Algae Calcium
Algae Calcium shows low returns (0.0%), but brand-locked demand (top 5 brands take 98% of clicks) keeps it on the watch list.
Flapen Score
Top 32% of 14,768 Health & Household niches · +4 vs the category median of 49
Is Algae Calcium profitable on Amazon?
According to Flapen's Amazon United States niche tracking, Algae Calcium is a $3.8M/yr Amazon United States market (531K searches/yr). The top 5 brands hold 98% of demand. Verdict: Worth a look — 53/100.
Algae Calcium: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Worth a look. Search demand moved +10.9% over the last 90 days and 8.2% of searches end in a purchase.
$3.8M
revenue / yr
Who owns the niche?
The top 5 brands hold 98% of demand, so 2% of the market is open.
2%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.5★ — the gap to enter on.
0/100
page quality · 15 products
Top Algae Calcium products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
ALGAECAL Plant Based Calcium Supplement for Bone Strength 90 Caps 1 Pack
- Price
- $54.22
- Rating
- 4.6/5
- Reviews
- 1,325
- Age
- 4y ago

ALGAECAL Plus Calcium Supplement for Bone Density with D3 K2 120 Caps
- Price
- $80.34
- Rating
- 4.6/5
- Reviews
- 1,860
- Age
- 4y ago

ALGAECAL Bone Builder Pack Calcium + Strontium for Bone Density 1 Month
- Price
- $110.01
- Rating
- 4.5/5
- Reviews
- 2,216
- Age
- 7y ago

ALGAECAL Collagen Peptides Skin Joint Bone Benefits 30 Servings 1 Pack
- Price
- $58.76
- Rating
- 4.5/5
- Reviews
- 1,442
- Age
- 2y ago

ALGAECAL Plus Calcium Supplement for Bone Density D3 K2 120 Caps 3 Packs
- Price
- $213.62
- Rating
- 4.6/5
- Reviews
- 1,860
- Age
- 7y ago
Trending
90-day click momentum
AlgaeCal Magnesium Relax for Sleep Stress & Cortisol 60 Caps 2 Packs
- Price
- $54.88
- Rating
- 4.3/5
- Reviews
- 144
- Age
- 9mo ago

ALGAECAL Plus Calcium Supplement for Bone Density D3 K2 120 Caps 3 Packs
- Price
- $213.62
- Rating
- 4.6/5
- Reviews
- 1,860
- Age
- 7y ago

ALGAECAL Plant Based Calcium Supplement for Bone Strength 90 Caps 3 Packs
- Price
- $148.31
- Rating
- 4.6/5
- Reviews
- 1,325
- Age
- 4y ago

ZAB Algae Calcium Supplement Plant Based with Vitamin D3 & K2 MK7 Magnesium Calcium Complex for Daily Bone Health Support & Strength 90 Capsules 45-Day Supply
- Price
- $28.45
- Rating
- 4.2/5
- Reviews
- 37
- Age
- 6mo ago

ALGAECAL Plant Based Calcium Supplement for Bone Strength 90 Caps 1 Pack
- Price
- $54.22
- Rating
- 4.6/5
- Reviews
- 1,325
- Age
- 4y ago
Newest
by launch date
ZAB Algae Calcium Supplement Plant Based with Vitamin D3 & K2 MK7 Magnesium Calcium Complex for Daily Bone Health Support & Strength 90 Capsules 45-Day Supply
- Price
- $28.45
- Rating
- 4.2/5
- Reviews
- 37
- Age
- 6mo ago

AlgaeCal Magnesium Relax for Sleep Stress & Cortisol 60 Caps 2 Packs
- Price
- $54.88
- Rating
- 4.3/5
- Reviews
- 144
- Age
- 9mo ago

ALGAECAL Collagen Peptides Skin Joint Bone Benefits 30 Servings 3 Packs
- Price
- $146.49
- Rating
- 4.5/5
- Reviews
- 1,442
- Age
- 2y ago

ALGAECAL Collagen Peptides Skin Joint Bone Benefits 30 Servings 1 Pack
- Price
- $58.76
- Rating
- 4.5/5
- Reviews
- 1,442
- Age
- 2y ago

ALGAECAL D3 Complete Vitamins D3 K2 A & E for Bones 60 Softgels 1 Pack
- Price
- $35.72
- Rating
- 4.6/5
- Reviews
- 623
- Age
- 2y ago
Competition: brands, sellers & click share
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
Brands
6 rising
Sellers
22
Top-5 brand share
98%
Top 20: 100%
Top-5 click share
75%
Top 20: 100%
Open market
0%
- ALGAECAL87%
- sapling5%
- New Chapter2%
- ZAB2%
- PlantFusion2%
- NOW Foods2%
Algae Calcium demand & seasonality
Weekly search volume, with the niche's key stats alongside.
No pronounced peak months · busiest ÷ quietest = 1.3×
Top Algae Calcium search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- algaecal plus145K/yr
- algaecal177K/yr
- algaecal plus bone strength52K/yr
- algae cal26K/yr
- algae calcium24K/yr
- algae cal plus14K/yr
- algae calcium supplement15K/yr
- algae cal+11K/yr
- algaecal calcium8K/yr
- aquamin calcium6K/yr
What reviews say buyers love and hate about Algae Calcium
What buyers mention most, as a share of all reviews.
What buyers love
64% of reviews“Excellent product”
“Great calcium”
“The product effectively alleviates joint pain”
“No issues with swallowing although the capsules are on the larger size”
“Great vitamin feel a difference like the k2 d3”
What buyers complain about
49% of reviews“Too expensive”
“I could not tolerate straight calcium”
“I gave this 3 stars because the dosage is NOT correct”
“Stomach Issues”
“It may be tasteless”
Algae Calcium return rate & reasons
Why buyers send it back, as a share of all return requests.
0.0%
Return rate
0%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Algae Calcium questions
The questions sellers ask about this niche, answered from the tracked metrics.
Best Flapen score
The highest-scoring niches we track right now, across every category.









