magnesium powder
Skip itSoft demand (-22.1% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Great7.6%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Competition
Good50%top-5 click share — leaders hold, buyers still browse
Price range
Okay£5.19–£24.19cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay78%top-5 brand share — brands hold most of the demand
Avg price
Okay£10.92avg listing price — sweet spot $15–$100
Review moat
Okay2,480avg incumbent reviews — the moat a new listing must climb
Market size
Bad£73K£73K/yr · 88K searches
Growth
Bad-22.1%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, magnesium powder is a £73K/yr Amazon United Kingdom market (88K searches/yr). The top 5 brands hold 78% of demand. Demand peaks in Jan. Verdict: Skip it — 49/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
magnesium powder market data
- Units sold / yr
- 6K–8K
- avg 100–250/product
- Revenue / yr
- £66K–£87K
- units × avg price
- Conversion rate
- 7.6%
- Avg BSR
- #175
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 3.2%
- Avg brand age
- 43 months
- Avg seller age
- 171 days
Competition & brand share
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.Brands
18 flat
Sellers
100
Top-5 brand share
78%
Top 20: 100%
Top-5 click share
50%
Top 20: 90%
Open market
17%
- BetterYou38%
- Applied Nutrition13%
- BANDINI12%
- Nutrition Geeks9%
- TRIP6%
- Natural Vitality4%
- Open — no brand owns it (12 brands, 17%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -22.1% search growth over the last 90 days.Peak months: Jan · busiest ÷ quietest = 1.8×
Top magnesium powder search terms
- magnesium powder52K/yr
- better you magnesium14K/yr
- magnesium powder for sleep8K/yr
- betteryou magnesium4K/yr
- magnesium glycinate 3-in-1 powder4K/yr
- powder magnesium3K/yr
- magnesium better you2K/yr
Top magnesium powder 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
BetterYou Magnesium Glycinate Citrate & Malate Supplement | Magnesium Max Powder - Lemon & Lime Flavoured 3-in-1 Powder 375mg Elemental Magnesium Fast Absorbing Fast Acting & Easy to Use Drink
BetterYou£8.764.3★100 rev
Bandini Magnesium Powder 430mg - Pure Magnesium 60 Servings Magnesium Carbonate Source of Magnesium Citrate Intestinal Well-Being Supplement for Constipation Anxiety Stress Memory (300g)
BANDINI£10.544.5★1,485 rev
Magnesium Glycinate 3-in-1 Complex - 1800mg Supplements as Bisglycinate Citrate & Malate 90 Vegan Capsules Triple High Absorption 384mg Elemental UK Made
Nutrition Geeks£8.114.5★35,795 rev
Applied Nutrition Tri-Magnesium Powder 3 in 1 - Magnesium Glycinate Supplements for Bone Muscle Nervous System Sleep Health - 300 mg per Serving (200g - 50 Servings) (Tropical Vibes)
Applied Nutrition£13.224.2★89 rev
TRIP Magnesium Glycinate Powder - 7 500MG Magnesium per Pack with L-Theanine & Lions Mane Delicious Pomegranate Orange Blossom Flavour Sugar Free 1 Pack - 30 Drink Mix Servings
TRIP£11.234.2★584 rev
Newest
by launch date
Healthy Metal Magnesium Drink Mix Sachets for Sleep Relaxation & Daily Support Magnesium Glycinate Powder Raspberry Lemon Flavour Easy to Mix Supplement 7 Sachets
Healthy Metal£8.69132 rev
Magnesium Powder Supplement | Calm Relaxing Drink Mix | High Strength Magnesium Carbonate | for Women & Men | Vegan & Unflavoured | 200g | Natural Vitality
Natural Vitality£16.8624 rev
BetterYou Magnesium Glycinate Citrate & Malate Supplement | Magnesium Max Powder - Lemon & Lime Flavoured 3-in-1 Powder 375mg Elemental Magnesium Fast Absorbing Fast Acting & Easy to Use Drink
BetterYou£8.76100 rev
Natural Vitality Calm Magnesium Powder Supplement | Relaxing Drink Mix | 100 Servings | High Strength Magnesium Carbonate | for Women & Men | Vegan | Natural Raspberry-Lemon Flavour | 400g
Natural Vitality£24.1927 rev
Magnesium Glycinate Powder 400MG | Muscle & Relaxation Support | Peach Mango Flavor Drink | High Absorption Chelated Magnesium Powder | Vegan Gluten-Free Non-GMO | 30 Servings | 225g (7.94oz)
Nobi Nutrition£9.18279 rev
Trending
90-day click momentumHealthy Metal Magnesium Drink Mix Sachets for Sleep Relaxation & Daily Support Magnesium Glycinate Powder Raspberry Lemon Flavour Easy to Mix Supplement 7 Sachets
Healthy Metal£8.694.2★
Natural Vitality Calm Magnesium Powder Supplement | Relaxing Drink Mix | 100 Servings | High Strength Magnesium Carbonate | for Women & Men | Vegan | Natural Raspberry-Lemon Flavour | 400g
Natural Vitality£24.194.4★
Vitaminnica Magnesium 3-in-1 Effervescent- 15 Tablets High Absorption Magnesium Malate Citrate & Glycinate Energy Muscle Function & Relaxation Sugar-Free (Pack of 1 Orange)
Vitaminnica Because your Health Matters£5.194.2★
Best Naturals Magnesium Glycinate Powder - 1 Pound (1 LB (Pack of 1))
Best Naturals£14.784.4★
Magnesium Powder Supplement | Calm Relaxing Drink Mix | High Strength Magnesium Carbonate | for Women & Men | Vegan & Unflavoured | 200g | Natural Vitality
Natural Vitality£16.864.4★
What buyers say about magnesium powder
What buyers praise and complain about, mined from review topics.What buyers love
“HELPS WITH SLEEP”
“Good product x”
“Best magnesium supplement around”
“Excellent value for money”
“Fantastic taste”
“As Advertised”
“It has helped with muscle recovery after efforts”
“Does the job”
“Easy to Use”
“i've found no problem in swallowing them”
What buyers complain about
“No sleep”
“didnt work as well as expected”
“This magnesium does not work”
“The dosage is far too high”
“artificial tasting”
“Gives you stomach cramps”
“Too expensive”
“Allergic reaction”
“they are huge”
“only negative effects”
Top return reasons
Common questions
- Is magnesium powder profitable to sell on Amazon United Kingdom?
- The niche generates £73K/yr across 31 tracked products. 5 of 8 products launched in the last 360 days are still selling. 90-day search growth is -22.1%. Flapen's verdict: Skip it (49/100).
- How competitive is the magnesium powder niche?
- 18 brands and 100 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 78% of demand.
- What do buyers complain about in magnesium powder?
- Top complaints mined from reviews: Sleep Quality, Functionality-Overall, Magnesium. The return rate is 0.1%.
- When does demand for magnesium powder peak?
- Demand peaks in Jan; the busiest month runs 1.8× the quietest.
- What does it cost to enter the magnesium powder niche?
- Listings span £5.19–£24.19; the average listing price is £10.92 (sweet spot $15–$100). The average incumbent carries 2,480 reviews — the moat a new listing must climb.