nutricost magnesium glycinate
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Great10.4%search→purchase rate — share of searches ending in a sale
Avg price
Great$17.40avg listing price — sweet spot $15–$100
Price range
Good$10.87–$23.48cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Okay$222K$222K/yr · 122K searches
Growth
Okay+12.4%90-day search growth — must beat 0% to launch
Review moat
Okay3,025.5avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
Bad86%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, nutricost magnesium glycinate is a $222K/yr Amazon United States market (122K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 44/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
nutricost magnesium glycinate market data
- Units sold / yr
- 13K–15K
- avg 1,500–2,000/product
- Revenue / yr
- $218K–$261K
- units × avg price
- Conversion rate
- 10.4%
- Avg BSR
- #241
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 60 months
- Avg seller age
- 158 days
Competition & brand share
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.Brands
1 flat
Sellers
3
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
86%
Top 20: 100%
Open market
0%
- Nutricost100%
Demand & seasonality
Weekly Amazon search volume, last 99 weeks — +12.4% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top nutricost magnesium glycinate search terms
- nutricost magnesium glycinate69K/yr
- nutricost magnesium27K/yr
- magnesium glycinate nutricost18K/yr
- magnesium nutricost10K/yr
Top nutricost magnesium glycinate 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 8 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nutricost Magnesium+ Extra Strength 420mg 240 Capsules Gluten Free Vegan
Nutricost$19.554.5★8,223 rev
Nutricost Magnesium Glycinate Capsules 180 Capsules 210mg
Nutricost$15.434.7★3,197 rev
Nutricost Magnesium Glycinate Capsules (210mg) 360 Capsules
Nutricost$23.484.7★3,197 rev
Nutricost Magnesium Glycinate Powder (250 Grams) Unflavored
Nutricost$19.504.4★1,553 rev
Nutricost Magnesium Glycinate + Malate (250mg) 120 Caps High Absorption
Nutricost$14.344.9★68 rev
Newest
by launch dateNutricost Magnesium Glycinate + Malate (250mg) 120 Caps High Absorption
Nutricost$14.3468 rev
Nutricost Triple Magnesium Complex 300mg 120 Capsules 60 Servings
Nutricost$19.49314 rev
Nutricost Magnesium Glycinate Capsules 180 Capsules 210mg
Nutricost$15.433,197 rev
Nutricost Magnesium Glycinate Capsules (210mg) 360 Capsules
Nutricost$23.483,197 rev
Nutricost Magnesium Glycinate Capsules 90 Capsules 210mg Per Serving
Nutricost$10.873,197 rev
Trending
90-day click momentumNutricost Magnesium Glycinate + Malate (250mg) 120 Caps High Absorption
Nutricost$14.344.9★
Nutricost Magnesium Glycinate Capsules (210mg) 360 Capsules
Nutricost$23.484.7★
Nutricost Triple Magnesium Complex 300mg 120 Capsules 60 Servings
Nutricost$19.494.8★
Nutricost Magnesium+ Extra Strength 420mg 240 Capsules Gluten Free Vegan
Nutricost$19.554.5★
Nutricost Magnesium Glycinate Capsules 180 Capsules 210mg
Nutricost$15.434.7★
What buyers say about nutricost magnesium glycinate
What buyers praise and complain about, mined from review topics.What buyers love
“Helps With Sleep”
“Best Magnesium Supplement”
“Best quality”
“Good Value”
“The product does everything as advertised”
“Good value quality vitamin good value”
“easy to adjust the dose”
“reduced my stress”
“relaxes my muscles”
“Easy to swallow”
What buyers complain about
“Off taste”
“Apparently everyone is magnesium deficient”
“Too many pills for to low of a dose”
“Just gave me terrible sleep”
“Composition changed beware”
“Not a good value at all”
“It has a horrible smell and taste”
“In reality it probably means no flavor was added to it”
“upset my stomach”
“These capsules are a little big”
Top return reasons
Common questions
- Is nutricost magnesium glycinate profitable to sell on Amazon United States?
- The niche generates $222K/yr across 8 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +12.4%. Flapen's verdict: Skip it (44/100).
- How competitive is the nutricost magnesium glycinate niche?
- 1 brands and 3 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in nutricost magnesium glycinate?
- Top complaints mined from reviews: Taste-Overall, Magnesium, Dosage. The return rate is 0.0%.
- When does demand for nutricost magnesium glycinate peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the nutricost magnesium glycinate niche?
- Listings span $10.87–$23.48; the average listing price is $17.40 (sweet spot $15–$100). The average incumbent carries 3,026 reviews — the moat a new listing must climb.