---
title: "Nac Powder — $15K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/nac-powder"
last_updated: "2026-08-12T08:46:16.920Z"
locale: en
meta:
description: "Amazon product research for nac powder: $15K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for nac powder: $15K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Nac Powder — $15K/mo Amazon US Product Research (2026)"
---
# **Nac Powder**
**Worth a look**
Shows low returns (0.0%), but soft demand (-18.3% this quarter) keeps it on the watch list.
Market size 36Growth 16Conversion 90Competition 37Returns 100Price range 95Avg price 95Brand share 24Review moat 67Quality gap 47
**Returns**
**Incredible****0.0%**
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**
**Great****10.8%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****806.8**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****63%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$177K**
$177K/yr · 66K searches
**Brand share**
**Bad****90%**
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 ~~](https://flapen.com/research/methodology)
## **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**
**23**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**63%**
Top 20: 100%
**Open market**
**6%**
- 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.
2K1KBlack Friday '24Spike '25Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Jan · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/us/health-household/nac-powder/trend)
## **Top nac powder search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **nac powder**44K/yr-13.7%8.4% conv. - **nac powder supplement**7K/yr-28.5%7.6% conv. - **nac supplement powder**7K/yr-43.5%9.2% conv. - **nac bulk supplements**4K/yr-5.1%16.1% conv. - **bulk supplements nac**4K/yr-6.8%18.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/nac-powder/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.
0%10%$18K20%$35K30%$53K40%$71K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**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**$17.86**4.4★2,355 rev](https://www.amazon.com/dp/B00F8HGA0E) [2**Nutricost N-Acetyl L-Cysteine (NAC) Powder 250 Grams Gluten-Free GMO-Free**Nutricost**$24.46**4.6★934 rev](https://www.amazon.com/dp/B07BK99PGK) [3**Now Supplements NAC (N-Acetyl Cysteine) 600 mg Pure Powder Free Radical Protection* Cellular Health* Immune System Function* 4-Ounce (113 g)**NOW Foods**$16.52**4.5★170 rev](https://www.amazon.com/dp/B0BBH84MDT) [4**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**$27.28**4.4★2,355 rev](https://www.amazon.com/dp/B00F8HG9VE) [5**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)
**~~View all top sellers →~~**
### **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**$26.90**62 rev4mo ago](https://www.amazon.com/dp/B0GTMPHJQ7) [**Nutricost NAC + Glycine Powder (250 Grams) Unflavored Gluten-Free**Nutricost**$21.45**119 rev9mo ago](https://www.amazon.com/dp/B0FW18R82G) [**Best Naturals NAC (N-Acetyl L-Cysteine) Premium Pure Powder 1 LB Gluten Free.**Best Naturals**$20.01**35 rev11mo ago](https://www.amazon.com/dp/B0FM5QZM6J) [**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) [**PURE ORIGINAL INGREDIENTS NAC N-Acetyl L-Cysteine Powder (8 oz) Lab Verified Always Pure No Fillers**PURE ORIGINAL INGREDIENTS**$17.95**126 rev3y ago](https://www.amazon.com/dp/B0BHL7QRM5)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**SEAFLEX NAC 600mg Non-GMO Gluten Free Organic NAC Supplement N-Acetyl Cysteine Capsules with NAD+ for Cellular & Lung Health 300 Softgels**SEAFLEX**$26.90**4.6★**▲ 322%**](https://www.amazon.com/dp/B0GTMPHJQ7) [**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**$27.28**4.4★**▲ 99%**](https://www.amazon.com/dp/B00F8HG9VE) [**Nutricost N-Acetyl L-Cysteine (NAC) Powder 500 Grams Vegan Gluten-Free**Nutricost**$38.39**4.6★**▲ 94%**](https://www.amazon.com/dp/B07BK9Y65P) [**Best Naturals NAC (N-Acetyl L-Cysteine) Premium Pure Powder 1 LB Gluten Free.**Best Naturals**$20.01**4.7★**▲ 88%**](https://www.amazon.com/dp/B0FM5QZM6J) [**Nutricost NAC + Glycine Powder (250 Grams) Unflavored Gluten-Free**Nutricost**$21.45**4.4★**▲ 85%**](https://www.amazon.com/dp/B0FW18R82G)
**~~View all trending →~~**
## **What reviews say buyers love and hate about nac powder**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**10%
*“contains excellent quality ingredients”*
**Value For Money**9%
*“Totally worth it for me”*
**Nutritional Content**6%
*“Works very well for so many health issues”*
**Solubility**5%
*“The powder dissolves reasonably well”*
**Dosage**5%
*“Flexible dosing: Powder form allows precise adjustment of dosage based on individual needs”*
**Taste-Overall**4%
*“no weird aftertaste”*
**Ease Of Chewing/Swallowing**4%
*“The capsules are easy to take”*
**Ease Of Use**3%
*“Easy to use”*
**Vitamin**3%
*“Thank you for helping us vitamin addicts”*
**Immunity Booster**3%
*“helps my immune system”*
### **What buyers complain about **
**Smell**18%
*“Horrible smell”*
**Taste-Overall**16%
*“The taste isnt good it's quite gross”*
**Dosage**6%
*“Less pills to get my dosage”*
**Flavor**5%
*“The glycine I've been taking was unflavored-as I assumed all glycine was”*
**Quality-Overall**3%
*“Bad quality control”*
**Sweetness**3%
*“it's very hard to get past the sickening artifical sweet tastetasteaa”*
**Solubility**2%
*“The crystals take forever to dissolve”*
**Ingredients-Overall**2%
*“Other ingredients: none”*
**Bitter**2%
*“bitter”*
**Sour**2%
*“So very sour >”*
### **Top return reasons **
**Smell**25%
**Acid Regulator/Stomach Ache Relief**25%
**Vegan/Organic**25%
**Sour**25%
## **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.
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