Is calcium magnesium zinc and vitamin d profitable to sell on Amazon United Kingdom?

The niche generates £110K/yr across 12 tracked products. 90-day search growth is -13.1%. Flapen's verdict: Skip it (41/100).

How competitive is the calcium magnesium zinc and vitamin d niche?

11 brands and 54 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 81% of demand.

What do buyers complain about in calcium magnesium zinc and vitamin d?

Top complaints mined from reviews: Sleep Quality, Magnesium, Functionality-Overall. The return rate is 0.1%.

When does demand for calcium magnesium zinc and vitamin d peak?

Demand peaks in Jan–Nov; the busiest month runs 2.2× the quietest.

What does it cost to enter the calcium magnesium zinc and vitamin d niche?

Listings span £4.87–£14.01; the average listing price is £9.27 (sweet spot $15–$100). The average incumbent carries 3,332 reviews — the moat a new listing must climb.

calcium magnesium zinc and vitamin d

Skip it

Prices mostly outside the sweet spot ($4.87–$14.01) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Incredible17.1%

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

Brand share

Okay81%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay3,332

avg incumbent reviews — the moat a new listing must climb

Avg price

Okay£9.27

avg listing price — sweet spot $15–$100

Market size

Okay£110K

£110K/yr · 69K searches

Competition

Bad73%

top-5 click share — a locked-up shelf

Growth

Bad-13.1%

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

Price range

Bad£4.87–£14.01

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

According to Flapen's Amazon United Kingdom niche tracking, calcium magnesium zinc and vitamin d is a £110K/yr Amazon United Kingdom market (69K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Jan–Nov. Verdict: Skip it — 41/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

calcium magnesium zinc and vitamin d market data

Units sold / yr: 10K–13K; avg 500–750/product
Revenue / yr: £93K–£116K; units × avg price
Conversion rate: 17.1%
Avg BSR: #47
Page quality: 0%
Prime: 100%
Sponsored: 92%
Out of stock: 0.5%
Avg brand age: 58 months
Avg seller age: 164 days

Competition & brand share

The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.

Brands

11 falling

Sellers

Top-5 brand share

81%

Top 20: 100%

Top-5 click share

73%

Top 20: 100%

Open market

14%

WeightWorld32%
Solgar17%
Natures Aid12%
Nu U Nutrition11%
Nutravita9%
Horbäach5%
Open — no brand owns it (5 brands, 14%)

Demand & seasonality

Weekly Amazon search volume, last 101 weeks — -13.1% search growth over the last 90 days.

Peak months: Jan, Nov · busiest ÷ quietest = 2.2×

Open Trend

Top calcium magnesium zinc and vitamin d search terms

calcium magnesium zinc and vitamin d44K/yr -15.3%14.6% conv.
calcium magnesium zinc17K/yr -11.0%14.9% conv.
magnesium zinc and vitamin d5K/yr +13.2%6.6% conv.
magnesium calcium zinc4K/yr -25.6%14.8% conv.

All search terms

Top calcium magnesium zinc and 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.

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

Calcium Magnesium Zinc & Vitamin D Tablets | 1+ Year Supply | 400 Tablets

WeightWorld£12.924.5★13,105 rev

Natures Aid Calcium Magnesium Zinc - Supports Bones Teeth Muscle Function & Immunity - High Potency Natural Immune Health Supplement - Vegan Non-GMO Gluten-Free - 90 Tablets

Natures Aid£5.824.5★4,304 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

Solgar Calcium Magnesium Plus Zinc Tablets - Pack of 100 - Healthy Bones Teeth & Muscles - Supports Health of Nervous System - Vegan

Solgar£6.784.6★3,806 rev

Nutravita Calcium Magnesium & Zinc with Vitamin D Copper Selenium Boron and Manganese - 365 Tablets - Calcium Magnesium & Zinc Supplment

Nutravita£13.064.5★7,905 rev

Newest

by launch date

Horbäach£5.56161 rev

2y ago

Calcium Magnesium Zinc and Vitamin D Plus Vitamin K2 MK-7 Supplement - 180 Vegan Tablets - High Strength Calcium Tablets Complex with Vitamin K2 Copper Manganese Selenium & Boron - UK Made

Supplement Tree£8.27256 rev

2y ago

Calcium Magnesium Zinc and Vitamin D Supplement - 120 High Strength Tablets Supplement with Magnesium Vitamin D Zinc Tablets Complex Made in The UK by New Leaf

NEW LEAF PRODUCTS£7.27414 rev

3y ago

Holland & Barrett Calcium + Magnesium & Vitamin D 180 Tablets

Holland & Barrett£8.63183 rev

3y ago

Calcium Magnesium Zinc & Vitamin D Tablets | 1+ Year Supply | 400 Tablets

WeightWorld£12.9213,105 rev

5y ago

What buyers say about calcium magnesium zinc and vitamin d

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

What buyers love

Sleep Quality25%

“HELPS WITH SLEEP”

Quality-Overall15%

“Excellent product”

Value For Money10%

“Good value for money”

Magnesium9%

“best magnesium”

Advertised Vs Actual Product5%

“As Advertised”

Muscle Pain Relief4%

“helps muscle cramps”

Efficiency4%

“Works perfectly”

Vitamin3%

“The supplements really work”

Ease Of Chewing/Swallowing3%

“i've found no problem in swallowing them”

Ease Of Use2%

“Easy to use”

What buyers complain about

Sleep Quality14%

“still cant sleep”

Magnesium8%

“This magnesium does not work”

Functionality-Overall7%

“These do not work as intended”

Size-Overall7%

“Size big”

Acid Regulator/Stomach Ache Relief6%

“Gives you stomach cramps”

Dosage5%

“The dosage is far too high”

Side Effects5%

“Will make you ill”

Quality-Overall3%

“Rubbish”

Ease Of Chewing/Swallowing3%

“A hard swallow”

Value For Money3%

“Waste of money”

Top return reasons

Joint Pain50%

Magnesium50%

Common questions

Is calcium magnesium zinc and vitamin d profitable to sell on Amazon United Kingdom?: The niche generates £110K/yr across 12 tracked products. 90-day search growth is -13.1%. Flapen's verdict: Skip it (41/100).
How competitive is the calcium magnesium zinc and vitamin d niche?: 11 brands and 54 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 81% of demand.
What do buyers complain about in calcium magnesium zinc and vitamin d?: Top complaints mined from reviews: Sleep Quality, Magnesium, Functionality-Overall. The return rate is 0.1%.
When does demand for calcium magnesium zinc and vitamin d peak?: Demand peaks in Jan–Nov; the busiest month runs 2.2× the quietest.
What does it cost to enter the calcium magnesium zinc and vitamin d niche?: Listings span £4.87–£14.01; the average listing price is £9.27 (sweet spot $15–$100). The average incumbent carries 3,332 reviews — the moat a new listing must climb.