Is calcium aspartate anhydrous profitable to sell on Amazon United States?

The niche generates $2K/yr across 5 tracked products. 90-day search growth is +28.6%. Flapen's verdict: Skip it (37/100).

How competitive is the calcium aspartate anhydrous niche?

4 brands and 11 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in calcium aspartate anhydrous?

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

When does demand for calcium aspartate anhydrous peak?

Demand peaks in Nov; the busiest month runs 1.8× the quietest.

What does it cost to enter the calcium aspartate anhydrous niche?

Listings span $10.38–$36.19; the average listing price is $20.27 (sweet spot $15–$100). The average incumbent carries 1,871 reviews — the moat a new listing must climb.

calcium aspartate anhydrous

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$20.27

avg listing price — sweet spot $15–$100

Price range

Great$10.38–$36.19

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

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Growth

Good+28.6%

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

Review moat

Okay1,871.2

avg incumbent reviews — the moat a new listing must climb

Conversion

Bad1.1%

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

Market size

Bad$2K

$2K/yr · 9K searches

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, calcium aspartate anhydrous is a $2K/yr Amazon United States market (9K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Nov. Verdict: Skip it — 37/100.

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

calcium aspartate anhydrous market data

Units sold / yr: 250–500; avg 0–100/product
Revenue / yr: $5K–$10K; units × avg price
Conversion rate: 1.1%
Avg BSR: #2,385
Page quality: 0%
Prime: 80%
Sponsored: 40%
Out of stock: 2.0%
Avg brand age: 101 months
Avg seller age: 188 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

Swanson62%
BulkSupplements22%
New Chapter8%
NCI Advanced Research7%

Demand & seasonality

Weekly Amazon search volume, last 99 weeks — +28.6% search growth over the last 90 days.

Peak months: Nov · busiest ÷ quietest = 1.8×

Open Trend

Top calcium aspartate anhydrous 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 5 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Swanson Calcium Aspartate - Herbal Supplement Promoting Bone Heart & Muscle Health - Natural Formula Promoting Total Body Wellness - (60 Capsules-200mg Each) (2 Pack)

Swanson$18.074.4★257 rev

Swanson Calcium Aspartate - Herbal Supplement Promoting Bone Heart & Muscle Health - Natural Formula Promoting Total Body Wellness - (60 Capsules-200mg Each)

Swanson$10.384.4★257 rev

BulkSupplements.com Calcium Aspartate Powder - Calcium Supplement Bone Health Supplement - Gluten Free 1g per Serving 250g (8.8 oz) (Pack of 1)

BulkSupplements$18.724.0★54 rev

New Chapter Bone Strength Take Care - Bone & Heart Health Supplement - Clinically Studied Plant Calcium from Red Marine Algae - Vegan Organic Gluten Free & Kosher - 120 Slim Tablets

New Chapter$36.194.6★8,776 rev

NCI Dr. Hans Nieper Calcium Aspartate Tablets 350 Mg 100 Count

NCI Advanced Research$17.964.3★12 rev

Newest

by launch date

Swanson Calcium Aspartate - Herbal Supplement Promoting Bone Heart & Muscle Health - Natural Formula Promoting Total Body Wellness - (60 Capsules-200mg Each) (2 Pack)

Swanson$18.07257 rev

1y ago

BulkSupplements.com Calcium Aspartate Powder - Calcium Supplement Bone Health Supplement - Gluten Free 1g per Serving 250g (8.8 oz) (Pack of 1)

BulkSupplements$18.7254 rev

7y ago

New Chapter Bone Strength Take Care - Bone & Heart Health Supplement - Clinically Studied Plant Calcium from Red Marine Algae - Vegan Organic Gluten Free & Kosher - 120 Slim Tablets

New Chapter$36.198,776 rev

8y ago

Swanson Calcium Aspartate - Herbal Supplement Promoting Bone Heart & Muscle Health - Natural Formula Promoting Total Body Wellness - (60 Capsules-200mg Each)

Swanson$10.38257 rev

13y ago

NCI Dr. Hans Nieper Calcium Aspartate Tablets 350 Mg 100 Count

NCI Advanced Research$17.9612 rev

15y ago

What buyers say about calcium aspartate anhydrous

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

What buyers love

Calcium27%

“An awesome form of calcium”

Quality-Overall21%

“Excellent product”

Vitamin6%

“Good supplement”

Ease Of Chewing/Swallowing5%

“Easier to Swallow”

Efficiency4%

“It works”

Advertised Vs Actual Product4%

“As advertised”

Regulates Digestion3%

“I take them daily with no problem digesting”

Strength3%

“so HEALTHY and STRONG”

Ingredients-Overall3%

“A great formulation”

Natural Ingredients2%

“All Natural”

What buyers complain about

Calcium13%

“Why they can't do Calcium in capsules too”

Ease Of Chewing/Swallowing13%

“Difficult to swallow”

Quality-Overall7%

“Not quality”

Vitamin7%

“These are NOT cheap vitamins”

Value For Money6%

“this is not an inexpensive item”

Iron5%

“my blood tests showed low levels of Iron”

Regulates Digestion5%

“Rough in my gut”

Size-Overall5%

“The only thing I dont love is the serving size”

Acid Regulator/Stomach Ache Relief5%

“Causes severe abdominal issues”

Allergies5%

“May cause allergic reaction”

Top return reasons

Calcium50%

Sensitivity-Overall50%

Common questions

Is calcium aspartate anhydrous profitable to sell on Amazon United States?: The niche generates $2K/yr across 5 tracked products. 90-day search growth is +28.6%. Flapen's verdict: Skip it (37/100).
How competitive is the calcium aspartate anhydrous niche?: 4 brands and 11 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in calcium aspartate anhydrous?: Top complaints mined from reviews: Calcium, Ease Of Chewing/Swallowing, Quality-Overall. The return rate is 0.0%.
When does demand for calcium aspartate anhydrous peak?: Demand peaks in Nov; the busiest month runs 1.8× the quietest.
What does it cost to enter the calcium aspartate anhydrous niche?: Listings span $10.38–$36.19; the average listing price is $20.27 (sweet spot $15–$100). The average incumbent carries 1,871 reviews — the moat a new listing must climb.