High Dose Vitamin C
FailThe top 5 brands take 98% of clicks, so High Dose Vitamin C is a Fail.
- Flapen Score
- 44 / 100Ranks 10,233 of 14,768 Health & Household niches · −5 vs the category median of 4944
- Market size
- $328K/yr101K searches / yr
- 90-day growth
- -9.7%search demand this quarter
- Competition
- 88%top-5 click share · 6 brands · 14 sellers
Flapen Score
High Dose Vitamin C against its category
The dotted line is the Health & Household average. Past it, High Dose Vitamin C is stronger. Inside it, weaker.
Market
The High Dose Vitamin C market on Amazon at a glance
Shoppers on Amazon United States searched for High Dose Vitamin C 101K times last year and spent an estimated $328K. The top 5 brands take 98% of clicks. Demand peaks in Feb. Flapen scores it 44 out of 100, a Fail.
01 · Demand
An estimated 12.9% of those searches ended in a purchase.
Shoppers searched for this 101K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 12.9% of those searches ended in a purchase. Searches in the last 90 days moved -9.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $328K a year.
- Searches, last 12 months
- 101K
- Growth, 90 days vs prior 90
- -9.7%
- Conversion, latest week
- 12.9%
- Market size, estimated
- $328Ka year
- Peak month
- February3.1× the quietest month
- Top search term
- sports research vitamin c22K searches a year
02 · Price
A sale here is worth $24.99.
Listings sell for $24.99 on average, from $9.66 to $46.83. Amazon reports units sold in ranges. This niche sold 13K to 15K a year. The average listing sells 1,250 to 1,500 of them. At $24.99 that is $31K to $37K a year per listing.
- Average price
- $24.99inside the $15 to $100 sweet spot
- Price range
- $9.66–$46.83
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 13K–15K
- Units per listing a year
- 1,250–1,500
- Revenue per listing a year
- $31K–$37K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
100% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #66 within Amino Acids. It carries 6,572 reviews at 4.72 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #66in Amino Acids
- Average rating
- 4.72 starsAmazon United States average 4.42 stars
- Average reviews
- 6,572per listing
- Listings tracked
- 10
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 97 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 97 months
Products
Top High Dose Vitamin C 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
Sports Research High Potency Vitamin C Supplement - Vegan Veggie Capsules for Antioxidant Activity & Immune Support - Non-GMO Verified & Gluten Free - Ascorbic Acid Vitamin C 1000mg 240 Count
- Price
- $20.95
- Rating
- 4.8/5
- Reviews
- 10,520
- Age
- 6y ago

Sports Research High Potency Liposomal Vitamin C Supplement 1000 mg Certified Vegan Non-GMO Gluten Free | Antioxidant & Immune Support | Ascorbic Acid Vitamin C | 180 Liquid Veggie Capsules
- Price
- $34.59
- Rating
- 4.8/5
- Reviews
- 10,520
- Age
- 1y ago

Sufficient-C 4 000 mg. High-Dose Vitamin C Lemon Peach Immune-Ade Drink Mix - 250 gram - Refreshing with Generously Dosed L-lysine Bromelain & 96% Pure Caffeine-Free Green Tea Extract
- Price
- $46.83
- Rating
- 4.7/5
- Reviews
- 1,868
- Age
- 12y ago

Sufficient-C High Dose Non-GMO Vitamin C Lemon Peach Immune-Ade Drink Mix Convenient 125 Gram Size w/L-lysine Bromelain & a Premium 96% Pure Green Tea Extract - Stomach Friendly Adrenal Supportive
- Price
- $28.07
- Rating
- 4.7/5
- Reviews
- 1,410
- Age
- 12y ago

Carlyle Liposomal Vitamin C | 2200mg | 90 Softgel Capsules
- Price
- $9.66
- Rating
- 4.7/5
- Reviews
- 1,299
- Age
- 3y ago
Trending
estimated 90-day click momentum
Sports Research Vitamin C Gummies | 500 mg Vitamin C | Sugar Free Gelatin Free Vegan Certified & Non-GMO Tested | Immune & Antioxidant Support 60 Gummies
- Price
- $21.27
- Rating
- 4.8/5
- Reviews
- 10,520
- Age
- 5y ago

Sports Research High Potency Liposomal Vitamin C Supplement 1000 mg Certified Vegan Non-GMO Gluten Free | Antioxidant & Immune Support | Ascorbic Acid Vitamin C | 180 Liquid Veggie Capsules
- Price
- $34.59
- Rating
- 4.8/5
- Reviews
- 10,520
- Age
- 1y ago

Sports Research High Potency Vitamin C Supplement - Vegan Veggie Capsules for Antioxidant Activity & Immune Support - Non-GMO Verified & Gluten Free - Ascorbic Acid Vitamin C 1000mg 240 Count
- Price
- $20.95
- Rating
- 4.8/5
- Reviews
- 10,520
- Age
- 6y ago

NutriFlair Liposomal Vitamin C 1700mg 180 Capsules - High Absorption Fat Soluble VIT C Higher Bioavailability Immune System Support & Collagen Booster Non-GMO Vegan Pills
- Price
- $20.12
- Rating
- 4.7/5
- Reviews
- 23,063
- Age
- 7y ago

Carlyle Liposomal Vitamin C | 2200mg | 90 Softgel Capsules
- Price
- $9.66
- Rating
- 4.7/5
- Reviews
- 1,299
- Age
- 3y ago
Newest
by launch date
Sports Research High Potency Liposomal Vitamin C Supplement 1000 mg Certified Vegan Non-GMO Gluten Free | Antioxidant & Immune Support | Ascorbic Acid Vitamin C | 180 Liquid Veggie Capsules
- Price
- $34.59
- Rating
- 4.8/5
- Reviews
- 10,520
- Age
- 1y ago

Liposomal Vitamin C 2 500mg 240 Veggie Capsules | Highly Bioavailable Fat Soluble Form | Immune Support & Antioxidant Supplement | Liposomal Delivery for Superior Absorption | Non-GMO Gluten Free
- Price
- $21.86
- Rating
- 4.7/5
- Reviews
- 539
- Age
- 1y ago

Carlyle Liposomal Vitamin C | 2200mg | 90 Softgel Capsules
- Price
- $9.66
- Rating
- 4.7/5
- Reviews
- 1,299
- Age
- 3y ago

Vitablosom Liposomal Vitamin C 2000mg Liquid for Adults High Absorption VIT C Maximize Vitamin C Immune System & Antioxidant Support 60ML (2 Bottle)
- Price
- $34.66
- Rating
- 4.6/5
- Reviews
- 2,616
- Age
- 4y ago

Carlyle Vitamin C 2000mg | with Rose Hips | 150 Caplets
- Price
- $11.87
- Rating
- 4.7/5
- Reviews
- 3,360
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 88% of clicks. A locked shelf that new listings rarely crack.
Brands
6 falling
Sellers
14
Est. top-5 brand share
98%
Top 20: 100%
Est. top-5 click share
88%
Top 20: 100%
Open market
0%
- Sports Research52%
- Sufficient-C33%
- Carlyle7%
- NutriFlair4%
- Vitablosom2%
- Micro Ingredients2%
Demand
High Dose Vitamin C search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Feb · busiest ÷ quietest = 3.1×
Search terms
Top High Dose Vitamin C search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- sports research vitamin c22K/yr
- high dose vitamin c23K/yr
- high potency vitamin c13K/yr
- sufficient c vitamin c powder17K/yr
- sufficient c11K/yr
- vitamin c sports research6K/yr
- vitamin c high dose6K/yr
- vitamin c high potency3K/yr
Reviews and returns
What reviews say buyers love and hate about High Dose Vitamin C
We read the reviews and the return reasons for every product selling here.
“When you need a high dose it means having to take way too many capsules which makes them expensive”
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.
20 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 High Dose Vitamin C 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









