times in the last 12 months. That counts every search on Amazon Saudi Arabia for this niche's terms. An estimated 3.8% of those searches ended in a purchase. Searches in the last 90 days moved -35.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $85K a year.
- Searches, last 12 months
- 19K
- Growth, 90 days vs prior 90
- -35.5%
- Conversion, latest week
- 3.8%
- Market size, estimated
- $85Ka year
- Top search term
- nac13K searches a year
02 · Price
A sale here is worth $121.51.
Listings sell for $121.51 on average, from $66.87 to $248.08. Amazon reports units sold in ranges. This niche sold 750 to 1K a year. The average listing sells 0 to 100 of them. At $121.51 that is $0 to $12K a year per listing.
- Average price
- $121.51above the $15 to $100 sweet spot
- Price range
- $66.87–$248.08
- Amazon Saudi Arabia median price
- $69.41across 1,863 niches
- Units sold a year
- 750–1K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$12K
- Returns
- 0.6%of orders · Amazon Saudi Arabia median 1.8%
03 · Entry bar
The bar here is reviews.
10% of listings pay for placement with sponsored ads. 80% ship with Prime. On an average day, 9.5% of listings are out of stock. The average listing ranks #115 within Health. It carries 2,456 reviews at 4.64 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 10%
- Prime listings
- 80%
- Out of stock, average day
- 9.5%
- Average rank
- #115in Health
- Average rating
- 4.64 starsAmazon Saudi Arabia average 4.21 stars
- Average reviews
- 2,456per listing
- Listings tracked
- 10
04 · Newcomers
0 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 57 months on average, so the names here are settling in.
- Launched, last 12 months
- 1
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 57 months
Products
Top Nac products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 25, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
NOW Supplements NAC (N-Acetyl-Cysteine) 1 000 mg Free Radical Protection* 60 Tablets
- Price
- $90.64
- Rating
- 4.6/5
- Reviews
- 658
- Age
- 1y ago

N-Acetyl-L-Cysteine 600 mg 60 Vegetarian Capsules
- Price
- $72.53
- Rating
- 4.6/5
- Reviews
- 7,518
- Age
- 13y ago

Nutricost N-Acetyl L-Cysteine (NAC) 600mg 180 Capsules - Non-GMO Gluten Free
- Price
- $117.80
- Rating
- 4.6/5
- Reviews
- 9,919
- Age
- 3y ago

Doctors Best Nac Detox Regulators Veggie Capsules (60 Pieces)
- Price
- $66.87
- Rating
- 4.6/5
- Reviews
- 1,848
- Age
- 13y ago

NOW Foods NAC 600 mg 250 Capsules
- Price
- $139.27
- Rating
- 5.0/5
- Reviews
- 3
- Age
- 10mo ago
Trending
estimated 90-day click momentum
NAC Supplement 1200mg Per Serving | 240 Capsules N-Acetyl Cysteine with Quercetin | Double Strength - Support for Immune Liver & Lung Health
- Price
- $234.88
- Rating
- 4.6/5
- Reviews
- 1,222
- Age
- 1y ago

Oladole Natural N-Acetyl Cysteine (NAC) 1000mg - 120 Tablets
- Price
- $79.35
- Rating
- 4.5/5
- Reviews
- 50
- Age
- 3y ago

NOW Supplements NAC (N-Acetyl-Cysteine) 1 000 mg Free Radical Protection* 60 Tablets
- Price
- $90.64
- Rating
- 4.6/5
- Reviews
- 658
- Age
- 1y ago

Thorne Research - NAC (Formerly Cysteplus) - N-Acetylcysteine for Liver Support Detoxification and Immune Function - 90 Capsules
- Price
- $248.08
- Rating
- 4.7/5
- Reviews
- 2,442
- Age
- 4y ago

N-Acetyl-L-Cysteine 600 mg 60 Vegetarian Capsules
- Price
- $72.53
- Rating
- 4.6/5
- Reviews
- 7,518
- Age
- 13y ago
Newest
by launch date
NOW Foods NAC 600 mg 250 Capsules
- Price
- $139.27
- Rating
- 5.0/5
- Reviews
- 3
- Age
- 10mo ago

NOW Supplements NAC (N-Acetyl-Cysteine) 1 000 mg Free Radical Protection* 60 Tablets
- Price
- $90.64
- Rating
- 4.6/5
- Reviews
- 658
- Age
- 1y ago

NAC Supplement 1200mg Per Serving | 240 Capsules N-Acetyl Cysteine with Quercetin | Double Strength - Support for Immune Liver & Lung Health
- Price
- $234.88
- Rating
- 4.6/5
- Reviews
- 1,222
- Age
- 1y ago

Oladole Natural N-Acetyl Cysteine (NAC) 1000mg - 120 Tablets
- Price
- $79.35
- Rating
- 4.5/5
- Reviews
- 50
- Age
- 3y ago

Nutricost N-Acetyl L-Cysteine (NAC) 600mg 180 Capsules - Non-GMO Gluten Free
- Price
- $117.80
- Rating
- 4.6/5
- Reviews
- 9,919
- Age
- 3y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 81% of clicks. A locked shelf that new listings rarely crack.
Brands
9 rising
Sellers
21
Est. top-5 brand share
86%
Top 20: 100%
Est. top-5 click share
81%
Top 20: 100%
Open market
10%
- NOW31%
- Life Extension24%
- Nutricost15%
- Doctor's Best10%
- Jarrow Formulas6%
- Natural Factors4%
- Open — no brand owns it (3 brands, 10%)
Demand
Nac search demand
Weekly searches over the year. Pick a range.
Reviews and returns
What reviews say buyers love and hate about Nac
We read the reviews and the return reasons for every product selling here.
“Price is too high”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
6 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Nac questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data






