Is calcium magnesium citrate profitable to sell on Amazon United States?

The niche generates $36K/yr across 41 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +19.3%. Flapen's verdict: Worth a look (56/100).

How competitive is the calcium magnesium citrate niche?

19 brands and 665 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 68% of demand.

What do buyers complain about in calcium magnesium citrate?

Top complaints mined from reviews: Ease Of Chewing/Swallowing, Size-Overall, Calcium. The return rate is 0.0%.

When does demand for calcium magnesium citrate peak?

Demand peaks in Jun; the busiest month runs 2.1× the quietest.

What does it cost to enter the calcium magnesium citrate niche?

Listings span $5.33–$46.71; the average listing price is $20.77 (sweet spot $15–$100). The average incumbent carries 2,721 reviews — the moat a new listing must climb.

calcium magnesium citrate

Worth a look

Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$20.77

avg listing price — sweet spot $15–$100

Competition

Great34%

top-5 click share — an open shelf

Price range

Great$5.33–$46.71

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

Conversion

Good5.6%

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

Brand share

Good68%

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

Growth

Okay+19.3%

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

Review moat

Okay2,720.98

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Market size

Bad$36K

$36K/yr · 31K searches

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, calcium magnesium citrate is a $36K/yr Amazon United States market (31K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in Jun. Verdict: Worth a look — 56/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

calcium magnesium citrate market data

Units sold / yr: 2K–3K; avg 0–100/product
Revenue / yr: $42K–$52K; units × avg price
Conversion rate: 5.6%
Avg BSR: #468
Page quality: 0%
Prime: 93%
Sponsored: 71%
Out of stock: 0.0%
Avg brand age: 91 months
Avg seller age: 162 days

Competition & brand share

Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.

Brands

19 rising

Sellers

665

Top-5 brand share

68%

Top 20: 100%

Top-5 click share

34%

Top 20: 79%

Open market

26%

SOLARAY19%
Pure Encapsulations15%
Solgar12%
NOW Foods11%
BlueBonnet10%
Carlyle6%

Demand & seasonality

Weekly Amazon search volume, last 102 weeks — +19.3% search growth over the last 90 days.

Peak months: Jun · busiest ÷ quietest = 2.1×

Open Trend

Top calcium magnesium citrate search terms

calcium magnesium citrate13K/yr +31.4%4.8% conv.
calcium magnesium citrate with vitamin d35K/yr +55.9%0.8% conv.
calcium citrate with magnesium6K/yr -1.4%3.7% conv.
calcium citrate magnesium4K/yr -4.2%7.1% conv.
cal mag citrate3K/yr -4.6%16.7% conv.

All search terms

Top calcium magnesium citrate 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Pure Encapsulations Calcium Magnesium (Citrate) - 240 g Calcium & 240 g Magnesium - Bone Health Support* - Non-GMO & Vegan - 180 Capsules

Pure Encapsulations$32.854.7★1,103 rev

NOW Foods Supplements Calcium & Magnesium 2:1 Ratio High Potency Supports Bone Health* 250 Tablets

NOW Foods$17.854.6★6,215 rev

Carlyle Calcium Magnesium Citrate with Vitamin D3 | 150 Capsules

Carlyle$9.694.7★135 rev

Solgar Calcium Magnesium with Vitamin D3 300 Tablets - Promotes Healthy Bones Supports Nerve & Muscle Function - Highly Absorbable Form - Non-GMO and Gluten Free - 60 Servings

Solgar$22.604.7★1,637 rev

Swanson Calcium Citrate Plus Magnesium - Mineral Supplement Promoting Strong Bones Energy Production & Muscle Relaxation - May Support Cardiovascular Health - (150 Capsules)

Swanson$12.564.6★244 rev

Newest

by launch date

Calcium Citrate 500mg with Magnesium Zinc and Vitamin D3 - Bone Strength & Immune Support Supplement - Supports Healthy Teeth & Muscle Contraction - USP Verified - 500 Tablets

Generic$30.708 rev

5mo ago

Carlyle Calcium Magnesium Citrate with Vitamin D3 | 150 Capsules

Carlyle$9.69135 rev

2y ago

Solaray Calcium Magnesium Citrate 1000mg 1:1 Ratio Bone Strength Supplement Muscle Nerve and Bone Health Support Chelated for High Absorption 60-Day Guarantee 45 Servings 270 VegCaps

SOLARAY$21.31590 rev

3y ago

Pure Encapsulations Calcium Magnesium (Citrate) - 240 g Calcium & 240 g Magnesium - Bone Health Support* - Non-GMO & Vegan - 90 Capsules

Pure Encapsulations$18.951,103 rev

6y ago

Kirkland Signature Calcium Citrate Magnesium and Zinc 500 Tablets

KIRKLAND$18.873,741 rev

7y ago

What buyers say about calcium magnesium citrate

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

What buyers love

Quality-Overall17%

“Excellent, clean, well-made supplement”

Calcium15%

“A Good Calcium”

Vitamin10%

“Good vitamin”

Value For Money8%

“Great Value”

Ease Of Chewing/Swallowing6%

“This is the best for me because easy swallowing”

Taste-Overall4%

“The flavor tastes like Blueberry”

Advertised Vs Actual Product4%

“As advertised”

Ease Of Use3%

“Easy to use”

Joint Pain2%

“this really really helped a lot especially with my joint pain too”

Efficiency2%

“very effective”

What buyers complain about

Ease Of Chewing/Swallowing13%

“Pretty tough chew”

Size-Overall13%

“But smaller isnt always better”

Calcium10%

“I need calcium”

Dosage7%

“Content of each is very low per dosage compared to other brands at the same cost”

Taste-Overall5%

“It tastes disgusting”

Value For Money5%

“Overpriced”

Acid Regulator/Stomach Ache Relief2%

“stomach pains”

Vitamin2%

“I cant take theses huge vitamins”

Quality-Overall2%

“Very bad batch here”

Thickness2%

“Pills are very chunky”

Top return reasons

Calcium22%

Magnesium20%

Vitamin14%

Ingredients-Overall9%

Regulates Digestion7%

Advertised Vs Actual Product5%