---
title: "magnesium hydroxide — Niche Verdict: Worth a look (50/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/health-household/magnesium-hydroxide"
last_updated: "2026-07-14T02:03:01.296Z"
locale: en
meta:
  description: "magnesium hydroxide shows low returns (0.0%), but soft demand (-5.3% this quarter) keeps it on the watch list."
  "og:description": "magnesium hydroxide shows low returns (0.0%), but soft demand (-5.3% this quarter) keeps it on the watch list."
  "og:title": "magnesium hydroxide — Niche Verdict: Worth a look (50/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **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 6% 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

## **Competition**

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%**

**Open market**

**23%**

- BulkSupplements25% - mGanna15% - Herbs Botanica14% - Best Naturals9% - Dulcolax8% - Phillips'5%

## **Product shelf**

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)](https://m.media-amazon.com/images/I/41CspX9rXtL.jpg)**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](https://m.media-amazon.com/images/I/41Z0MwwcWkL.jpg)**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](https://m.media-amazon.com/images/I/4119OKrJM5L.jpg)**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](https://m.media-amazon.com/images/I/41tLxMgrVuL.jpg)**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](https://m.media-amazon.com/images/I/416Bxm+ED8L.jpg)**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](https://m.media-amazon.com/images/I/51ffcyVG-ZL.jpg)**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](https://m.media-amazon.com/images/I/41C2pLAWfbL.jpg)**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](https://m.media-amazon.com/images/I/4119OKrJM5L.jpg)**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)](https://m.media-amazon.com/images/I/41hh5jddhhL.jpg)**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)](https://m.media-amazon.com/images/I/31YnlHsLZqL.jpg)**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](https://m.media-amazon.com/images/I/51ffcyVG-ZL.jpg)**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](https://m.media-amazon.com/images/I/4119OKrJM5L.jpg)**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](https://m.media-amazon.com/images/I/41Z0MwwcWkL.jpg)**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)](https://m.media-amazon.com/images/I/41XL89rOJkL.jpg)**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](https://m.media-amazon.com/images/I/41C2pLAWfbL.jpg)**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 →~~**

## **Demand**

Weekly Amazon search volume, last 48 weeks — -5.3% search growth over the last 90 days.

5K4KSpike '25Aug '25Oct '25Nov '25Jan '26Mar '26May '26

## **Reviews**

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%