Is vitamin c 500mg profitable to sell on Amazon United States?

The niche generates $1.4M/yr across 15 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -12.1%. Flapen's verdict: Skip it (47/100).

How competitive is the vitamin c 500mg niche?

7 brands and 109 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 94% of demand.

What do buyers complain about in vitamin c 500mg?

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

When does demand for vitamin c 500mg peak?

Demand is steady year-round — the busiest month runs 1.5× the quietest.

What does it cost to enter the vitamin c 500mg niche?

Listings span $5.41–$21.99; the average listing price is $11.09 (sweet spot $15–$100). The average incumbent carries 15,890 reviews — the moat a new listing must climb.

vitamin c 500mg

Skip it

Brand-locked demand (top 5 brands take 94% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible21.2%

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

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Market size

Great$1.4M

$1.4M/yr · 602K searches

Avg price

Okay$11.09

avg listing price — sweet spot $15–$100

Price range

Okay$5.41–$21.99

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

Competition

Bad73%

top-5 click share — a locked-up shelf

Growth

Bad-12.1%

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

Review moat

Bad15,889.93

avg incumbent reviews — the moat a new listing must climb

Brand share

Bad94%

top-5 brand share — brand-locked demand

Quality gap

Bad4.8★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, vitamin c 500mg is a $1.4M/yr Amazon United States market (602K searches/yr). The top 5 brands hold 94% of demand. Verdict: Skip it — 47/100.

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

vitamin c 500mg market data

Units sold / yr: 125K–150K; avg 8,000–10,000/product
Revenue / yr: $1.4M–$1.7M; units × avg price
Conversion rate: 21.2%
Avg BSR: #89
Page quality: 0%
Prime: 100%
Sponsored: 60%
Out of stock: 0.0%
Avg brand age: 99 months
Avg seller age: 148 days

Competition & brand share

The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 flat

Sellers

109

Top-5 brand share

94%

Top 20: 100%

Top-5 click share

73%

Top 20: 100%

Open market

Nature Made40%
Nature's Bounty23%
Bronson19%
NOW Foods7%
THORNE5%
Nutricost4%
Open — no brand owns it (1 brand, 2%)

Demand & seasonality

Weekly Amazon search volume, last 103 weeks — -12.1% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top vitamin c 500mg search terms

vitamin c 500mg319K/yr -15.0%21.0% conv.
vitamin c 500 mg38K/yr -10.2%17.8% conv.
vit c 500mg27K/yr +2.4%17.9% conv.
vitamin c 50029K/yr -12.0%17.2% conv.
natures bounty vitamin c37K/yr -31.3%11.5% conv.
vitamin c 500mg capsules24K/yr +21.9%9.3% conv.
500 mg vitamin c17K/yr +2.4%17.3% conv.
vitamin c capsules 500mg21K/yr -8.2%5.9% conv.
500mg vitamin c12K/yr +26.0%9.7% conv.
nature made vitamin c 500mg12K/yr +13.9%24.9% conv.

All search terms

Top vitamin c 500mg 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 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Nature Made Vitamin C 500 mg Tablets for Daily Immune Support Adult Vitamin C Tablets for Immune Support 100 Count 100 Day Supply

Nature Made$6.154.8★8,316 rev

Bronson Vitamin C 500 mg Immune & Antioxidant Support Non-GMO 250 Tablets

Bronson$9.794.8★4,035 rev

Natures Bounty Vitamin C 500mg Supports a Healthy Immune System Daily Vitamin Supplement 250 Vegetarian Tablets

Nature's Bounty$10.114.7★56,378 rev

NOW Supplements Vitamin C-500 with Rose Hips Antioxidant Protection* 250 Tablets

NOW Foods$10.094.8★6,145 rev

Nature Made Vitamin C 500 mg with Rose Hips Caplets Vitamin C for Immune Support 130 Caplets 130 Day Supply

Nature Made$6.974.7★31,464 rev

Newest

by launch date

Natures Bounty Vitamin C 500mg Supports a Healthy Immune System Daily Vitamin Supplement 250 Vegetarian Tablets

Nature's Bounty$10.1156,378 rev

8mo ago

Bronson Vitamin C 500 mg Immune & Antioxidant Support Non-GMO 100 Tablets

Bronson$7.864,035 rev

2y ago

Bronson Vitamin C 500 mg Immune & Antioxidant Support Non-GMO 250 Tablets

Bronson$9.794,035 rev

2y ago

Nutricost Vitamin C 500mg 240 Capsules Vegetarian Gluten Free & Non-GMO

Nutricost$13.80795 rev

4y ago

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$21.993,588 rev

4y ago

What buyers say about vitamin c 500mg

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

What buyers love

Quality-Overall21%

“EXCELLENT PRODUCT”

Vitamin21%

“Quality vitamins”

Value For Money12%

“Good value for money”

Taste-Overall6%

“Taste mild”

Advertised Vs Actual Product6%

“As advertised”

Ease Of Chewing/Swallowing5%

“They are chewable”

Immunity Booster3%

“it also does a great job of giving your immune system healthy support”

Ease Of Use2%

“Easy”

Size-Overall2%

“The PERFECT size and dose”

Efficiency2%

“It does the job”

What buyers complain about

Ease Of Chewing/Swallowing18%

“Impossible to swallow”

Size-Overall14%

“Small size”

Taste-Overall8%

“Doesn't taste good”

Vitamin7%

“No vitamin k in it”

Sour4%

“Tastes like sour gummy bears”

Value For Money3%

“This is not worth paying it”

Bitter2%

“Very bitter”

Hard Feel2%

“rigid with a dark brown felt-like insole that's hard as a rock”

Color2%

“Only minor complaint is that it could come in more color options”

Solubility1%

“A good company and vitamin, however, the tablets have no coating at all, allowing them to begin dissolving, leaving a very bitter, sour taste as soon as they touch the tongue and going down the throat”

Top return reasons

Ease Of Chewing/Swallowing35%

Size-Overall18%

Vitamin12%

Dosage12%

Acid Regulator/Stomach Ache Relief6%

Certifications6%

Value For Money6%

Regulates Digestion3%

Heart Health3%

Common questions

Is vitamin c 500mg profitable to sell on Amazon United States?: The niche generates $1.4M/yr across 15 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -12.1%. Flapen's verdict: Skip it (47/100).
How competitive is the vitamin c 500mg niche?: 7 brands and 109 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 94% of demand.
What do buyers complain about in vitamin c 500mg?: Top complaints mined from reviews: Ease Of Chewing/Swallowing, Size-Overall, Taste-Overall. The return rate is 0.0%.
When does demand for vitamin c 500mg peak?: Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the vitamin c 500mg niche?: Listings span $5.41–$21.99; the average listing price is $11.09 (sweet spot $15–$100). The average incumbent carries 15,890 reviews — the moat a new listing must climb.