milk of magnesia
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Great8.5%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Review moat
Good521.5avg incumbent reviews — the moat a new listing must climb
Avg price
Okay£11.53avg listing price — sweet spot $15–$100
Growth
Okay+0.2%90-day search growth — must beat 0% to launch
Price range
Bad£5.21–£18.12cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Bad£90K£90K/yr · 91K searches
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, milk of magnesia is a £90K/yr Amazon United Kingdom market (91K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Mar–Nov–Dec. Verdict: Skip it — 40/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
milk of magnesia market data
- Units sold / yr
- 13K–15K
- avg 3,000–4,000/product
- Revenue / yr
- £144K–£173K
- units × avg price
- Conversion rate
- 8.5%
- Avg BSR
- #372
- Page quality
- 0%
- Prime
- 75%
- Sponsored
- 25%
- Out of stock
- 0.0%
- Avg brand age
- 40 months
- Avg seller age
- 160 days
Competition & brand share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 rising
Sellers
12
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- MILK OF MAGNESIA49%
- Bayer40%
- Generic6%
- LuxPaks6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +0.2% search growth over the last 90 days.Peak months: Jan, Feb, Mar, Nov, Dec · busiest ÷ quietest = 7.7×
Top milk of magnesia search terms
- milk of magnesia53K/yr
- milk of magnesia liquid original25K/yr
- milk of magnesium5K/yr
- milk of magnesia liquid5K/yr
- milk magnesium liquid3K/yr
Top milk of magnesia 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.
All 4 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
MILK OF MAGNESIA Phillips Multicoloured Mint 200 ml
MILK OF MAGNESIA£5.214.7★2,008 rev
Phillips Milk of Magnesia Original Liquid 12 fl oz 355ml Bayer Consumer
Bayer£10.944.4★60 rev
Milk of Magnesia Liquid Philips Traditional Mint Flavour for Indigestion 200ml
Generic£11.874.5★15 rev
LUXPAKS Tongue Scraper Bundled with Phllips Milk of Magnesia Sugar-Free
LuxPaks£18.123.5★3 rev
Newest
by launch dateLUXPAKS Tongue Scraper Bundled with Phllips Milk of Magnesia Sugar-Free
LuxPaks£18.123 rev
Phillips Milk of Magnesia Original Liquid 12 fl oz 355ml Bayer Consumer
Bayer£10.9460 rev
MILK OF MAGNESIA Phillips Multicoloured Mint 200 ml
MILK OF MAGNESIA£5.212,008 rev
Milk of Magnesia Liquid Philips Traditional Mint Flavour for Indigestion 200ml
Generic£11.8715 rev
Trending
90-day click momentumPhillips Milk of Magnesia Original Liquid 12 fl oz 355ml Bayer Consumer
Bayer£10.944.4★
LUXPAKS Tongue Scraper Bundled with Phllips Milk of Magnesia Sugar-Free
LuxPaks£18.123.5★
MILK OF MAGNESIA Phillips Multicoloured Mint 200 ml
MILK OF MAGNESIA£5.214.7★
Milk of Magnesia Liquid Philips Traditional Mint Flavour for Indigestion 200ml
Generic£11.874.5★
What buyers say about milk of magnesia
What buyers praise and complain about, mined from review topics.What buyers love
“helps my tummy”
“Great product”
“Large bottle really good price”
“effectively relieve digestive discomfort”
“Arrived as stated as described”
“have been using it for years”
“The design is ALSO a bigger bottle - great value”
“Magnesium hydroxide reacts with your stomach acid to provide water”
“Not an unpleasant taste either”
What buyers complain about
“Missled and v v expensive”
“it tastes absolutely awful”
“Didn't work”
“Smallish bottle”
“with much weaker content”
“clumpy texture in your mouth”
Common questions
- Is milk of magnesia profitable to sell on Amazon United Kingdom?
- The niche generates £90K/yr across 4 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +0.2%. Flapen's verdict: Skip it (40/100).
- How competitive is the milk of magnesia niche?
- 4 brands and 12 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in milk of magnesia?
- Top complaints mined from reviews: Value For Money, Taste-Overall, Functionality-Overall. The return rate is 0.0%.
- When does demand for milk of magnesia peak?
- Demand peaks in Jan–Feb–Mar–Nov–Dec; the busiest month runs 7.7× the quietest.
- What does it cost to enter the milk of magnesia niche?
- Listings span £5.21–£18.12; the average listing price is £11.53 (sweet spot $15–$100). The average incumbent carries 522 reviews — the moat a new listing must climb.