Is vitamin c tablets for pool stains profitable to sell on Amazon United States?

The niche generates $32K/yr across 12 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +533.1%. Flapen's verdict: Worth a look (55/100).

How competitive is the vitamin c tablets for pool stains niche?

9 brands and 52 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 88% of demand.

What do buyers complain about in vitamin c tablets for pool stains?

Top complaints mined from reviews: Stain Resistance, Functionality-Overall, Rusts/Corrodes. The return rate is 0.1%.

What does it cost to enter the vitamin c tablets for pool stains niche?

Listings span $6.16–$47.98; the average listing price is $23.34 (sweet spot $15–$100). The average incumbent carries 3,739 reviews — the moat a new listing must climb.

vitamin c tablets for pool stains

Worth a look

Shows demand growing +533.1% this quarter, but a small market ($32K/yr) keeps it on the watch list.

Growth

Incredible+533.1%

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

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Avg price

Incredible$23.34

avg listing price — sweet spot $15–$100

Conversion

Great8.7%

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

Price range

Great$6.16–$47.98

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Brand share

Okay88%

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

Review moat

Okay3,739

avg incumbent reviews — the moat a new listing must climb

Competition

Bad72%

top-5 click share — a locked-up shelf

Market size

Bad$32K

$32K/yr · 16K searches

Signals Trending

According to Flapen's Amazon United States niche tracking, vitamin c tablets for pool stains is a $32K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 88% of demand. Verdict: Worth a look — 55/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

vitamin c tablets for pool stains market data

Units sold / yr: 1K–2K; avg 100–250/product
Revenue / yr: $29K–$35K; units × avg price
Conversion rate: 8.7%
Avg BSR: #171
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 76 months
Avg seller age: 156 days

Competition & brand share

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 falling

Sellers

Top-5 brand share

88%

Top 20: 100%

Top-5 click share

72%

Top 20: 100%

Open market

Bosh Chemical39%
VITA-C-BATH17%
Spicy World14%
Essential Values12%
Bronson6%
Amazon Elements5%
Open — no brand owns it (3 brands, 7%)

Top vitamin c tablets for pool stains 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

Bosh Chemical Vanish Pool & Spa Stain Remover (2LBS)- Natural Safe Citrus Based Works Excellent on Vinyl Fiberglass and Metals Removes Rust and Other Tough Stains

Bosh Chemical$19.994.0★2,415 rev

Spicy World Ascorbic Acid 1 LB Bulk Bag - Pure Vitamin C Powder - 100% Pure Food Grade Can be Used for Canning Fruit Pools - USP Grade

Spicy World$9.864.7★610 rev

Vitamin C Bath Tablets 1000mg for Dry Itchy & Sensitive Skin 20 Tablets

VITA-C-BATH$10.224.4★79 rev

Essential Values Swimming Pool & Spa Stain Remover (2 LBS) - Compatible with Vinyl Liners Fiberglass & Metals - Effective Formula Removes Rust & Tough Stains

Essential Values$20.234.1★2,165 rev

Bronson Vitamin C 1000mg Premium Non-GMO Ascorbic Acid Tablets 100 Count

Bronson$10.014.7★2,671 rev

Newest

by launch date

Effervescent Vitamin C Dechlorination Tablets 1000mg 100 Count White

VITA-C-BATH$25.924 rev

8mo ago

Vitamin C Bath Tablets 1000mg for Dry Itchy & Sensitive Skin 20 Tablets

VITA-C-BATH$10.2279 rev

2y ago

Luonix Vitamin C Powder 8 Lb

Luonix$40.09286 rev

2y ago

Spicy World Ascorbic Acid 1 LB Bulk Bag - Pure Vitamin C Powder - 100% Pure Food Grade Can be Used for Canning Fruit Pools - USP Grade

Spicy World$9.86610 rev

4y ago

Bosh Chemical Vanish Pool & Spa Stain Remover 2 Pack (4LBS)- Natural Safe Citrus Based Works Excellent on Vinyl Fiberglass and Metals Removes Rust and Other Tough Stains

Bosh Chemical$36.892,219 rev

6y ago

What buyers say about vitamin c tablets for pool stains

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

What buyers love

Quality-Overall21%

“Meets all quality needs”

Value For Money14%

“Worth it”

Vitamin12%

“Take your vitamins”

Advertised Vs Actual Product8%

“As advertised”

Ease Of Use5%

“convenient to use”

Ease Of Cleaning4%

“Great for cleaning, preserving food and making homemade spices”

Ease Of Chewing/Swallowing3%

“The capsules are easy to take”

Product Condition3%

“it looks brand new”

Efficiency2%

“It does the job”

Taste-Overall2%

“Great taste”

What buyers complain about

Stain Resistance27%

“My staining was from leaves”

Functionality-Overall16%

“DIDNT WORK”

Rusts/Corrodes6%

“So I had rust”

Color5%

“There was yellow”

Value For Money4%

“Just an average bit like the rest just somewhat cheaper”

Size-Overall4%

“The bag is a lot smaller than I expected”

Vitamin4%

“Take your vitamin C. I ordered these by mistake”

Ease Of Chewing/Swallowing4%

“Impossible to swallow”

Taste-Overall3%

“Taste disgusting”

Ease Of Cleaning2%

“Like all cleaners it does affect pool chemistry”

Top return reasons

Stain Resistance37%

Advertised Vs Actual Product20%

Functionality-Overall14%

Instructions/User Manual/Troubleshooting6%

Leak-Proof5%

Value For Money4%

Defective Material/Parts3%