Is phosphorus supplements profitable to sell on Amazon United States?

The niche generates $271K/yr across 24 tracked products. 90-day search growth is -6.3%. Flapen's verdict: Worth a look (56/100).

How competitive is the phosphorus supplements niche?

16 brands and 38 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 74% of demand.

What do buyers complain about in phosphorus supplements?

Top complaints mined from reviews: Functionality-Overall, Dosage, Stress/Anxiety. The return rate is 0.1%.

When does demand for phosphorus supplements peak?

Demand is steady year-round — the busiest month runs 1.2× the quietest.

What does it cost to enter the phosphorus supplements niche?

Listings span $7.04–$74.82; the average listing price is $26.11 (sweet spot $15–$100). The average incumbent carries 700 reviews — the moat a new listing must climb.

phosphorus supplements

Worth a look

Shows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Avg price

Incredible$26.11

avg listing price — sweet spot $15–$100

Price range

Great$7.04–$74.82

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

Conversion

Great7.4%

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

Review moat

Good699.96

avg incumbent reviews — the moat a new listing must climb

Brand share

Good74%

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

Market size

Okay$271K

$271K/yr · 141K searches

Competition

Okay60%

top-5 click share — leaders hold, buyers still browse

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Bad-6.3%

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

According to Flapen's Amazon United States niche tracking, phosphorus supplements is a $271K/yr Amazon United States market (141K searches/yr). The top 5 brands hold 74% of demand. Verdict: Worth a look — 56/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

phosphorus supplements market data

Units sold / yr: 10K–13K; avg 500–750/product
Revenue / yr: $261K–$326K; units × avg price
Conversion rate: 7.4%
Avg BSR: #1,166
Page quality: 0%
Prime: 100%
Sponsored: 83%
Out of stock: 3.9%
Avg brand age: 97 months
Avg seller age: 159 days

Competition & brand share

The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 flat

Sellers

Top-5 brand share

74%

Top 20: 100%

Top-5 click share

60%

Top 20: 96%

Open market

21%

Boiron24%
Standard Process17%
Brookfield Pharmaceuticals13%
WellnessOne12%
BIOTICS RESEARCH7%
Urenus5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -6.3% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.2×

Open Trend

Top phosphorus supplements search terms

phosphorus supplements49K/yr -19.0%4.5% conv.
phosphorus35K/yr +17.7%3.9% conv.
phosphorus 30c15K/yr -31.8%24.6% conv.
phosphorus supplement10K/yr +7.0%3.7% conv.
phosphate supplement6K/yr -1.3%2.7% conv.
phosfood liquid by standard process5K/yr +0.1%24.6% conv.
phosphorous3K/yr +76.1%2.0% conv.
phosphorus supplements for humans4K/yr +6.8%4.7% conv.
phosfood liquid3K/yr -17.8%14.8% conv.
liquid phosphorus5K/yr +25.3%3.0% conv.

All search terms

Top phosphorus supplements 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

Standard Process Phosfood Liquid - Phosphorus Supplement for Nutritional Balance - Gluten-Free Vegan & Non-Soy - 60 mL (2 fl oz)

Standard Process$28.924.6★968 rev

Boiron Phosphorus 30C Homeopathic Medicine for Dizziness - 80 Pellets

Boiron$7.044.6★1,414 rev

WellnessOne Ionic Phosphorus Supplements - Phosphorus Liquid from Ortho Phosphoric Acid for Teeth Bone Health & Energy Support - Non-GMO Vegan Gluten Free - 1.67 fl oz

WellnessOne$19.944.2★778 rev

Phosphorus Supplements 100 Packets Dietary Supplements Powder with Sodium Phosphate and Potassium Phosphate Fruit Flavored Phosphorous Supplement Powder for Electrolyte Bone Health & Kidney Health

Brookfield Pharmaceuticals$38.284.5★107 rev

BIOTICS RESEARCH Super Phosphozyme Phosphorous and RNA Electrolytes Healthy Bones and Teeth Protein Production Energy Support 90 Tablets

BIOTICS RESEARCH$21.174.4★182 rev

Newest

by launch date

Phosphorus 200C Homeopathic Remedy 270 Pellets

Urenus$13.0332 rev

1y ago

Phosphorus 30C Homeopathic Remedy 270 Pellets

Urenus$12.9932 rev

1y ago

OsteoVit 5-in-1 Calcium 120 tabs Multivitamin: Calcium Magnesium Phosphorus Vitamin D3 & A - Bone Strength & Flexibility* Non-GMO Gluten Free | Calcium Supplement for Women & Men with Vitamin D

Neogen Health$22.96215 rev

2y ago

Phosphorus Supplements 100 Packets Dietary Supplements Powder with Sodium Phosphate and Potassium Phosphate Fruit Flavored Phosphorous Supplement Powder for Electrolyte Bone Health & Kidney Health

Brookfield Pharmaceuticals$38.28107 rev

3y ago

Phosphorus Supplements 12 Packets Dietary Supplements Powder with Sodium Phosphate and Potassium Phosphate Fruit Flavored Phosphorous Supplement Powder for Electrolyte Bone Health & Kidney Health

Brookfield Pharmaceuticals$10.8944 rev

3y ago

What buyers say about phosphorus supplements

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

What buyers love

Quality-Overall10%

“Overall, if youre looking for a decent quality supplement, I think this brand is the way to go”

Sleep Quality9%

“I CAN FINALLY SLEEP”

Vitamin7%

“I am very pleased with my new supplement”

Focus Enhancement6%

“Fine suplement, good for the brain, memory and focus, also used for healthy aging, reducing stress and lowering cortisol”

Value For Money5%

“Price is great too”

Calcium5%

“Considered a highly absorbable quality calcium”

Ease Of Use4%

“Easy to use”

Efficiency4%

“Works well”

Joint Pain4%

“I am not feeling stronger seems like my joints have not been hurting”

Advertised Vs Actual Product4%

“As advertised”

What buyers complain about

Functionality-Overall11%

“Ineffective”

Dosage8%

“Dosage is too low”

Stress/Anxiety7%

“This gave me one of the worst panic attacks in my life”

Solubility5%

“because by the time it dissolved”

Value For Money4%

“It is quite pricey than what i think”

Taste-Overall3%

“Almost no taste”

Sleep Quality3%

“This supplement did NOTHING to help me sleep”

Calcium3%

“Turns out 15% of gallstones are calcium, phosphate, and bilirubinate”

Dispensing Mechanism3%

“Bad pill dispenser”

Bitter3%

“Just too salty bitter for my liking”

Top return reasons

Functionality-Overall40%

Joint Pain25%

Advertised Vs Actual Product15%

Quality-Overall15%

Temperature Retention5%

Common questions

Is phosphorus supplements profitable to sell on Amazon United States?: The niche generates $271K/yr across 24 tracked products. 90-day search growth is -6.3%. Flapen's verdict: Worth a look (56/100).
How competitive is the phosphorus supplements niche?: 16 brands and 38 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 74% of demand.
What do buyers complain about in phosphorus supplements?: Top complaints mined from reviews: Functionality-Overall, Dosage, Stress/Anxiety. The return rate is 0.1%.
When does demand for phosphorus supplements peak?: Demand is steady year-round — the busiest month runs 1.2× the quietest.
What does it cost to enter the phosphorus supplements niche?: Listings span $7.04–$74.82; the average listing price is $26.11 (sweet spot $15–$100). The average incumbent carries 700 reviews — the moat a new listing must climb.