guardium
Skip itA concentrated shelf (top 5 take 89% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible31.2%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Market size
Good£740K£740K/yr · 267K searches
Review moat
Okay3,174.56avg incumbent reviews — the moat a new listing must climb
Avg price
Okay£8.88avg listing price — sweet spot $15–$100
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Price range
Bad£4.83–£16.75cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Bad95%top-5 brand share — brand-locked demand
Growth
Bad-29.9%90-day search growth — must beat 0% to launch
Competition
Bad89%top-5 click share — a locked-up shelf
According to Flapen's Amazon United Kingdom niche tracking, guardium is a £740K/yr Amazon United Kingdom market (267K searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Jan–Feb–Mar. Verdict: Skip it — 40/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
guardium market data
- Units sold / yr
- 80K–100K
- avg 8,000–10,000/product
- Revenue / yr
- £710K–£888K
- units × avg price
- Conversion rate
- 31.2%
- Avg BSR
- #31
- Page quality
- 0%
- Prime
- 89%
- Sponsored
- 89%
- Out of stock
- 0.0%
- Avg brand age
- 65 months
- Avg seller age
- 162 days
Competition & brand share
The top 5 products capture 89% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 rising
Sellers
92
Top-5 brand share
95%
Top 20: 100%
Top-5 click share
89%
Top 20: 100%
Open market
2%
- Nexium78%
- Gaviscon7%
- Generic4%
- ANCIENT CARE CREATING HEALTHIER LIVES4%
- BIOVITA3%
- Gegoup2%
- Open — no brand owns it (1 brand, 2%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -29.9% search growth over the last 90 days.Peak months: Jan, Feb, Mar · busiest ÷ quietest = 2.6×
Top guardium search terms
- nexium131K/yr
- nexium control 40mg tablets 28 tablets40K/yr
- nexium control 20mg tablets 28 tablets24K/yr
- guardium18K/yr
- reflux8K/yr
- gastro resistant tablets7K/yr
- nexium control8K/yr
- guardium acid reflux tablets pack of 285K/yr
- nexum4K/yr
- cimetidine3K/yr
Top guardium 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 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nexium Control Heartburn & Indigestion Tablets for Acid Reflux Relief Gastro-Resistant Esomeprazole Tablets 20mg 14 Count
Nexium£7.674.7★11,688 rev
Nexium Control Heartburn & Indigestion Capsules for Acid Reflux Relief Gastro-Resistant Esomeprazole capsules 20mg 14 Count
Nexium£8.544.6★5,513 rev
Nexium Control Heartburn & Indigestion Tablets for Acid Reflux Relief Gastro-Resistant Esomeprazole Tablets 20mg 7 Count
Nexium£4.834.7★3,228 rev
Guardium Esomeprazole Acid Reflux Tablets 14 Pack - Indigestion & Heartburn Relief 24-Hour GERD/GORD Protection Antacids for Digestion & Nausea
Gaviscon£7.604.6★6,389 rev
Nexiumm Control Heartburn and Acid Reflux Relief Tablets 28 Count (14 x 2)
Generic£16.755.0★23 rev
Newest
by launch date
NEXIUMM Control Heartburn and Acid Reflux Tablets | 14 Capsules
Gegoup£11.2951 rev
Esomeprazole 20mg Heartburn & Acid Reflux Control 14 Capsules - 24 Hour Relief with Pill Box
BIOVITA£7.44904 rev
Esomeprazole 20mg Heartburn & Acid Reflux Control 24-Hour Acid Reducer for Indigestion & Heartburn Fast-Acting Delayed-Release Capsules Reduces Stomach Acid 14 Count
ANCIENT CARE CREATING HEALTHIER LIVES£7.46302 rev
Nexiumm Control Heartburn and Acid Reflux Relief Tablets 28 Count (14 x 2)
Generic£16.7523 rev
OSM Pilot Seven Sea Nex
OSM£8.36473 rev
Trending
90-day click momentumNexiumm Control Heartburn and Acid Reflux Relief Tablets 28 Count (14 x 2)
Generic£16.755.0★
Esomeprazole 20mg Heartburn & Acid Reflux Control 24-Hour Acid Reducer for Indigestion & Heartburn Fast-Acting Delayed-Release Capsules Reduces Stomach Acid 14 Count
ANCIENT CARE CREATING HEALTHIER LIVES£7.464.7★
Nexium Control Heartburn & Indigestion Capsules for Acid Reflux Relief Gastro-Resistant Esomeprazole capsules 20mg 14 Count
Nexium£8.544.6★
Nexium Control Heartburn & Indigestion Tablets for Acid Reflux Relief Gastro-Resistant Esomeprazole Tablets 20mg 7 Count
Nexium£4.834.7★
NEXIUMM Control Heartburn and Acid Reflux Tablets | 14 Capsules
Gegoup£11.294.7★
What buyers say about guardium
What buyers praise and complain about, mined from review topics.What buyers love
“Amazing value”
“Excellent product”
“Excellent for heart burn works quickly”
“Worked on my acid reflux very pleased”
“Just as effective as Nexium”
“Goods as advertised”
“work really well for reflux symptoms”
“Really effective”
“They are quite strong and need to be careful and not overdose, limited side effects,”
“easy to swallow”
What buyers complain about
“Expensive though”
“I imagine there might be long term effects over prolonged use”
“Not obvious from description”
“item was left out in the rain every thing was soaked unable to use”
“I was struggling as my acid reflux was making me feel too sick to eat”
“still had heartburn when drinking a few beers”
“So every month I get another piece of useless plastic that goes straight into the recycling bin”
“Seems such a waste of time, money and materials”
“It can take a few days of use for it to start working”
“The tablets are small”
Common questions
- Is guardium profitable to sell on Amazon United Kingdom?
- The niche generates £740K/yr across 9 tracked products. 90-day search growth is -29.9%. Flapen's verdict: Skip it (40/100).
- How competitive is the guardium niche?
- 7 brands and 92 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 95% of demand.
- What do buyers complain about in guardium?
- Top complaints mined from reviews: Value For Money, Side Effects, Advertised Vs Actual Product. The return rate is 0.0%.
- When does demand for guardium peak?
- Demand peaks in Jan–Feb–Mar; the busiest month runs 2.6× the quietest.
- What does it cost to enter the guardium niche?
- Listings span £4.83–£16.75; the average listing price is £8.88 (sweet spot $15–$100). The average incumbent carries 3,175 reviews — the moat a new listing must climb.