---
title: "Buffered Vitamin C — $237K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/buffered-vitamin-c"
last_updated: "2026-08-10T13:20:41.442Z"
locale: en
meta:
description: "Niche score 55/100 · $237K/yr market · 96K searches/yr · $23.30 avg price. Strong incumbent ratings (4.7★) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $237K/yr market · 96K searches/yr · $23.30 avg price. Strong incumbent ratings (4.7★) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Buffered Vitamin C — $237K/yr Amazon US Niche (2026) - Flapen"
---
# **buffered vitamin c**
**Worth a look**
Shows low returns (0.0%), but strong incumbent ratings (4.7★) keeps it on the watch list.
Market size 45Growth 23Conversion 89Competition 50Returns 100Price range 85Avg price 95Brand share 50Review moat 50Quality gap 19
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$23.30**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****10.6%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$7.96–$63.70**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Okay****55%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****75%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****1,539.25**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$237K**
$237K/yr · 96K searches
**Growth**
**Bad****-3.3%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, buffered vitamin c is a $237K/yr Amazon United States market (96K searches/yr). The top 5 brands hold 75% of demand. Demand peaks in Jan. Verdict: Worth a look — 55/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **buffered vitamin c market data**
- **Units sold / yr**
- **10K–13K**
- avg 500–750/product
- **Revenue / yr**
- **$233K–$291K**
- units × avg price
- **Conversion rate**
- **10.6%**
- **Avg BSR**
- **#467**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **123 months**
- **Avg seller age**
- **158 days**
## **Competition & brand share**
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**15 **▲rising
**Sellers**
**571**
**Top-5 brand share**
**75%**
Top 20: 100%
**Top-5 click share**
**55%**
Top 20: 95%
**Open market**
**20%**
- Integrative Therapeutics24% - NOW Foods22% - Pure Encapsulations14% - 365 by Whole Foods Market10% - Allergy Research Group5% - THORNE5%
## **Demand & seasonality**
Weekly Amazon search volume, last 100 weeks — -3.3% search growth over the last 90 days.
3K2KSpike '24Spike '25Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Jan · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/health-household/buffered-vitamin-c/trend)
## **Top buffered vitamin c search terms**
- **buffered vitamin c**72K/yr+0.2%9.4% conv. - **vitamin c buffered**9K/yr-10.0%8.5% conv. - **buffered vitamin c 500mg**6K/yr-4.0%10.6% conv. - **buffered vitamin c 1000mg**6K/yr-21.8%10.9% conv. - **buffered c**3K/yr-21.9%15.2% conv. [**All search terms **](https://flapen.com/research/us/health-household/buffered-vitamin-c/search-terms)
## **Top buffered vitamin c 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%5%$12K10%$24K15%$36K20%$47K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Integrative Therapeutics Buffered Vitamin C 1 000 mg - Easy Daily Immune Support with Magnesium & Calcium* - Antioxidant Support for Healthy Skin & Connective Tissues* - 60 Vegan Capsules 1**Integrative Therapeutics**$14.86**4.8★2,184 rev](https://www.amazon.com/dp/B0031WZBDK) [2**NOW Supplements Vitamin C-1000 Complex with 250 mg of Bioflavonoids Buffered Antioxidant Protection* 90 Tablets**NOW Foods**$11.76**4.7★1,852 rev](https://www.amazon.com/dp/B0001SR54K) [3**Pure Encapsulations Buffered Ascorbic Acid Capsules | Vitamin C for Sensitive Individuals* | 90 Capsules**Pure Encapsulations**$25.88**4.8★745 rev](https://www.amazon.com/dp/B07FYVWLXC) [4**Integrative Therapeutics Buffered Vitamin C 1 000 mg - Easy Daily Immune Support with Magnesium & Calcium* - Antioxidant Support for Healthy Skin & Connective Tissues* - 60 Vegan Capsules 2**Integrative Therapeutics**$29.60**4.8★2,184 rev](https://www.amazon.com/dp/B0BN6WQBG3) [5**365 by Whole Foods Market Buffered Vitamin C Complex Vegan 60 Capsules**365 by Whole Foods Market**$7.96**4.7★442 rev](https://www.amazon.com/dp/B074H64BVT)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Buffered Vitamin C 1500mg Non-Acidic Stomach Friendly Calcium Ascorbate Capsules for Immune Support Gentle on Digestive System - 150 Veggie Caps by Innervis Nutrition**INNERVISNUTRITION**$16.21**37 rev2y ago](https://www.amazon.com/dp/B0D2RYJFVH) [**SOLARAY Super Bio Vitamin C 1000mg Buffered Time Release Capsules with Bioflavonoids Two-Stage for High Absorption and All Day Immune Support Vegan 60 Day Guarantee 140 Servings 280 VegCaps**SOLARAY**$26.04**2,701 rev3y ago](https://www.amazon.com/dp/B0BQTCVBSN) [**Integrative Therapeutics Buffered Vitamin C 1 000 mg - Easy Daily Immune Support with Magnesium & Calcium* - Antioxidant Support for Healthy Skin & Connective Tissues* - 60 Vegan Capsules 2**Integrative Therapeutics**$29.60**2,184 rev3y ago](https://www.amazon.com/dp/B0BN6WQBG3) [**THORNE - Vitamin C 500 mg - Blend of Vitamin C and Citrus Bioflavonoids from Oranges - Supports Immune System Cellular Energy Production & Collagen Synthesis* - Third-Party Certified - 90 Servings**THORNE**$21.99**3,588 rev4y ago](https://www.amazon.com/dp/B09FYFM7N3) [**365 by Whole Foods Market Buffered Vitamin C Complex Vegan 60 Capsules**365 by Whole Foods Market**$7.96**442 rev8y ago](https://www.amazon.com/dp/B074H64BVT)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Buffered Vitamin C 1500mg Non-Acidic Stomach Friendly Calcium Ascorbate Capsules for Immune Support Gentle on Digestive System - 150 Veggie Caps by Innervis Nutrition**INNERVISNUTRITION**$16.21**4.3★**▲ 170%**](https://www.amazon.com/dp/B0D2RYJFVH) [**Metagenics Ultra Potent-C 500 - Buffered Vitamin C Supplement for Immune Support Antioxidant Defense & Collagen Formation - Gentle Stomach-Friendly Non-GMO Gluten-Free - 90 Tablets**Metagenics**$27.85**4.7★**▲ 67%**](https://www.amazon.com/dp/B005P0VXQ0) [**NOW Foods Supplements Vitamin C-500 Calcium Ascorbate Antioxidant Protection* 250 Veg Capsules**NOW Foods**$13.69**4.8★**▲ 45%**](https://www.amazon.com/dp/B000VRXD1K) [**ARG Buffered Vitamin C Powder - Buffered Vitamin C for Antioxidant & Immune Support - Ascorbic Acid with Calcium Magnesium & Potassium - Non-GMO & Gluten-Free - 102 Servings - 8.5 oz**Allergy Research Group**$29.33**4.6★**▲ 44%**](https://www.amazon.com/dp/B001WULFNS) [**NOW Supplements Vitamin C-1000 Complex with 250 mg of Bioflavonoids Buffered Antioxidant Protection* 90 Tablets**NOW Foods**$11.76**4.7★**▲ 42%**](https://www.amazon.com/dp/B0001SR54K)
**~~View all trending →~~**
## **What buyers say about buffered vitamin c**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“the overall quality feels consistent”*
**Vitamin**18%
*“Good vitamin”*
**Value For Money**11%
*“Reasonable price”*
**Acid Regulator/Stomach Ache Relief**8%
*“No stomach issues”*
**Ease Of Chewing/Swallowing**5%
*“Easy to swallow”*
**Advertised Vs Actual Product**5%
*“Seems to be as advertised”*
**Immunity Booster**4%
*“Extra immune support”*
**Efficiency**3%
*“effect”*
**Absorbency**2%
*“Great absorption”*
**Ingredients-Overall**2%
*“appreciate their ingredient integrity”*
### **What buyers complain about **
**Taste-Overall**11%
*“It tastes terrible”*
**Solubility**11%
*“Doesnt dissolve at all”*
**Ease Of Chewing/Swallowing**8%
*“Too big for me to swallow”*
**Vitamin**6%
*“This is the most disgusting chewable vitamin Ive ever had”*
**Size-Overall**5%
*“Pills are huge”*
**Color**4%
*“the caplets are much lighter in color”*
**Functionality-Overall**4%
*“Inactive does nothing”*
**Advertised Vs Actual Product**4%
*“Incorrect Product Photos”*
**Acid Regulator/Stomach Ache Relief**4%
*“or experience an tummy troubles while taking”*
**Vegan/Organic**3%
*“Its not edible- DO NOT BUY THIS ONE”*
### **Top return reasons **
**Ease Of Chewing/Swallowing**25%
**Certifications**25%
**Vitamin**25%
**Acid Regulator/Stomach Ache Relief**25%
## **Common questions**
- **Is buffered vitamin c profitable to sell on Amazon United States?**
- The niche generates $237K/yr across 24 tracked products. 90-day search growth is -3.3%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the buffered vitamin c niche?**
- 15 brands and 571 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 75% of demand.
- **What do buyers complain about in buffered vitamin c?**
- Top complaints mined from reviews: Taste-Overall, Solubility, Ease Of Chewing/Swallowing. The return rate is 0.0%.
- **When does demand for buffered vitamin c peak?**
- Demand peaks in Jan; the busiest month runs 2.0× the quietest.
- **What does it cost to enter the buffered vitamin c niche?**
- Listings span $7.96–$63.70; the average listing price is $23.30 (sweet spot $15–$100). The average incumbent carries 1,539 reviews — the moat a new listing must climb.
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