---
title: "Magnesium Hydroxide — $9K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/magnesium-hydroxide"
last_updated: "2026-08-12T16:24:03.515Z"
locale: en
meta:
description: "Amazon product research for magnesium hydroxide: $9K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for magnesium hydroxide: $9K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Magnesium Hydroxide — $9K/mo Amazon US Product Research"
---
# **Magnesium Hydroxide**
**Worth a look**
Shows low returns (0.0%), but soft demand (-5.3% this quarter) keeps it on the watch list.
Market size 26Growth 22Conversion 67Competition 35Returns 100Price range 72Avg price 87Brand share 56Review moat 25Quality gap 62
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$19.79**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$5.77–$38.62**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****6.0%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****64%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$104K**
$104K/yr · 87K searches
**Review moat**
**Bad****4,270.06**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-5.3%**
90-day search growth — must beat 0% to launch
## **Is magnesium hydroxide profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, magnesium hydroxide is a $104K/yr Amazon United States market (87K searches/yr). The top 5 brands hold 71% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **magnesium hydroxide market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **4K–5K**
- avg 100–250/product
- **Revenue / yr**
- **$79K–$99K**
- units × avg price
- **Conversion rate**
- **6.0%**
- **Avg BSR**
- **#783**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **89%**
- **Out of stock**
- **0.4%**
- **Avg brand age**
- **79 months**
- **Avg seller age**
- **147 days**
## **Competition: brands, sellers & click share**
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**14 **▼falling
**Sellers**
**64**
**Top-5 brand share**
**71%**
Top 20: 100%
**Top-5 click share**
**64%**
Top 20: 100%
**Open market**
**23%**
- BulkSupplements25% - mGanna15% - Herbs Botanica14% - Best Naturals9% - Dulcolax8% - Phillips'5%
## **magnesium hydroxide demand & seasonality**
Weekly Amazon search volume, last 48 weeks — -5.3% search growth over the last 90 days.
5K4KSpike '25Aug '25Oct '25Nov '25Jan '26Mar '26May '26
[**Open Trend **](https://flapen.com/research/us/health-household/magnesium-hydroxide/trend)
## **Top magnesium hydroxide search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **magnesium hydroxide**75K/yr-1.0%5.7% conv. - **hidrxido de magnesio**9K/yr-45.0%2.3% conv. - **magnesium hydroxide laxative**4K/yr+42.5%5.3% conv. [**All search terms **](https://flapen.com/research/us/health-household/magnesium-hydroxide/search-terms)
## **Top magnesium hydroxide products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$10K20%$21K30%$31K40%$42K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**BulkSupplements.com Magnesium Hydroxide Powder - Magnesium Hydroxide Supplement - Food Grade & Gluten Free 1g per Serving 500g (1.1 lbs) (Pack of 1)**BulkSupplements**$18.96**4.7★1,506 rev](https://www.amazon.com/dp/B00GUOWEL8) [2**mGanna Magnesium Hydroxide Powder 227 GMS / 0.5 lbs**mGanna**$11.44**4.6★82 rev](https://www.amazon.com/dp/B0CYTB6S5B) [3**Herbs Botanica Magnesium Hydroxide Powder 8 oz Fine Powdered Magnesium for DIY Use Deodorant Toothpaste and Crafting Ozonated Magnesium Oxide Alternative**Herbs Botanica**$11.69**4.5★94 rev](https://www.amazon.com/dp/B0FG3492CR) [4**Best Naturals Magnesium Hydroxide Powder - 380mg of Elemental Magnesium per Serving - 454 Servings per Cotainer - 1 Pound**Best Naturals**$14.63**4.6★284 rev](https://www.amazon.com/dp/B0C3WMWGY6) [5**Phillips Milk of Magnesia Liquid Laxative Wild Cherry Flavor Stimulant Free Cramp Free Relief of Occasional Constipation* Effective in 30 minutes - 6 hours #1 Milk of Magnesia Brand 26 oz**Phillips'**$8.78**4.7★12,448 rev](https://www.amazon.com/dp/B005TM4DMK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Colace Saline Laxative 60 Capsules Fast Acting Gentle Constipation Relief for Adults Gentle Magnesium Hydroxide Formula Non-Stimulant Laxative Severe Constipation Relief**Colace**$21.45**59 rev3mo ago](https://www.amazon.com/dp/B0G5BLT7S6) [**Magnesium Hydroxide Capsules Gentle Osmotic Digestive Regularity Support Helps Maintain Comfortable Bowel Routine Daily GI Balance for Adults - 120 Capsules**Florvyn**$25.61**1 rev8mo ago](https://www.amazon.com/dp/B0FZBQGFYT) [**Herbs Botanica Magnesium Hydroxide Powder 8 oz Fine Powdered Magnesium for DIY Use Deodorant Toothpaste and Crafting Ozonated Magnesium Oxide Alternative**Herbs Botanica**$11.69**94 rev1y ago](https://www.amazon.com/dp/B0FG3492CR) [**Magnesium Hydroxide Capsules Contains 270 mg of Magnesium Relieve Constipation and Indigestion Support Intestinal Motility Gut Health for Women and Men (120 Capsules)**provspro**$30.53**18 rev1y ago](https://www.amazon.com/dp/B0FCRXXTFG) [**Quicksilver Scientific Magnesium Hydroxide (120 Capsules)**Quicksilver Scientific**$38.62**11 rev1y ago](https://www.amazon.com/dp/B0DZQ7W2RH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Colace Saline Laxative 60 Capsules Fast Acting Gentle Constipation Relief for Adults Gentle Magnesium Hydroxide Formula Non-Stimulant Laxative Severe Constipation Relief**Colace**$21.45**4.4★**▲ 250%**](https://www.amazon.com/dp/B0G5BLT7S6) [**Herbs Botanica Magnesium Hydroxide Powder 8 oz Fine Powdered Magnesium for DIY Use Deodorant Toothpaste and Crafting Ozonated Magnesium Oxide Alternative**Herbs Botanica**$11.69**4.5★**▲ 52%**](https://www.amazon.com/dp/B0FG3492CR) [**mGanna Magnesium Hydroxide Powder 227 GMS / 0.5 lbs**mGanna**$11.44**4.6★**▲ 35%**](https://www.amazon.com/dp/B0CYTB6S5B) [**BulkSupplements.com Magnesium Hydroxide Powder - Magnesium Hydroxide Supplement - Food Grade & Gluten Free 1g per Serving 100g (3.5 oz) (Pack of 1)**BulkSupplements**$13.36**4.7★**▲ 30%**](https://www.amazon.com/dp/B01N8U7HZW) [**Magnesium Hydroxide Capsules Gentle Osmotic Digestive Regularity Support Helps Maintain Comfortable Bowel Routine Daily GI Balance for Adults - 120 Capsules**Florvyn**$25.61**2.0★**▲ 25%**](https://www.amazon.com/dp/B0FZBQGFYT)
**~~View all trending →~~**
## **What reviews say buyers love and hate about magnesium hydroxide**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Taste-Overall**14%
*“Great taste”*
**Efficiency**11%
*“Works perfectly”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Ease Of Use**7%
*“Easy to use”*
**Quality-Overall**6%
*“Very effective product”*
**Regulates Digestion**6%
*“Great, smooth digestion”*
**Ease Of Chewing/Swallowing**5%
*“Great chews”*
**Acid Regulator/Stomach Ache Relief**4%
*“it works quickly to help the stomach with any malaise”*
**Value For Money**3%
*“Great deal”*
**Flavor**3%
*“Nice flavors and easy to chew”*
### **What buyers complain about **
**Functionality-Overall**19%
*“Never worked”*
**Taste-Overall**18%
*“Not tasty”*
**Value For Money**4%
*“A little pricey”*
**Dosage**3%
*“It seems expensive for the dosage”*
**Regulates Digestion**3%
*“For several years constipation has been getting progressively worse, to the point where it can be 5 days and nothing, which then required 3-4 stimulant laxative pills and a lot of effort to get things moving”*
**Texture/Consistency-Overall**2%
*“Weird texture”*
**Ease Of Chewing/Swallowing**2%
*“I did not have great ease in swallowing it”*
**Smell**2%
*“Smell is weird”*
**Advertised Vs Actual Product**2%
*“Not quite as described”*
**Acid Regulator/Stomach Ache Relief**2%
*“I got a stomach ache”*
### **Top return reasons **
**Charging**50%
**Dosage**50%
## **Common magnesium hydroxide questions**
- **Is magnesium hydroxide profitable to sell on Amazon United States?**
- The niche generates $104K/yr across 18 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -5.3%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the magnesium hydroxide niche?**
- 14 brands and 64 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in magnesium hydroxide?**
- Top complaints mined from reviews: Functionality-Overall, Taste-Overall, Value For Money. The return rate is 0.0%.
- **What does it cost to enter the magnesium hydroxide niche?**
- Listings span $5.77–$38.62; the average listing price is $19.79 (sweet spot $15–$100). The average incumbent carries 4,270 reviews — the moat a new listing must climb.
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