Magnesium Oxide 200mg
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
Incredible19.1%search→purchase rate — share of searches ending in a sale
Market size
Okay$266K$266K/yr · 188K searches
Growth
Okay+11.7%90-day search growth — must beat 0% to launch
Avg price
Bad$7.40avg listing price — sweet spot $15–$100
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Review moat
Bad24,541.5avg incumbent reviews — the moat a new listing must climb
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Price range
Bad$4.10–$12.11cheapest to priciest tracked listing — scored on the share inside $15–$100
Is magnesium oxide 200mg profitable on Amazon?
According to Flapen's Amazon United States niche tracking, magnesium oxide 200mg is a $266K/yr Amazon United States market (188K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 37/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
magnesium oxide 200mg market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 40K–50K
- avg 10,000–12,500/product
- Revenue / yr
- $296K–$370K
- units × avg price
- Conversion rate
- 19.1%
- Avg BSR
- #980
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 50%
- Out of stock
- 0.0%
- Avg brand age
- 79 months
- Avg seller age
- 151 days
Competition: brands, sellers & click share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
2 falling
Sellers
70
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- Nature Made96%
- Swanson4%
magnesium oxide 200mg demand & seasonality
Weekly Amazon search volume, last 65 weeks — +11.7% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top magnesium oxide 200mg search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- magnesium 250 mg59K/yr
- magnesium oxide 250 mg40K/yr
- magnesium 25018K/yr
- magnesium oxide 200mg20K/yr
- magnesium 250mg13K/yr
- nature made magnesium 250 mg11K/yr
- magnesium 250 mg tablets11K/yr
- magnesium 250 mg softgels5K/yr
- magnesium oxide 200 mg4K/yr
- 250 mg magnesium4K/yr
Top magnesium oxide 200mg 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.
All 4 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nature Made Magnesium Oxide 250 mg for Muscle Relaxation 200 Tablets
Nature Made$6.804.7★34,776 rev
Nature Made Magnesium 250mg 100 Tablets
Nature Made$4.104.7★27,696 rev
Nature Made Magnesium 250 mg Softgels 90 Softgels
Nature Made$6.574.7★34,776 rev
Swanson Magnesium 200 Milligrams 250 Capsules
Swanson$12.114.6★918 rev
Newest
by launch dateNature Made Magnesium 250 mg Softgels 90 Softgels
Nature Made$6.5734,776 rev
Swanson Magnesium 200 Milligrams 250 Capsules
Swanson$12.11918 rev
Nature Made Magnesium Oxide 250 mg for Muscle Relaxation 200 Tablets
Nature Made$6.8034,776 rev
Nature Made Magnesium 250mg 100 Tablets
Nature Made$4.1027,696 rev
Trending
90-day click momentumWhat reviews say buyers love and hate about magnesium oxide 200mg
What buyers praise and complain about, mined from review topics.What buyers love
“best magnesium”
“good quality pills”
“Good deal”
“Vitamin is a good thing”
“helps me with sleep”
“Delivers exactly as described”
“Works well”
“No problems using this”
“Easy to swallow”
“This brand is good for muscle pain”
What buyers complain about
“Magnesium Oxide not Glycinate”
“500 mg too high”
“This gave me intense nightmares for about a week I stopped taking it”
“I'm assuming from the stomach upset”
“Contains artificial preservatives”
“Hard to swallow”
“Doesnt work”
“This form can cause - uh - gastrointestinal”
“Waste of money”
“I wasnt expecting something this misleading from Nature”
Top return reasons
Common magnesium oxide 200mg questions
- Is magnesium oxide 200mg profitable to sell on Amazon United States?
- The niche generates $266K/yr across 4 tracked products. 90-day search growth is +11.7%. Flapen's verdict: Skip it (37/100).
- How competitive is the magnesium oxide 200mg niche?
- 2 brands and 70 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in magnesium oxide 200mg?
- Top complaints mined from reviews: Magnesium, Dosage, Side Effects. The return rate is 0.0%.
- When does demand for magnesium oxide 200mg peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the magnesium oxide 200mg niche?
- Listings span $4.10–$12.11; the average listing price is $7.40 (sweet spot $15–$100). The average incumbent carries 24,542 reviews — the moat a new listing must climb.