calcium powder
Skip itBrand-locked demand (top 5 brands take 92% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Great7.5%search→purchase rate — share of searches ending in a sale
Avg price
Great$15.25avg listing price — sweet spot $15–$100
Price range
Good$5.81–$31.39cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Okay2,587.15avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Okay$114K$114K/yr · 99K searches
Growth
Okay+1.8%90-day search growth — must beat 0% to launch
Competition
Okay70%top-5 click share — a locked-up shelf
Brand share
Bad92%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, calcium powder is a $114K/yr Amazon United States market (99K searches/yr). The top 5 brands hold 92% of demand. Demand peaks in Jan–Feb–Sep–Oct–Nov–Dec. Verdict: Skip it — 43/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
calcium powder market data
- Units sold / yr
- 6K–8K
- avg 250–500/product
- Revenue / yr
- $92K–$122K
- units × avg price
- Conversion rate
- 7.5%
- Avg BSR
- #464
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 60%
- Out of stock
- 17.3%
- Avg brand age
- 89 months
- Avg seller age
- 165 days
Competition & brand share
The top 5 products capture 70% of clicks — a locked-up shelf that new listings rarely crack.Brands
10 rising
Sellers
45
Top-5 brand share
92%
Top 20: 100%
Top-5 click share
70%
Top 20: 100%
Open market
6%
- NOW Foods69%
- Nutricost11%
- Pure Encapsulations6%
- SOLARAY4%
- Herbs Botanica2%
- PURE ORIGINAL INGREDIENTS2%
- Open — no brand owns it (4 brands, 6%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +1.8% search growth over the last 90 days.Peak months: Jan, Feb, Sep, Oct, Nov, Dec · busiest ÷ quietest = 3.6×
Top calcium powder search terms
- calcium powder40K/yr
- now calcium citrate25K/yr
- now calcium citrate capsules4K/yr
- vegan calcium powder4K/yr
- calcium powder for women6K/yr
- calcium citrate now5K/yr
- now foods calcium citrate4K/yr
- calcium powder supplement5K/yr
- calcio en polvo3K/yr
- powdered calcium2K/yr
Top calcium powder 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 Calcium Citrate Powder Highly Bioavailable Calcium Supports Bone Health* 8-Ounce
NOW Foods$10.654.6★1,573 rev
NOW Foods Supplements Calcium Citrate with Vitamin D Magnesium Zinc Copper and Manganese 250 Tablets
NOW Foods$24.474.6★1,217 rev
NOW Foods Supplements Calcium Carbonate Powder High Percentage of Calcium Supports Bone Health* 12-Ounce
NOW Foods$9.494.7★2,672 rev
Nutricost Calcium Carbonate Powder 500 Grams
Nutricost$13.844.6★1,072 rev
NOW Foods Supplements Calcium & Magnesium 2:1 Ratio High Potency Supports Bone Health* 250 Tablets
NOW Foods$17.824.6★6,212 rev
Newest
by launch date
Vitamatic Calcium Carbonate Powder 500 g (17.6 oz) Unflavored Dietary Supplement Powder Non-GMO
Vitamatic$11.8030 rev
Herbs Botanica Calcium Carbonate Powder Food Grade Calcium Supplement for Cooking and Baking Antacid DIY Toothpaste 3.5 oz
Herbs Botanica$5.8198 rev
Pure Encapsulations Calcium (Citrate) - Supplement for Bone Teeth Colon and Cardiovascular Health Support* - with Premium Calcium Citrate - 60 Capsules
Pure Encapsulations$13.275,961 rev
Solaray Calcium Citrate 1000mg - Chelated Calcium Supplement - Supports Bone Strength and Healthy Teeth - Easy to Digest - Vegan - 68 Servings 275 VegCaps
SOLARAY$23.295,542 rev
CalMag Plus Calcium Magnesium Powder for Sleep & Calm Orange Flavor
Whole Family Naturals$27.14383 rev
Trending
90-day click momentumVitamatic Calcium Carbonate Powder 500 g (17.6 oz) Unflavored Dietary Supplement Powder Non-GMO
Vitamatic$11.804.8★
Flukers Reptile Calcium Supplement Without Vitamin D3
Fluker's$5.934.8★
NOW Foods Supplements Calcium Citrate with Vitamin D Magnesium Zinc Copper and Manganese 250 Tablets
NOW Foods$24.474.6★
Nutricost Calcium Citrate Powder (250 Grams) Unflavored
Nutricost$11.924.4★
Pure Encapsulations Calcium (Citrate) - Supplement for Bone Teeth Colon and Cardiovascular Health Support* - with Premium Calcium Citrate - 60 Capsules
Pure Encapsulations$13.274.7★
What buyers say about calcium powder
What buyers praise and complain about, mined from review topics.What buyers love
“Wonderful calcium supplement”
“Good quality and fine powder”
“Great Value”
“High Quality and Easy to Digest”
“As advertised”
“Great supplement”
“Its simple to use”
“very effective”
“Easy to mix”
“instant relief to the reflux”
What buyers complain about
“I need extra calcium”
“1000mg per serving----- misleading”
“These gel caps are very large”
“Very bad batch here”
“I do have stomach sensitivities”
“so I wasn't really keen on swallow it”
“Too pricey”
“tasteless”
“Heart hurts”
“Caused acid reflux”
Top return reasons
Common questions
- Is calcium powder profitable to sell on Amazon United States?
- The niche generates $114K/yr across 20 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +1.8%. Flapen's verdict: Skip it (43/100).
- How competitive is the calcium powder niche?
- 10 brands and 45 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 92% of demand.
- What do buyers complain about in calcium powder?
- Top complaints mined from reviews: Calcium, Dosage, Size-Overall. The return rate is 0.0%.
- When does demand for calcium powder peak?
- Demand peaks in Jan–Feb–Sep–Oct–Nov–Dec; the busiest month runs 3.6× the quietest.
- What does it cost to enter the calcium powder niche?
- Listings span $5.81–$31.39; the average listing price is $15.25 (sweet spot $15–$100). The average incumbent carries 2,587 reviews — the moat a new listing must climb.