---
title: "Nac 1000mg — $16K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/nac-1000mg"
last_updated: "2026-08-12T07:52:33.723Z"
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description: "Amazon product research for nac 1000mg: $16K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for nac 1000mg: $16K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Nac 1000mg — $16K/mo Amazon US Product Research (2026)"
---
# **Nac 1000mg**
**Skip it**
Soft demand (-8.6% this quarter) — this niche doesn't clear our bar today.
Market size 38Growth 21Conversion 95Competition 24Returns 100Price range 83Avg price 94Brand share 32Review moat 27Quality gap 30
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.2%**
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**
**Okay****86%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****3,758.93**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****72%**
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 ~~](https://flapen.com/research/methodology)
## **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**
**40**
**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.
2K1KSpike '24Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/health-household/nac-1000mg/trend)
## **Top nac 1000mg search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **nac 1000mg**33K/yr-10.6%12.3% conv. - **nac supplement 1000mg**14K/yr-4.5%9.9% conv. - **nac 1000**5K/yr-7.5%13.6% conv. - **n acetyl cysteine 1000mg**5K/yr-3.7%7.8% conv. - **nac tablets**7K/yr-18.0%4.3% conv. - **nac 1000mg capsules**3K/yr+2.3%12.9% conv. - **nac 1000 mg**3K/yr-10.6%12.1% conv. [**All search terms **](https://flapen.com/research/us/health-household/nac-1000mg/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.
0%10%$19K20%$39K30%$58K40%$77K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**NOW Foods Supplements NAC (N-Acetyl-Cysteine) 1 000 mg Free Radical Protection* 120 Tablets**NOW Foods**$18.36**4.6★14,857 rev](https://www.amazon.com/dp/B00KT3H13C) [2**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**$20.65**4.5★1,055 rev](https://www.amazon.com/dp/B0CCX27QHY) [3**Now Foods Supplements NAC (N-Acetyl-Cysteine) 1 000 mg Free Radical Protection* 60 Tablets**NOW Foods**$10.92**4.6★14,857 rev](https://www.amazon.com/dp/B0C63L1VQ6) [4**Nutricost N-Acetyl L-Cysteine (NAC) 1000mg 240 Vegan Tablets Gluten-Free**Nutricost**$22.43**4.4★210 rev](https://www.amazon.com/dp/B0DVBL9Y9V) [5**Nutricost N-Acetyl L-Cysteine (NAC) 1000mg 120 Vegan Tablets Gluten Free**Nutricost**$17.27**4.6★97 rev](https://www.amazon.com/dp/B0DVBCTDQ6)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nutricost N-Acetyl L-Cysteine (NAC) 1000mg 240 Vegan Tablets Gluten-Free**Nutricost**$22.43**210 rev1y ago](https://www.amazon.com/dp/B0DVBL9Y9V) [**Nutricost N-Acetyl L-Cysteine (NAC) 1000mg 120 Vegan Tablets Gluten Free**Nutricost**$17.27**97 rev1y ago](https://www.amazon.com/dp/B0DVBCTDQ6) [**NaturaLife Labs N-Acetyl-L-Cysteine (NAC) 1600 mg 100 Capsules - Vegan Non-GMO & Gluten-Free**NaturaLife Labs**$15.68**754 rev2y ago](https://www.amazon.com/dp/B0CW8QXQD7) [**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**$20.65**1,055 rev3y ago](https://www.amazon.com/dp/B0CCX27QHY) [**Carlyle NAC Supplement N-Acetyl Cysteine 1000mg | 80 Capsules**Carlyle**$8.22**489 rev3y ago](https://www.amazon.com/dp/B0C6MZ8JH4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nutricost N-Acetyl L-Cysteine (NAC) 1000mg 120 Vegan Tablets Gluten Free**Nutricost**$17.27**4.6★**▲ 63%**](https://www.amazon.com/dp/B0DVBCTDQ6) [**Nutricost N-Acetyl L-Cysteine (NAC) 1000mg 240 Vegan Tablets Gluten-Free**Nutricost**$22.43**4.4★**▲ 42%**](https://www.amazon.com/dp/B0DVBL9Y9V) [**NaturaLife Labs N-Acetyl-L-Cysteine (NAC) 1600 mg 100 Capsules - Vegan Non-GMO & Gluten-Free**NaturaLife Labs**$15.68**4.7★**▲ 29%**](https://www.amazon.com/dp/B0CW8QXQD7) [**PROTOCOL FOR LIFE BALANCE NAC N-Acetyl Cysteine 1000mg - Glutathione Production & Respiratory Function - 120 Tabs**PROTOCOL FOR LIFE BALANCE**$35.65**4.6★**▲ 12%**](https://www.amazon.com/dp/B01B6SG6ZC) [**Pure Encapsulations NAC 900 mg - N-Acetyl Cysteine Amino Acid Supplement for Lung & Immune Support Liver & Antioxidants* - 120 Capsules**Pure Encapsulations**$53.64**4.8★**— 8%**](https://www.amazon.com/dp/B0016D1KFO)
**~~View all trending →~~**
## **What reviews say buyers love and hate about nac 1000mg**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**21%
*“The quality is always consistent”*
**Value For Money**11%
*“Fair price”*
**Advertised Vs Actual Product**6%
*“As advertised”*
**Vitamin**6%
*“Good Supplement”*
**Efficiency**4%
*“Appears to be effective”*
**Nutritional Content**3%
*“This has easily been the most helpful supplement I've ever taken”*
**Dosage**3%
*“I like this dosage”*
**Ease Of Chewing/Swallowing**2%
*“my 11 year-old has no problem swallowing it”*
**Cough Relief**2%
*“I'm definitely coughing less”*
**Ingredients-Overall**2%
*“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 **
**Smell**27%
*“Horrible smell”*
**Taste-Overall**6%
*“Disgusting, I tried a couple and the taste is horrific”*
**Size-Overall**5%
*“They are small capsules”*
**Side Effects**5%
*“I stopped having this awful headache”*
**Dosage**4%
*“they didn't have the mg dosage needed to truly maintain a healthy system”*
**Functionality-Overall**4%
*“This product is ineffective”*
**Quality-Overall**3%
*“Bad quality control”*
**Ease Of Chewing/Swallowing**3%
*“A pain to swallow - literally”*
**Heart Health**2%
*“It did however give me terrible heart burn”*
**Acid Regulator/Stomach Ache Relief**2%
*“Congested”*
### **Top return reasons **
**Functionality-Overall**27%
**Advertised Vs Actual Product**27%
**Side Effects**9%
**Size-Overall**9%
**Smell**9%
**Dosage**9%
**Acid Regulator/Stomach Ache Relief**9%
## **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.
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