calcium and vitamin d tablets
Skip itSoft demand (-20.9% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Incredible12.1%search→purchase rate — share of searches ending in a sale
Brand share
Good67%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay2,448.8avg incumbent reviews — the moat a new listing must climb
Market size
Okay£155K£155K/yr · 134K searches
Competition
Okay66%top-5 click share — leaders hold, buyers still browse
Avg price
Okay£9.54avg listing price — sweet spot $15–$100
Price range
Bad£2.50–£17.58cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-20.9%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, calcium and vitamin d tablets is a £155K/yr Amazon United Kingdom market (134K searches/yr). The top 5 brands hold 67% of demand. Verdict: Skip it — 47/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
calcium and vitamin d tablets market data
- Units sold / yr
- 15K–20K
- avg 750–1,000/product
- Revenue / yr
- £143K–£191K
- units × avg price
- Conversion rate
- 12.1%
- Avg BSR
- #50
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 75%
- Out of stock
- 0.0%
- Avg brand age
- 61 months
- Avg seller age
- 161 days
Competition & brand share
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.Brands
19 rising
Sellers
87
Top-5 brand share
67%
Top 20: 100%
Top-5 click share
66%
Top 20: 100%
Open market
28%
- Vitabiotics Ultra25%
- Vitamin Store20%
- NEW LEAF PRODUCTS8%
- AA Merchant7%
- Nu U Nutrition7%
- WeightWorld5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -20.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top calcium and vitamin d tablets search terms
- calcium and vitamin d tablets87K/yr
- vitamin d and calcium18K/yr
- calcium and vitamin d9K/yr
- vitamin d and calcium tablets6K/yr
- calcium vitamin d4K/yr
- vitamin d calcium5K/yr
- vitamin d with calcium3K/yr
- adcal2K/yr
Top calcium and vitamin d tablets 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
Calcium and Vitamin D Tablets Vitabiotics Ultra (Pack of 1)
Vitabiotics Ultra£2.504.5★3,038 rev
Vitamin Store Calcium + Vitamin D Food Supplement 180 Tablets per Tub Pack of 2 Tubs 6 Months Supply
Vitamin Store£7.384.6★864 rev
2 x Calcium & Vitamin D Tablets 200 Tablets High Strength Supplement for Bone Health Immune Support & Muscle Function Vegetarian Easy-to-Swallow Essential Daily Calcium and Vitamin D3.
AA Merchant£6.724.5★129 rev
Calcium and Vitamin D3 Tablets - Calcium Supplement - 120 High Strength Tablets with Vitamin D3 - Made in The UK by New Leaf Bone & Muscle Health
NEW LEAF PRODUCTS£8.364.4★250 rev
Nu U Nutrition Calcium Magnesium Zinc & Vitamin D Supplement - 365 Vegetarian Tablets - High Strength Osteo Complex with Selenium Copper Manganese & Boron - 6 Month Supply
Nu U Nutrition£14.014.5★4,167 rev
Newest
by launch date
Calcium Supplement with Calcium Citrate Magnesium Zinc and Vitamin D3 K2 to Support Strong Bones Muscle Function Energy Metabolism and Overall Health (60 Servings 2 Month Supply)
Nootro Labs£13.4747 rev
Calcium with Magnesium Zinc & Vitamin D - 90 Tablets for 3 Months - Bone Muscle & Immune Support - Energy & Metabolism Boost - Gluten & Lactose Free - High Strength Supplement - Vitavea
Vitavea£8.8170 rev
Calcium and Vitamin D Tablets | 800mg Calcium & 200iu Vitamin D3 | Chewable Vegan Supplement | 120 Tablets - Tropical Berry Flavour | by Horbaach
Horbäach£6.6879 rev
Calcium 1000mg & Vitamin D3 400iu | Supports Bone & Teeth Health | Contributes to Normal Muscle Function | Vegan & Vegetarian Friendly | 180 Tablets = 3 Months Supply | GMP-Certified & UK-Made
Simply Supplements£10.0633 rev
Calcium and Vitamin D3 Tablets - Calcium Supplement - 120 High Strength Tablets with Vitamin D3 - Made in The UK by New Leaf Bone & Muscle Health
NEW LEAF PRODUCTS£8.36250 rev
Trending
90-day click momentum
Calcium and Vitamin D3 Tablets - Calcium Supplement - 240 High Strength Calcium Tablets Supplement Calcium Vitamin D3 Tablets - Calcium Complex Made in The UK by New Leaf
NEW LEAF PRODUCTS£14.514.4★
Calcium Supplement with Calcium Citrate Magnesium Zinc and Vitamin D3 K2 to Support Strong Bones Muscle Function Energy Metabolism and Overall Health (60 Servings 2 Month Supply)
Nootro Labs£13.474.4★
Calcium & Vitamin D3 500mg & 200IU High Strength Supplements Maintaining Healthy Bones Teeth & Nails | 60 Capsules
NutriVolv£3.164.6★
Holland & Barrett Calcium + Magnesium & Vitamin D 180 Tablets
Holland & Barrett£8.634.5★
Calcium with Magnesium Zinc & Vitamin D - 90 Tablets for 3 Months - Bone Muscle & Immune Support - Energy & Metabolism Boost - Gluten & Lactose Free - High Strength Supplement - Vitavea
Vitavea£8.814.2★
What buyers say about calcium and vitamin d tablets
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“Best price”
“Effective vitamin”
“Chewable”
“As advertised”
“which is really convenient”
“Very Effective”
“dont leave any aftertaste”
“The calcium tablets worked effectively”
“Dosage was convenient for me as well”
What buyers complain about
“Tablet is quite large”
“it looks as if the dosage is very high”
“Whatever is in these either isn't Vitamin D or if it is”
“A hard swallow”
“doesnt have these effects”
“Doesn't seem to work”
“Other products in the Nutrition Geeks line are a scam”
“Very misleading, seems like to get 800 mg of calcium you have to take 2 a day”
“and NONE of them are what they claim”
“which made me question its quality from the start”
Top return reasons
Common questions
- Is calcium and vitamin d tablets profitable to sell on Amazon United Kingdom?
- The niche generates £155K/yr across 20 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -20.9%. Flapen's verdict: Skip it (47/100).
- How competitive is the calcium and vitamin d tablets niche?
- 19 brands and 87 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 67% of demand.
- What do buyers complain about in calcium and vitamin d tablets?
- Top complaints mined from reviews: Size-Overall, Dosage, Vitamin. The return rate is 0.1%.
- When does demand for calcium and vitamin d tablets peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the calcium and vitamin d tablets niche?
- Listings span £2.50–£17.58; the average listing price is £9.54 (sweet spot $15–$100). The average incumbent carries 2,449 reviews — the moat a new listing must climb.