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

The niche generates $443K/yr across 50 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -11.4%. Flapen's verdict: Worth a look (60/100).

How competitive is the vitamin c capsules niche?

27 brands and 694 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 63% of demand.

What do buyers complain about in vitamin c capsules?

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

When does demand for vitamin c capsules peak?

Demand peaks in Aug; the busiest month runs 3.0× the quietest.

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

Listings span $5.41–$52.65; the average listing price is $16.22 (sweet spot $15–$100). The average incumbent carries 10,626 reviews — the moat a new listing must climb.

vitamin c capsules

Worth a look

Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Great9.8%

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

Competition

Great34%

top-5 click share — an open shelf

Price range

Great$5.41–$52.65

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

Avg price

Great$16.22

avg listing price — sweet spot $15–$100

Brand share

Good63%

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

Market size

Good$443K

$443K/yr · 280K searches

Review moat

Bad10,625.56

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-11.4%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, vitamin c capsules is a $443K/yr Amazon United States market (280K searches/yr). The top 5 brands hold 63% of demand. Demand peaks in Aug. Verdict: Worth a look — 60/100.

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

vitamin c capsules market data

Units sold / yr: 30K–40K; avg 500–750/product
Revenue / yr: $487K–$649K; units × avg price
Conversion rate: 9.8%
Avg BSR: #250
Page quality: 0%
Prime: 100%
Sponsored: 76%
Out of stock: 0.0%
Avg brand age: 86 months
Avg seller age: 138 days

Competition & brand share

Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.

Brands

27 rising

Sellers

694

Top-5 brand share

63%

Top 20: 96%

Top-5 click share

34%

Top 20: 77%

Open market

32%

Nature Made26%
Nature's Bounty14%
NatureWise10%
Bronson7%
NOW Foods6%
Nutricost5%

Demand & seasonality

Weekly Amazon search volume, last 99 weeks — -11.4% search growth over the last 90 days.

Peak months: Aug · busiest ÷ quietest = 3.0×

Open Trend

Top vitamin c capsules search terms

vitamin c 1000mg capsules40K/yr -19.7%10.9% conv.
vitamin c pills41K/yr -18.4%12.9% conv.
vitamin c gel capsules21K/yr -6.1%8.9% conv.
vitamin c capsules 1000mg24K/yr -12.4%11.7% conv.
vitamin c softgels18K/yr -6.0%7.5% conv.
vegan vitamin c18K/yr +12.8%3.8% conv.
vitamin c pill11K/yr +17.0%7.2% conv.
vitamin c gel12K/yr -16.2%4.2% conv.
vitamin c vegan10K/yr +9.7%4.8% conv.
vitamin c 1000mg tablets12K/yr -38.6%9.7% conv.

All search terms

Top vitamin c capsules 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 for Daily Immune Support 60 Softgels

Nature Made$10.074.6★3,117 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

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$8.984.7★2,802 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

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

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

Bronson$9.794,035 rev

2y ago

What buyers say about vitamin c capsules

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

What buyers love

Vitamin22%

“Great vitamin”

Quality-Overall19%

“EXCELLENT PRODUCT”

Value For Money11%

“fair price”

Ease Of Chewing/Swallowing5%

“Very chewable”

Taste-Overall4%

“Excellent taste”

Advertised Vs Actual Product4%

“Works as intended”

Immunity Booster4%

“support immune system”

Ease Of Use3%

“Ease of use”

Cold Relief3%

“Helps with cold”

Acid Regulator/Stomach Ache Relief2%

“No stomach issues”

What buyers complain about

Size-Overall17%

“Small size”

Ease Of Chewing/Swallowing10%

“Impossible to swallow”

Taste-Overall10%

“Didnt like the taste”

Vitamin7%

“Not the vitamins I wanted”

Quality-Overall2%

“Failed quality control”

Dosage2%

“While the dosage may be a bit high for some users”

Value For Money2%

“Too expensive”

Adhesion/Stickiness2%

“Gooey, melty, sticky”

Acid Regulator/Stomach Ache Relief2%

“my stomach was upset”

Ingredients-Overall2%

“The ingredients on this item are misleading”

Top return reasons

Ease Of Chewing/Swallowing33%

Size-Overall11%

Vitamin10%

Dosage7%

Advertised Vs Actual Product6%