spring valley magnesium
Skip itSoft demand (-28.4% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Great11.8%search→purchase rate — share of searches ending in a sale
Avg price
Great$17.83avg listing price — sweet spot $15–$100
Price range
Good$4.10–$28.46cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay84%top-5 brand share — brands hold most of the demand
Market size
Bad$94K$94K/yr · 45K searches
Review moat
Bad12,187.27avg incumbent reviews — the moat a new listing must climb
Competition
Bad81%top-5 click share — a locked-up shelf
Growth
Bad-28.4%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, spring valley magnesium is a $94K/yr Amazon United States market (45K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Aug. Verdict: Skip it — 43/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
spring valley magnesium market data
- Units sold / yr
- 4K–5K
- avg 250–500/product
- Revenue / yr
- $71K–$89K
- units × avg price
- Conversion rate
- 11.8%
- Avg BSR
- #1,686
- Page quality
- 0%
- Prime
- 45%
- Sponsored
- 64%
- Out of stock
- 4.1%
- Avg brand age
- 57 months
- Avg seller age
- 142 days
Competition & brand share
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 flat
Sellers
122
Top-5 brand share
84%
Top 20: 100%
Top-5 click share
81%
Top 20: 100%
Open market
12%
- Spring Health35%
- IBQIBQ26%
- 4 TOP CARE8%
- KP+8%
- Nature's Bounty6%
- Generic5%
- Open — no brand owns it (3 brands, 12%)
Demand & seasonality
Weekly Amazon search volume, last 101 weeks — -28.4% search growth over the last 90 days.Peak months: Aug · busiest ÷ quietest = 1.7×
Top spring valley magnesium search terms
- spring valley magnesium36K/yr
- spring valley magnesium 400 mg4K/yr
- magnesium spring valley4K/yr
Top spring valley magnesium 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 11 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Spring Health Spring Valley High Absorption Magnesium 200 mg Sleep Support 60 Capsules + Your Vitamin Guide
Spring Health$13.304.6★358 rev
Spring Valley Magnesium 400 Mg 250 Tablets by Spring Valley
IBQIBQ$16.734.5★227 rev
H4U Magnesium Glycinate & Oxide Blend 200 mg High Absorption Magnesium Supplement Supports Relaxation Muscle & Bone Health 60 Veg Capsules
4 TOP CARE$16.205.0★9 rev
Natures Bounty Magnesium 500 mg Tablets High Potency Magnesium Supplement for Bone & Muscle Health Whole Body Support 200 Count (Pack of 1)
Nature's Bounty$8.744.7★105,290 rev
KP+ Magnesium Oxide 400 mg | 250 Tablets | Supports Bone Nerve & Muscle Health | Extra Strength Magnesium Supplement | Pack of 1
KP+$25.703.1★2 rev
Newest
by launch date
Spring Valley Extra Strength Magnesium Gummies for Bone and Muscle Health 250mg 60ct + Sticker.
Generic$25.9831 rev
H4U Magnesium Glycinate & Oxide Blend 200 mg High Absorption Magnesium Supplement Supports Relaxation Muscle & Bone Health 60 Veg Capsules
4 TOP CARE$16.209 rev
KP+ Magnesium Oxide 400 mg | 250 Tablets | Supports Bone Nerve & Muscle Health | Extra Strength Magnesium Supplement | Pack of 1
KP+$25.702 rev
KP+ Magnesium 200 mg | Sleep Support | Bone & Muscle Health | 60 Vegetarian Capsules | Pack of 2
KP+$28.4611 rev
Spring Valley Magnesium 400 mg Bone & Muscle Health Tablets Dietary Supplement 250 Count Best Magnesium Supplement for Women Pastillas de Magnesio para Mujer - Set by Basket Goods
BASKETGOODS$25.157 rev
Trending
90-day click momentumKP+ Magnesium Oxide 400 mg | 250 Tablets | Supports Bone Nerve & Muscle Health | Extra Strength Magnesium Supplement | Pack of 1
KP+$25.703.1★
Spring Health Spring Valley High Absorption Magnesium 200 mg Sleep Support 60 Capsules + Your Vitamin Guide
Spring Health$13.304.6★
Spring Valley Magnesium 400 mg Bone & Muscle Health Tablets Dietary Supplement 250 Count Best Magnesium Supplement for Women Pastillas de Magnesio para Mujer - Set by Basket Goods
BASKETGOODS$25.154.1★
Magnesium 250 mg 100 Tablets + VSL Sticker.
Generic$13.305.0★
Spring Valley Magnesium 400 Mg 250 Tablets by Spring Valley
IBQIBQ$16.734.5★
What buyers say about spring valley magnesium
What buyers praise and complain about, mined from review topics.What buyers love
“Good product, works as expected”
“Best Price”
“Great magnesium support”
“Better sleep”
“Important Vitamins”
“Works as advertised”
“muscle cramping”
“Ez to swallow”
“Easy order”
“gets rid of constipation for me”
What buyers complain about
“Who knew i was low in magnesium”
“kept waking up the whole night”
“Hard to swallow”
“Messed me up bad after just one dose”
“discomfort in my stomach”
“the capsules themselves are large”
“Too strong”
“Causes me diarrhea”
“Allergic reaction”
“they broke way to easily”
Top return reasons
Common questions
- Is spring valley magnesium profitable to sell on Amazon United States?
- The niche generates $94K/yr across 11 tracked products. 90-day search growth is -28.4%. Flapen's verdict: Skip it (43/100).
- How competitive is the spring valley magnesium niche?
- 9 brands and 122 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 84% of demand.
- What do buyers complain about in spring valley magnesium?
- Top complaints mined from reviews: Magnesium, Sleep Quality, Ease Of Chewing/Swallowing. The return rate is 0.0%.
- When does demand for spring valley magnesium peak?
- Demand peaks in Aug; the busiest month runs 1.7× the quietest.
- What does it cost to enter the spring valley magnesium niche?
- Listings span $4.10–$28.46; the average listing price is $17.83 (sweet spot $15–$100). The average incumbent carries 12,187 reviews — the moat a new listing must climb.