---
title: "Nutricost Magnesium Glycinate — $222K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/nutricost-magnesium-glycinate"
last_updated: "2026-08-05T23:41:06.675Z"
locale: en
meta:
description: "Niche score 44/100 · $222K/yr market · 122K searches/yr · $17.40 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $222K/yr market · 122K searches/yr · $17.40 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Nutricost Magnesium Glycinate — $222K/yr Amazon US Niche (2026) - Flapen"
---
# **nutricost magnesium glycinate**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 42Growth 41Conversion 89Competition 12Returns 100Price range 67Avg price 81Brand share 0Review moat 35Quality gap 20
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****10.4%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$17.40**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$10.87–$23.48**
cheapest 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**
**Okay****3,025.5**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****86%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
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 ~~](https://flapen.com/research/methodology)
## **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.
4K3KSpike '24Holiday '24Prime Day '25Spike '25Black Friday '25Spike '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/health-household/nutricost-magnesium-glycinate/trend)
## **Top nutricost magnesium glycinate search terms**
- **nutricost magnesium glycinate**69K/yr+20.1%10.2% conv. - **nutricost magnesium**27K/yr-1.4%7.4% conv. - **magnesium glycinate nutricost**18K/yr+5.5%11.4% conv. - **magnesium nutricost**10K/yr+3.5%8.7% conv. [**All search terms **](https://flapen.com/research/us/health-household/nutricost-magnesium-glycinate/search-terms)
## **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.
0%10%$22K20%$44K30%$66K40%$89K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutricost Magnesium+ Extra Strength 420mg 240 Capsules Gluten Free Vegan**Nutricost**$19.55**4.5★8,223 rev](https://www.amazon.com/dp/B08VW9496D) [2**Nutricost Magnesium Glycinate Capsules 180 Capsules 210mg**Nutricost**$15.43**4.7★3,197 rev](https://www.amazon.com/dp/B0CV2RSRFX) [3**Nutricost Magnesium Glycinate Capsules (210mg) 360 Capsules**Nutricost**$23.48**4.7★3,197 rev](https://www.amazon.com/dp/B0CV2SXX5M) [4**Nutricost Magnesium Glycinate Powder (250 Grams) Unflavored**Nutricost**$19.50**4.4★1,553 rev](https://www.amazon.com/dp/B06XXSKN4W) [5**Nutricost Magnesium Glycinate + Malate (250mg) 120 Caps High Absorption**Nutricost**$14.34**4.9★68 rev](https://www.amazon.com/dp/B0G3XTJFBQ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nutricost Magnesium Glycinate + Malate (250mg) 120 Caps High Absorption**Nutricost**$14.34**68 rev8mo ago](https://www.amazon.com/dp/B0G3XTJFBQ) [**Nutricost Triple Magnesium Complex 300mg 120 Capsules 60 Servings**Nutricost**$19.49**314 rev1y ago](https://www.amazon.com/dp/B0DJ1NFCS3) [**Nutricost Magnesium Glycinate Capsules 180 Capsules 210mg**Nutricost**$15.43**3,197 rev2y ago](https://www.amazon.com/dp/B0CV2RSRFX) [**Nutricost Magnesium Glycinate Capsules (210mg) 360 Capsules**Nutricost**$23.48**3,197 rev2y ago](https://www.amazon.com/dp/B0CV2SXX5M) [**Nutricost Magnesium Glycinate Capsules 90 Capsules 210mg Per Serving**Nutricost**$10.87**3,197 rev2y ago](https://www.amazon.com/dp/B0CV25P146)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nutricost Magnesium Glycinate + Malate (250mg) 120 Caps High Absorption**Nutricost**$14.34**4.9★**▲ 122%**](https://www.amazon.com/dp/B0G3XTJFBQ) [**Nutricost Magnesium Glycinate Capsules (210mg) 360 Capsules**Nutricost**$23.48**4.7★**▲ 48%**](https://www.amazon.com/dp/B0CV2SXX5M) [**Nutricost Triple Magnesium Complex 300mg 120 Capsules 60 Servings**Nutricost**$19.49**4.8★**— 4%**](https://www.amazon.com/dp/B0DJ1NFCS3) [**Nutricost Magnesium+ Extra Strength 420mg 240 Capsules Gluten Free Vegan**Nutricost**$19.55**4.5★**— 9%**](https://www.amazon.com/dp/B08VW9496D) [**Nutricost Magnesium Glycinate Capsules 180 Capsules 210mg**Nutricost**$15.43**4.7★**▼ 15%**](https://www.amazon.com/dp/B0CV2RSRFX)
**~~View all trending →~~**
## **What buyers say about nutricost magnesium glycinate**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**18%
*“Helps With Sleep”*
**Magnesium**15%
*“Best Magnesium Supplement”*
**Quality-Overall**15%
*“Best quality”*
**Value For Money**8%
*“Good Value”*
**Advertised Vs Actual Product**4%
*“The product does everything as advertised”*
**Vitamin**4%
*“Good value quality vitamin good value”*
**Dosage**2%
*“easy to adjust the dose”*
**Stress/Anxiety**2%
*“reduced my stress”*
**Muscle Pain Relief**2%
*“relaxes my muscles”*
**Ease Of Chewing/Swallowing**2%
*“Easy to swallow”*
### **What buyers complain about **
**Taste-Overall**11%
*“Off taste”*
**Magnesium**11%
*“Apparently everyone is magnesium deficient”*
**Dosage**10%
*“Too many pills for to low of a dose”*
**Sleep Quality**7%
*“Just gave me terrible sleep”*
**Ingredients-Overall**4%
*“Composition changed beware”*
**Value For Money**4%
*“Not a good value at all”*
**Smell**3%
*“It has a horrible smell and taste”*
**Flavor**3%
*“In reality it probably means no flavor was added to it”*
**Acid Regulator/Stomach Ache Relief**3%
*“upset my stomach”*
**Size-Overall**3%
*“These capsules are a little big”*
### **Top return reasons **
**Taste-Overall**37%
**Magnesium**20%
**Value For Money**13%
**Sleep Quality**7%
**Ingredients-Overall**7%
**Dosage**7%
**Product Condition**7%
**Functionality-Overall**3%
## **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.
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