coral calcium
Worth a lookShows low returns (0.0%), but strong incumbent ratings (4.7★) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$21.69avg listing price — sweet spot $15–$100
Conversion
Great10.0%search→purchase rate — share of searches ending in a sale
Price range
Great$9.97–$39.12cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good668.45avg incumbent reviews — the moat a new listing must climb
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Competition
Okay63%top-5 click share — leaders hold, buyers still browse
Growth
Okay+8.4%90-day search growth — must beat 0% to launch
Market size
Okay$118K$118K/yr · 54K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, coral calcium is a $118K/yr Amazon United States market (54K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Sep–Oct. Verdict: Worth a look — 52/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
coral calcium market data
- Units sold / yr
- 6K–8K
- avg 250–500/product
- Revenue / yr
- $130K–$174K
- units × avg price
- Conversion rate
- 10.0%
- Avg BSR
- #3,414
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 70%
- Out of stock
- 7.4%
- Avg brand age
- 120 months
- Avg seller age
- 172 days
Competition & brand share
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.Brands
13 falling
Sellers
32
Top-5 brand share
79%
Top 20: 100%
Top-5 click share
63%
Top 20: 100%
Open market
15%
- NOW Foods28%
- Barefoot Coral Calcium Complete24%
- Horbäach13%
- Coral White9%
- BOB'S BEST6%
- Puritan's Pride6%
- Open — no brand owns it (7 brands, 15%)
Demand & seasonality
Weekly Amazon search volume, last 100 weeks — +8.4% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 1.7×
Top coral calcium 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.
All 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
NOW Foods Supplements Coral Calcium 1 000 mg Bone Health* Healthy pH Balance* 250 Veg Capsules
NOW Foods$21.614.7★1,451 rev
Barefoot Coral Calcium Complete 90 Count - Coral Calcium 1500mg Capsules - Bone Health - 72 Trace Minerals Calcium Magnesium & Vitamin D3 - Developed by Bob Barefoot
Barefoot Coral Calcium Complete$19.794.6★2,053 rev
Horbach Coral Calcium 1500mg Capsules | 150 Count | Plus Magnesium
Horbäach$9.974.7★829 rev
NOW Foods Supplements Coral Calcium Plus Bone Health* Healthy pH Balance* 100 Veg Capsules
NOW Foods$11.834.8★537 rev
Barefoot Coral Calcium Complete 240 Count - Coral Calcium 1500mg Capsules - Bone Health - 72 Trace Minerals Calcium Magnesium & Vitamin D3 - Developed by Bob Barefoot
Barefoot Coral Calcium Complete$39.124.6★2,053 rev
Newest
by launch date
GNC Coral Calcium 400mg Supplement Supports Strong Bones 90 Servings
GNC$25.83150 rev
Vitapia Coral Calcium Powder 1000mg Capsules for Overall Health Bone Health PH Level Balance Trace Minerals Support - 120 Veggie Capsules - Non-GMO & Gluten-Free Supplement
Vitapia$21.85188 rev
Horbach Coral Calcium 1500mg Capsules | 150 Count | Plus Magnesium
Horbäach$9.97829 rev
Daily Health Coral Calcium Pure Okinawa - Marine-Grade Supplement with 72 Trace Minerals - 1475mg 90 Vegetable Capsules (1 Month Supply)
Daily Health$20.28108 rev
Piping Rock Coral Calcium 1000 mg | 200 Capsules | Bone Formula Complex
Piping Rock$13.9859 rev
Trending
90-day click momentumNOW Foods Supplements Coral Calcium Plus Bone Health* Healthy pH Balance* 100 Veg Capsules
NOW Foods$11.834.8★
Coral Complex 3 Calcium Supplement Vitamin D3 & Magnesium 900 mg Bioavailable Coral Calcium for Bone Strength Joint Support & pH Balance Trace Minerals Non-GMO 300 Veg Capsules
Coral White$18.404.7★
Source Naturals Coral Calcium Powder 4 Ounce
Source Naturals$11.944.6★
21st Century Coral Calcium Capsules 1000 mg 120 Count (22777)
21st Century$13.774.6★
Coral Ecopure Powder Coral Calcium Powder Supplement with Coral Minerals - 16 Ounces
Coral White$34.374.6★
What buyers say about coral calcium
What buyers praise and complain about, mined from review topics.What buyers love
“I use Coral calcium as it's absorbed very well”
“Excellent Quality”
“Good price”
“Fast acting”
“It is one of the best products I recommended to all of my clients for hot flashes, body aches blood pressure basically almost everything bone density love love love love, love”
“Easy to swallow”
“Great for your knees and joints”
“Alkalizes very well”
“Iv'e taken them for years”
“has the added benefits of all 72 trace or micro nutrients”
What buyers complain about
“Sadly I didn't realize before I purchased them that a daily dose of calcium for this brand is FOUR pills”
“False description”
“However, serving instruction indicate to take two capsules daily at 350 mg per capsule”
“not as good as other brand”
“There is way less pills in this bottle the magnesium i bought”
“I had immediate bloating in my stomach”
“Very uncomfortable feeling”
“Very uncomfortable feeling”
Common questions
- Is coral calcium profitable to sell on Amazon United States?
- The niche generates $118K/yr across 20 tracked products. 90-day search growth is +8.4%. Flapen's verdict: Worth a look (52/100).
- How competitive is the coral calcium niche?
- 13 brands and 32 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 79% of demand.
- What do buyers complain about in coral calcium?
- Top complaints mined from reviews: Calcium, Advertised Vs Actual Product, Dosage. The return rate is 0.0%.
- When does demand for coral calcium peak?
- Demand peaks in Sep–Oct; the busiest month runs 1.7× the quietest.
- What does it cost to enter the coral calcium niche?
- Listings span $9.97–$39.12; the average listing price is $21.69 (sweet spot $15–$100). The average incumbent carries 668 reviews — the moat a new listing must climb.