calcium without vitamin d
Worth a lookShows low returns (0.0%), but a small market ($76K/yr) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$18.91avg listing price — sweet spot $15–$100
Conversion
Good6.9%search→purchase rate — share of searches ending in a sale
Price range
Good$5.93–$39.21cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good66%top-5 brand share — brands hold most of the demand
Competition
Okay55%top-5 click share — leaders hold, buyers still browse
Growth
Okay+10.9%90-day search growth — must beat 0% to launch
Review moat
Okay3,655.39avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$76K$76K/yr · 59K searches
According to Flapen's Amazon United States niche tracking, calcium without vitamin d is a $76K/yr Amazon United States market (59K searches/yr). The top 5 brands hold 66% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
calcium without vitamin d market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $57K–$76K
- units × avg price
- Conversion rate
- 6.9%
- Avg BSR
- #170
- Page quality
- 0%
- Prime
- 96%
- Sponsored
- 70%
- Out of stock
- 0.4%
- Avg brand age
- 96 months
- Avg seller age
- 153 days
Competition & brand share
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.Brands
18 falling
Sellers
115
Top-5 brand share
66%
Top 20: 100%
Top-5 click share
55%
Top 20: 96%
Open market
29%
- 21st Century25%
- Pure Encapsulations17%
- SOLARAY12%
- Generic6%
- Zoo Med5%
- MAJOR5%
Demand
Weekly Amazon search volume, last 19 weeks — +10.9% search growth over the last 90 days.Top calcium without vitamin d search terms
- calcium without d316K/yr
- calcium without vitamin d20K/yr
- calcium only supplement6K/yr
- plain calcium4K/yr
- calcium without vitamin d36K/yr
- calcium only4K/yr
- calcium no vitamin d3K/yr
Top calcium without vitamin d 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 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
21st Century Calcium 600 mg Supplement (400 Tablets) Vegan-Friendly Bone Strength Calcium Supplement Non-GMO & Gluten-Free Calcium Carbonate No Artificial Flavors Suitable for Men & Women
21st Century$11.904.7★6,539 rev
Pure Encapsulations Calcium (Citrate) - Supplement for Bone Teeth Colon and Cardiovascular Health Support* - with Premium Calcium Citrate - 60 Capsules
Pure Encapsulations$13.274.7★5,961 rev
Solaray Calcium Citrate 1000mg - Chelated Calcium Supplement - Supports Bone Strength and Healthy Teeth - Easy to Digest - Vegan - 30 Servings 120 VegCaps
SOLARAY$14.334.4★5,542 rev
Zoo Med Reptile Calcium without Vitamin D3 8-Ounce
Zoo Med$7.694.7★6,055 rev
Pure Encapsulations Calcium (Citrate) - Supplement for Bone Teeth Colon and Cardiovascular Health Support* - with Premium Calcium Citrate - 180 Capsules
Pure Encapsulations$31.394.7★5,961 rev
Newest
by launch date
Pure Calcium Citrate 1200 mg Gummies for Adults Kids High Absorption Calcium Supplements for Women & Men Sugar Free Non-GMO Gluten Free Supports Bone Teeth Muscle & Immune - Peach Flavor 2 pack.
Herbance$29.47139 rev
FREEDA Calcium 600 mg Bone Joint and Teeth Support 600mg Pure Calcium Supplements for Women & Men Healthy Muscle and Nerve Function GF Easy-to-Swallow Coated Tablets (100 Ct)
FREEDA$15.6239 rev
![NatureWise Calcium Citrate 500mg Capsules - Supplement for Bone Health - Easy to Digest & Absorb - Vegan Non-GMO Gluten-Free - 90 Count[30-Day Supply]](https://m.media-amazon.com/images/I/41Vw+Hdvp6L.jpg)
NatureWise Calcium Citrate 500mg Capsules - Supplement for Bone Health - Easy to Digest & Absorb - Vegan Non-GMO Gluten-Free - 90 Count[30-Day Supply]
NatureWise$13.79403 rev
Calcium Citrate 600mg Tablets - Pure Calcium Citrate Supplement 300 Count - Supports Bone Health and Wellness Citrato de Calcio High Absorption Calcium 600 mg
Generic$24.96132 rev
duwhot Calcium Citrate Gummies Chewable Calcium Citrate 1000mg For Bone Muscle & Immune Support High Absorption Calcium Supplements for Women & Men Kids Blueberry Flavor Vegan Organic 60 Chews
duwhot$21.58560 rev
Trending
90-day click momentumFREEDA Calcium 600 mg Bone Joint and Teeth Support 600mg Pure Calcium Supplements for Women & Men Healthy Muscle and Nerve Function GF Easy-to-Swallow Coated Tablets (100 Ct)
FREEDA$15.624.5★
Calciven Natural Bone Support Supplement Vegetarian Gluten-Free
Calciven$39.214.4★
Solaray Calcium Citrate 1000mg - Chelated Calcium Supplement - Supports Bone Strength and Healthy Teeth - Easy to Digest - Vegan - 60 Servings 240 VegCaps
SOLARAY$19.294.4★
Spring - Valley Calcium 600mg Natural Bone Health Calcium - 100 Tablets Pack of 3
Generic$30.824.7★
Zoo Med Reptile Calcium without Vitamin D3 8-Ounce
Zoo Med$7.694.7★
What buyers say about calcium without vitamin d
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent calcium supplement”
“Excellent product”
“DECENT PRICE”
“Good vitamin”
“Chewables are the answer”
“As advertised”
“Ease of use”
“Most effective for bone support”
“Great blueberry taste”
“Effective”
What buyers complain about
“Not enough calcium for me”
“Those supplements are low-dose”
“Very large pill”
“Expensive”
“so I wasn't really keen on swallow it”
“upset my stomach”
“Wrong vitamins, as I can't swallow that type”
“caused significant constipation”
“experiencing clarity side effects”
“Deceptive Marketing”
Top return reasons
Common questions
- Is calcium without vitamin d profitable to sell on Amazon United States?
- The niche generates $76K/yr across 23 tracked products. 90-day search growth is +10.9%. Flapen's verdict: Worth a look (52/100).
- How competitive is the calcium without vitamin d niche?
- 18 brands and 115 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 66% of demand.
- What do buyers complain about in calcium without vitamin d?
- Top complaints mined from reviews: Calcium, Dosage, Size-Overall. The return rate is 0.0%.
- What does it cost to enter the calcium without vitamin d niche?
- Listings span $5.93–$39.21; the average listing price is $18.91 (sweet spot $15–$100). The average incumbent carries 3,655 reviews — the moat a new listing must climb.