Is best magnesium for constipation profitable to sell on Amazon United States?

The niche generates $274K/yr across 24 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is -5.3%. Flapen's verdict: Worth a look (56/100).

How competitive is the best magnesium for constipation niche?

19 brands and 83 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 67% of demand.

What do buyers complain about in best magnesium for constipation?

Top complaints mined from reviews: Functionality-Overall, Taste-Overall, Regulates Digestion. The return rate is 0.0%.

When does demand for best magnesium for constipation peak?

Demand peaks in Mar–Apr–May–Jun–Jul; the busiest month runs 2.7× the quietest.

What does it cost to enter the best magnesium for constipation niche?

Listings span $6.30–$45.39; the average listing price is $19.70 (sweet spot $15–$100). The average incumbent carries 16,059 reviews — the moat a new listing must climb.

best magnesium for constipation

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$19.70

avg listing price — sweet spot $15–$100

Price range

Great$6.30–$45.39

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

Conversion

Good6.7%

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

Brand share

Good67%

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

Competition

Good50%

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

Market size

Okay$274K

$274K/yr · 209K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Bad-5.3%

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

Review moat

Bad16,059.25

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, best magnesium for constipation is a $274K/yr Amazon United States market (209K searches/yr). The top 5 brands hold 67% of demand. Demand peaks in Mar–Apr–May–Jun–Jul. Verdict: Worth a look — 56/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

best magnesium for constipation market data

Units sold / yr: 13K–15K; avg 500–750/product
Revenue / yr: $246K–$296K; units × avg price
Conversion rate: 6.7%
Avg BSR: #203
Page quality: 0%
Prime: 100%
Sponsored: 88%
Out of stock: 0.0%
Avg brand age: 74 months
Avg seller age: 148 days

Competition & brand share

The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.

Brands

19 flat

Sellers

Top-5 brand share

67%

Top 20: 100%

Top-5 click share

50%

Top 20: 95%

Open market

29%

Nobi Nutrition28%
nbpure15%
Double Wood Supplements12%
NOW Foods7%
A+Health4%
Nature Made4%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.3% search growth over the last 90 days.

Peak months: Mar, Apr, May, Jun, Jul · busiest ÷ quietest = 2.7×

Open Trend

Top best magnesium for constipation search terms

magnesium for constipation63K/yr +2.1%6.5% conv.
magnesium citrate for constipation45K/yr -1.1%6.3% conv.
best magnesium for constipation20K/yr -5.3%2.4% conv.
magnesium constipation relief8K/yr +41.3%3.1% conv.
mag citrate for constipation11K/yr -17.9%8.6% conv.
magnesium citrate constipation relief7K/yr +43.8%3.1% conv.
best magnesium for pooping15K/yr -43.5%2.3% conv.
magnesium for constipation for women9K/yr -26.1%7.0% conv.
magnesium citrate constipation7K/yr +0.6%5.5% conv.
magnesium citrate digestion4K/yr +56.3%0.7% conv.

All search terms

Top best magnesium for constipation 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

Magnesium Citrate Complex 500 MG for Constipation Digestion Calm & Relaxation Support | High Absorption Magnesium Supplement | Citrato de Magnesio | Non-GMO Soy-Free | 60 Mag Citrate Capsules

Nobi Nutrition$19.544.6★23,657 rev

Magnesium Citrate 800mg 180 Capsules Digestion & Constipation Support Vegan Safe Non-GMO Double Wood Supplements

Double Wood Supplements$14.724.6★6,076 rev

NOW Supplements Magnesium Citrate Enzyme Function* Nervous System Support* 120 Veg Capsules

NOW Foods$9.974.7★25,502 rev

nbpure MagO7 Natural Colon Cleanse & Detox (180 Capsules)

nbpure$39.164.6★47,406 rev

nbpure MagO7 - Natural Colon Cleanse & Detox | Occasional Constipation Relief Stool Softening & Bloating Support for Men & Women | Ozonated Magnesium Oxide 90 Capsules

nbpure$27.674.6★47,406 rev

Newest

by launch date

THORNE - Magnesium Citrate - Supports Healthy Muscle & Urinary Tract Function Heart Health Bone Health & Occasional Constipation Relief* - Citrus Berry Powder - Third-Party Certified - 60 Servings

THORNE$38.1342 rev

4mo ago

Dulcolax Daily Gut Support Gummies Magnesium Formula Stimulant-Free Berry Flavor 60 Count

Dulcolax$16.41378 rev

7mo ago

Let Loose Daily Constipation Relief Pills Debloating for Women (30 Count)

Let Loose$45.39392 rev

9mo ago

Arofum Magnesium Citrate Capsules for Constipation & Sleep Support - Vegan Magnesium Citrate Supplement with Vitamin B6 & L-Theanine for High Absorption - 120 Capsules Non-GMO

Arofum$12.7278 rev

11mo ago

A+Health Magnesium Citrate Oral Solution Saline Laxative Lemon 10 Fl Oz

A+Health$6.30460 rev

1y ago

What buyers say about best magnesium for constipation

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

What buyers love

Quality-Overall13%

“EXCELLENT PRODUCT”

Efficiency13%

“Gets the job done”

Regulates Digestion9%

“easy to digest”

Advertised Vs Actual Product7%

“As advertised”

Magnesium5%

“Best magnesium supplement I have found”

Taste-Overall5%

“the taste is manageable”

Ease Of Use4%

“easy to handle”

Value For Money4%

“Good value for the money”

Acid Regulator/Stomach Ache Relief4%

“No stomach ache”

Sleep Quality3%

“Better sleep”

What buyers complain about

Functionality-Overall16%

“Did not work as described”

Taste-Overall8%

“Bad aftertaste”

Regulates Digestion6%

“Causes tummy problems”

Dosage6%

“Dose is too high for me”

Magnesium5%

“Magnesium glycinate didn't help at all”

Size-Overall4%

“Very large pills”

Value For Money4%

“A little pricey”

Acid Regulator/Stomach Ache Relief4%

“Hard on my stomach”

Side Effects3%

“Painful side effects”

Ease Of Chewing/Swallowing2%

“hard to chew”

Top return reasons

Magnesium41%

Dosage16%

Functionality-Overall14%

Ease Of Chewing/Swallowing6%

Size-Overall4%

Advertised Vs Actual Product4%

Side Effects4%