Is ascorbate vitamin c profitable to sell on Amazon United States?

The niche generates $995K/yr across 12 tracked products. 90-day search growth is -12.5%. Flapen's verdict: Skip it (46/100).

How competitive is the ascorbate vitamin c niche?

4 brands and 112 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in ascorbate vitamin c?

Top complaints mined from reviews: Size-Overall, Ease Of Chewing/Swallowing, Vitamin. The return rate is 0.0%.

When does demand for ascorbate vitamin c peak?

Demand peaks in Jan–Apr–May; the busiest month runs 3.2× the quietest.

What does it cost to enter the ascorbate vitamin c niche?

Listings span $6.63–$26.55; the average listing price is $18.46 (sweet spot $15–$100). The average incumbent carries 7,602 reviews — the moat a new listing must climb.

ascorbate vitamin c

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible22.8%

search→purchase rate — share of searches ending in a sale

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$18.46

avg listing price — sweet spot $15–$100

Market size

Great$995K

$995K/yr · 236K searches

Price range

Good$6.63–$26.55

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Bad7,601.75

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-12.5%

90-day search growth — must beat 0% to launch

Competition

Bad81%

top-5 click share — a locked-up shelf

Quality gap

Bad4.8★

avg incumbent rating — lower means beatable quality

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, ascorbate vitamin c is a $995K/yr Amazon United States market (236K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Apr–May. Verdict: Skip it — 46/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

ascorbate vitamin c market data

Units sold / yr: 60K–80K; avg 3,000–4,000/product
Revenue / yr: $1.1M–$1.5M; units × avg price
Conversion rate: 22.8%
Avg BSR: #403
Page quality: 0%
Prime: 100%
Sponsored: 58%
Out of stock: 0.0%
Avg brand age: 116 months
Avg seller age: 154 days

Competition & brand share

The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 flat

Sellers

112

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

81%

Top 20: 100%

Open market

Ester-C51%
American Health37%
Solgar10%
Pure Encapsulations2%

Demand & seasonality

Weekly Amazon search volume, last 103 weeks — -12.5% search growth over the last 90 days.

Peak months: Jan, Apr, May · busiest ÷ quietest = 3.2×

Open Trend

Top ascorbate vitamin c search terms

ester c96K/yr -7.3%18.6% conv.
ester c 500mg73K/yr -12.6%28.2% conv.
ester-c13K/yr +7.3%8.4% conv.
ester c 500mg capsules8K/yr -17.9%23.0% conv.
ester-c 500mg4K/yr -4.5%30.5% conv.
non acidic vitamin c4K/yr -16.3%3.9% conv.
vitamin c ester5K/yr -9.3%12.2% conv.
esther c5K/yr -23.2%22.9% conv.
solgar ester c 500mg4K/yr +1.8%22.9% conv.
ester c 500 mg3K/yr -0.6%28.5% conv.

All search terms

Top ascorbate 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 12 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Ester-C 500 mg 24 Hour Vitamin C Tablets for Immune Support Vitamin C Supplement 90 Count

Ester-C$6.634.8★8,786 rev

Ester-C Vitamin C 1000 mg Coated Tablets Immune System Booster Stomach-Friendly Supplement 120 Count

Ester-C$14.664.7★20,436 rev

American Health Ester-C with Citrus Bioflavonoids Capsules - Gentle On Stomach Non-Acidic Vitamin C - 500 mg 60 Servings 120 Count

American Health$13.134.8★9,974 rev

American Health Ester-C with Citrus Bioflavonoids Capsules - 24-Hour Immune Support Gentle On Stomach Non-Acidic Vitamin C - Non-GMO Gluten-Free - 500 mg 240 Count 120 Servings

American Health$24.694.8★9,974 rev

Solgar Ester-C Plus 500 mg Vitamin C (Ascorbate Complex) 250 Vegetable Capsules - Gentle & Non Acidic - Antioxidant & Immune Support - Non GMO Vegan Gluten Free Kosher - 250 Servings

Solgar$20.114.8★4,547 rev

Newest

by launch date

Ester-C 500 mg 24 Hour Vitamin C Tablets for Immune Support Vitamin C Supplement 90 Count

Ester-C$6.638,786 rev

13y ago

Ester-C Vitamin C 1 000 mg 90 Coated Tablets

Ester-C$13.6820,436 rev

16y ago

Ester-C American Health with Citrus Bioflavonoids Capsules - 24-Hour Immune Support Gentle On Stomach Non-Acidic Vitamin C - Non-GMO Gluten-Free - 1000 mg 90 Count

American Health$20.535,675 rev

17y ago

American Health Ester-C Vitamin C 500 mg Coated Tablets Immune System Booster Stomach-Friendly Supplement 225 Count

American Health$17.531,094 rev

18y ago

Pure Encapsulations Ester-C & Flavonoids - Vitamin C Supplement for Antioxidants - Immune & Vascular Support* with Calcium & Rutin - Gentle on Digestion - Vegan & Non-GMO - 90 Capsules

Pure Encapsulations$26.551,164 rev

18y ago

What buyers say about ascorbate vitamin c

What buyers praise and complain about, mined from review topics.

What buyers love

Vitamin25%

“Best vitamins”

Acid Regulator/Stomach Ache Relief14%

“Great and no stomach cramps”

Quality-Overall11%

“Excellent product”

Ease Of Chewing/Swallowing7%

“EASY TO SWALLOW”

Value For Money6%

“Value for money”

Advertised Vs Actual Product5%

“Does exactly as advertised”

Immunity Booster4%

“Good immune support”

Cold Relief3%

“it can keep you away from colds and flu”

Regulates Digestion3%

“because it does not cause digestive problem like some Vitamin C products do”

Nutritional Content1%

“Keep you healthy”

What buyers complain about

Size-Overall29%

“They are huge”

Ease Of Chewing/Swallowing19%

“Too big for me to swallow”

Vitamin6%

“Do not buy vitamins”

Dosage4%

“Difficult to find the 500mg”

Heart Health4%

“If something that is supposed to maintain health makes you feel worse”

Ingredients-Overall4%

“This product did not show other ingredients on the label that was shown on the item page”

Vegan/Organic3%

“Not Kosher/Halal”

Side Effects3%

“I have consumed it for more than 3 weeks”

Hard Feel3%

“They are also hard like a rock”

Value For Money3%

“Waste of money”

Top return reasons

Value For Money50%

Ingredients-Overall25%

Advertised Vs Actual Product17%

Side Effects8%

Common questions

Is ascorbate vitamin c profitable to sell on Amazon United States?: The niche generates $995K/yr across 12 tracked products. 90-day search growth is -12.5%. Flapen's verdict: Skip it (46/100).
How competitive is the ascorbate vitamin c niche?: 4 brands and 112 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in ascorbate vitamin c?: Top complaints mined from reviews: Size-Overall, Ease Of Chewing/Swallowing, Vitamin. The return rate is 0.0%.
When does demand for ascorbate vitamin c peak?: Demand peaks in Jan–Apr–May; the busiest month runs 3.2× the quietest.
What does it cost to enter the ascorbate vitamin c niche?: Listings span $6.63–$26.55; the average listing price is $18.46 (sweet spot $15–$100). The average incumbent carries 7,602 reviews — the moat a new listing must climb.