--- title: "Nac — $0/yr Amazon SG Niche (2026) - Flapen" canonical_url: "https://flapen.com/research/sg/health-household-and-personal-care/nac" last_updated: "2026-08-08T11:52:12.355Z" locale: en meta: description: "Niche score 32/100 · $0/yr market · 4K searches/yr · $44.66 avg price. Doesn't clear our bar today. Data updated Jul 2026." "og:description": "Niche score 32/100 · $0/yr market · 4K searches/yr · $44.66 avg price. Doesn't clear our bar today. Data updated Jul 2026." "og:title": "Nac — $0/yr Amazon SG Niche (2026) - Flapen" --- # **nac** **Skip it** A small market ($0/yr) — this niche doesn't clear our bar today. Market size 0Growth 12Conversion 0Competition 0Returns 100Price range 85Avg price 95Brand share 0Review moat 76Quality gap 70 **Returns** **Incredible****0.0%** return rate — above 5% kills the launch gate **Avg price** **Incredible****$44.66** avg listing price — sweet spot $15–$100 **Price range** **Great****$11.00–$108.25** cheapest to priciest tracked listing — scored on the share inside $15–$100 **Review moat** **Great****478** avg incumbent reviews — the moat a new listing must climb **Quality gap** **Good****4.3★** avg incumbent rating — lower means beatable quality **Growth** **Bad****-26.6%** 90-day search growth — must beat 0% to launch **Market size** **Bad****$0** $0/yr · 4K searches **Conversion** **Bad****0.0%** search→purchase rate — share of searches ending in a sale **Competition** **Bad****100%** top-5 click share — a locked-up shelf **Brand share** **Bad****100%** top-5 brand share — brand-locked demand **Signals**[** Out of Stock**](https://flapen.com/research/niches?market=sg&signal=out_of_stock "OOS rate > 10%") According to Flapen's Amazon Singapore niche tracking, nac is a $0/yr Amazon Singapore market (4K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 32/100. Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology) ## **nac market data**
**Units sold / yr**
**0–100**
avg 0–100/product
**Revenue / yr**
**$0–$4K**
units × avg price
**Conversion rate**
**0.0%**
**Avg BSR**
**#521**
**Page quality**
**0%**
**Prime**
**0%**
**Sponsored**
**0%**
**Out of stock**
**8.6%**
**Avg brand age**
**100 months**
**Avg seller age**
**0 days**
## **Competition & brand share** The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack. **Brands** **4 **▲rising **Sellers** **21** **Top-5 brand share** **100%** Top 20: 100% **Top-5 click share** **100%** Top 20: 100% **Open market** **0%** - Nutricost39% - NutriJa22% - PURE ORIGINAL INGREDIENTS20% - Xymogen19% ## **Demand** Weekly Amazon search volume, last 46 weeks — -26.6% search growth over the last 90 days. 10060Spike '25Black Friday '25Spike '26Sep '25Oct '25Dec '25Feb '26Mar '26May '26Jun '26 [**Open Trend **](https://flapen.com/research/sg/health-household-and-personal-care/nac/trend) ## **Top nac 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. 0%10%$020%$030%$040%$0101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted All 4 tracked products in this niche — three views at once, no toggling. ### **Top sellers** by 90-day click share [1![Nutricost N-Acetyl L-Tyrosine (NALT) 350mg 120 Capsules - Gluten Free Non-GMO](https://m.media-amazon.com/images/I/41UH-Aa10vL.jpg)**Nutricost N-Acetyl L-Tyrosine (NALT) 350mg 120 Capsules - Gluten Free Non-GMO**Nutricost**$18.68**4.5★1,811 rev](https://www.amazon.sg/dp/B079NQ1XXW) [2![NutriJa NAC Powder 50 Grams](https://m.media-amazon.com/images/I/51IOPVsP5rL.jpg)**NutriJa NAC Powder 50 Grams**NutriJa**$11.00**0.0★0 rev](https://www.amazon.sg/dp/B0FDG8B4Z2) [3![PURE ORIGINAL INGREDIENTS N-Acetyl L-Cysteine (100 Capsules) Always Pure No Additives Or Fillers Lab Verified](https://m.media-amazon.com/images/I/41clIR75YEL.jpg)**PURE ORIGINAL INGREDIENTS N-Acetyl L-Cysteine (100 Capsules) Always Pure No Additives Or Fillers Lab Verified**PURE ORIGINAL INGREDIENTS**$40.71**3.6★17 rev](https://www.amazon.sg/dp/B0BHKSJRG2) [4![Xymogen NAC (120c)](https://m.media-amazon.com/images/I/315m3RgCLKL.jpg)**Xymogen NAC (120c)**Xymogen**$108.25**4.9★84 rev](https://www.amazon.sg/dp/B006UHUNJ0) ### **Newest** by launch date [![NutriJa NAC Powder 50 Grams](https://m.media-amazon.com/images/I/51IOPVsP5rL.jpg)**NutriJa NAC Powder 50 Grams**NutriJa**$11.00**0 rev1y ago](https://www.amazon.sg/dp/B0FDG8B4Z2) [![PURE ORIGINAL INGREDIENTS N-Acetyl L-Cysteine (100 Capsules) Always Pure No Additives Or Fillers Lab Verified](https://m.media-amazon.com/images/I/41clIR75YEL.jpg)**PURE ORIGINAL INGREDIENTS N-Acetyl L-Cysteine (100 Capsules) Always Pure No Additives Or Fillers Lab Verified**PURE ORIGINAL INGREDIENTS**$40.71**17 rev3y ago](https://www.amazon.sg/dp/B0BHKSJRG2) [![Xymogen NAC (120c)](https://m.media-amazon.com/images/I/315m3RgCLKL.jpg)**Xymogen NAC (120c)**Xymogen**$108.25**84 rev5y ago](https://www.amazon.sg/dp/B006UHUNJ0) [![Nutricost N-Acetyl L-Tyrosine (NALT) 350mg 120 Capsules - Gluten Free Non-GMO](https://m.media-amazon.com/images/I/41UH-Aa10vL.jpg)**Nutricost N-Acetyl L-Tyrosine (NALT) 350mg 120 Capsules - Gluten Free Non-GMO**Nutricost**$18.68**1,811 rev8y ago](https://www.amazon.sg/dp/B079NQ1XXW) ### **Trending** 90-day click momentum [![NutriJa NAC Powder 50 Grams](https://m.media-amazon.com/images/I/51IOPVsP5rL.jpg)**NutriJa NAC Powder 50 Grams**NutriJa**$11.00**0.0★**▲ 73%**](https://www.amazon.sg/dp/B0FDG8B4Z2) [![PURE ORIGINAL INGREDIENTS N-Acetyl L-Cysteine (100 Capsules) Always Pure No Additives Or Fillers Lab Verified](https://m.media-amazon.com/images/I/41clIR75YEL.jpg)**PURE ORIGINAL INGREDIENTS N-Acetyl L-Cysteine (100 Capsules) Always Pure No Additives Or Fillers Lab Verified**PURE ORIGINAL INGREDIENTS**$40.71**3.6★**▲ 24%**](https://www.amazon.sg/dp/B0BHKSJRG2) [![Xymogen NAC (120c)](https://m.media-amazon.com/images/I/315m3RgCLKL.jpg)**Xymogen NAC (120c)**Xymogen**$108.25**4.9★**— 7%**](https://www.amazon.sg/dp/B006UHUNJ0) [![Nutricost N-Acetyl L-Tyrosine (NALT) 350mg 120 Capsules - Gluten Free Non-GMO](https://m.media-amazon.com/images/I/41UH-Aa10vL.jpg)**Nutricost N-Acetyl L-Tyrosine (NALT) 350mg 120 Capsules - Gluten Free Non-GMO**Nutricost**$18.68**4.5★**▼ 23%**](https://www.amazon.sg/dp/B079NQ1XXW) ## **Common questions**
**Is nac profitable to sell on Amazon Singapore?**
The niche generates $0/yr across 4 tracked products. 90-day search growth is -26.6%. Flapen's verdict: Skip it (32/100).
**How competitive is the nac niche?**
4 brands and 21 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
**What does it cost to enter the nac niche?**
Listings span $11.00–$108.25; the average listing price is $44.66 (sweet spot $15–$100). The average incumbent carries 478 reviews — the moat a new listing must climb.
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