Is vitamin c profitable to sell on Amazon United States?

The niche generates $24.5M/yr across 33 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -1.2%. Flapen's verdict: Worth a look (56/100).

How competitive is the vitamin c niche?

18 brands and 687 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 70% of demand.

What do buyers complain about in vitamin c?

Top complaints mined from reviews: Functionality-Overall, Allergies, Symptom Reduction. The return rate is 0.2%.

When does demand for vitamin c peak?

Demand peaks in Dec; the busiest month runs 1.9× the quietest.

What does it cost to enter the vitamin c niche?

Listings span $5.68–$38.57; the average listing price is $16.28 (sweet spot $15–$100). The average incumbent carries 20,502 reviews — the moat a new listing must climb.

vitamin c

Worth a look

Shows a $24.5M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size

Incredible$24.5M

$24.5M/yr · 101.0M searches

Returns

Incredible0.2%

return rate — above 5% kills the launch gate

Avg price

Great$16.28

avg listing price — sweet spot $15–$100

Price range

Good$5.68–$38.57

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

Competition

Good45%

top-5 click share — leaders hold, buyers still browse

Brand share

Good70%

top-5 brand share — brands hold most of the demand

Growth

Bad-1.2%

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

Conversion

Bad1.5%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Review moat

Bad20,502.36

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, vitamin c is a $24.5M/yr Amazon United States market (101.0M searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Dec. Verdict: Worth a look — 56/100.

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

vitamin c market data

Units sold / yr: 1.0M–1.0M; avg 60,000–80,000/product
Revenue / yr: $16.3M–$16.3M; units × avg price
Conversion rate: 1.5%
Avg BSR: #83
Page quality: 0%
Prime: 100%
Sponsored: 79%
Out of stock: 0.0%
Avg brand age: 65 months
Avg seller age: 137 days

Competition & brand share

The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.

Brands

18 flat

Sellers

687

Top-5 brand share

70%

Top 20: 100%

Top-5 click share

45%

Top 20: 85%

Open market

25%

Nature Made34%
Nature's Bounty17%
Bronson8%
THORNE5%
Sports Research5%
Nutricost5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -1.2% search growth over the last 90 days.

Peak months: Dec · busiest ÷ quietest = 1.9×

Open Trend

Top vitamin c search terms

vitamin c8.3M/yr -10.9%9.8% conv.
vitamin c 1000mg872K/yr -27.1%16.3% conv.
vitamina c545K/yr -7.7%3.4% conv.
vitamina c 1000mg308K/yr -26.4%4.4% conv.
vit c220K/yr -4.9%8.9% conv.
vitamin c supplement154K/yr +14.0%9.4% conv.
nature made vitamin c141K/yr -24.4%14.8% conv.
vitamin c tablets99K/yr +7.2%7.9% conv.
vitamin c capsules98K/yr +1.1%4.8% conv.
vitamin c supplements63K/yr -5.1%4.2% conv.

All search terms

Top 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Nature Made Extra Strength Vitamin C 1000 mg Tablets Adult Vitamin C Tablets for Immune Support 100 Count 100 Day Supply

Nature Made$8.794.8★40,559 rev

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

Natures Bounty Vitamin C + Rose Hips Immune Support 1000mg Vitamin C Coated Caplets 1 Serving per Day Vegetarian Caplets 100 Ct

Nature's Bounty$7.464.8★49,486 rev

Nutricost Vitamin C with Rose Hips 1025mg 240 Capsules Gluten Free

Nutricost$17.144.8★24,028 rev

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

Bronson$9.794.8★4,035 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 1000mg Extra Strength Supports a Healthy Immune System High Potency Non-GMO 100 Vegetarian Tablets

Bronson$10.03773 rev

1y ago

NatureWise Vitamin C 1000mg Capsules - Extra Strength Vegan Vitamin C for Daily Antioxidant & Immune Support - Non-GMO USA Manufactured - 120 Capsules[120-Day Supply]

NatureWise$8.982,802 rev

1y ago

NatureWise Vitamin C 1000mg Capsules - Extra Strength Vegan Vitamin C for Daily Antioxidant & Immune Support - Non-GMO USA Manufactured - 60 Capsules[60-Day Supply]

NatureWise$6.672,802 rev

2y ago

EQQUALBERRY Vitamin Illuminating Serum | Niacinamide 4% & TXA | Brightening Vitamin C Serum for Face Glow with Hyaluronic Acid | Dark Spot & Uneven Tone Care | Korean Skincare 1.01 fl oz

EQQUALBERRY$18.1416,065 rev

2y ago

What buyers say about vitamin c

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

What buyers love

Quality-Overall18%

“the quality is consistent”

Vitamin11%

“Quality Vitamins”

Suitability Combination Skin8%

“Good for skin”

Value For Money7%

“Great deal”

Soft Feel6%

“Leaves skin soft”

Brightness/Shine/Glow5%

“has a natural glow”

Advertised Vs Actual Product3%

“As advertised”

Moist/Dry3%

“Good moisturizer”

Efficiency3%

“Works perfectly”

Taste-Overall2%

“Taste mild”

What buyers complain about

Functionality-Overall19%

“No results”

Allergies7%

“Skin irritation”

Symptom Reduction7%

“No improvement”

Value For Money6%

“Way too expensive”

Size-Overall6%

“Too tiny”

Skin Health4%

“Irritated skin”

Advertised Vs Actual Product4%

“Fake advertising”

Ease Of Chewing/Swallowing3%

“Impossible to swallow”

Quality-Overall3%

“Failed quality control”

Vitamin2%

“No vitamin k in it”

Top return reasons

Functionality-Overall21%

Advertised Vs Actual Product12%

Value For Money11%

Texture/Consistency-Overall5%

Skin Health4%

Adhesion/Stickiness4%

Product Condition3%

Size-Overall3%

Smell3%

Leak-Proof3%

Common questions

Is vitamin c profitable to sell on Amazon United States?: The niche generates $24.5M/yr across 33 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -1.2%. Flapen's verdict: Worth a look (56/100).
How competitive is the vitamin c niche?: 18 brands and 687 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 70% of demand.
What do buyers complain about in vitamin c?: Top complaints mined from reviews: Functionality-Overall, Allergies, Symptom Reduction. The return rate is 0.2%.
When does demand for vitamin c peak?: Demand peaks in Dec; the busiest month runs 1.9× the quietest.
What does it cost to enter the vitamin c niche?: Listings span $5.68–$38.57; the average listing price is $16.28 (sweet spot $15–$100). The average incumbent carries 20,502 reviews — the moat a new listing must climb.