---
title: "Magnesium Citrate 100mg — $4K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/magnesium-citrate-100mg"
last_updated: "2026-08-12T16:27:37.384Z"
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description: "Amazon product research for magnesium citrate 100mg: $4K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for magnesium citrate 100mg: $4K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Magnesium Citrate 100mg — $4K/mo Amazon US Product Research"
---
# **Magnesium Citrate 100mg**
**Skip it**
A small market ($42K/yr) — this niche doesn't clear our bar today.
Market size 11Growth 51Conversion 74Competition 32Returns 100Price range 65Avg price 78Brand share 44Review moat 23Quality gap 32
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$16.04**
avg listing price — sweet spot $15–$100
**Conversion**
**Good****6.9%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$4.92–$33.48**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Good****+21.0%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****79%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****66%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****8,584.21**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****$42K**
$42K/yr · 38K searches
## **Is magnesium citrate 100mg profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, magnesium citrate 100mg is a $42K/yr Amazon United States market (38K searches/yr). The top 5 brands hold 79% of demand. Verdict: Skip it — 47/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **magnesium citrate 100mg market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **$48K–$64K**
- units × avg price
- **Conversion rate**
- **6.9%**
- **Avg BSR**
- **#970**
- **Page quality**
- **0%**
- **Prime**
- **89%**
- **Sponsored**
- **63%**
- **Out of stock**
- **4.0%**
- **Avg brand age**
- **85 months**
- **Avg seller age**
- **157 days**
## **Competition: brands, sellers & click share**
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **—flat
**Sellers**
**138**
**Top-5 brand share**
**79%**
Top 20: 100%
**Top-5 click share**
**66%**
Top 20: 100%
**Open market**
**16%**
- Life Extension32% - NOW Foods15% - Pure Encapsulations14% - Spring Valley12% - Nature Made6% - Nature's Bounty5% - Open — no brand owns it (7 brands, 16%)
## **magnesium citrate 100mg demand & seasonality**
Weekly Amazon search volume, last 99 weeks — +21.0% search growth over the last 90 days.
1K600Spike '24Spike '25Spike '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/health-household/magnesium-citrate-100mg/trend)
## **Top magnesium citrate 100mg search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **magnesium citrate 100mg**17K/yr+9.6%6.8% conv. - **magnesium citrate 150 mg**7K/yr+41.2%4.3% conv. - **magnesium citrate 150mg**5K/yr+95.1%1.4% conv. - **magnesium citrate 100 mg**5K/yr+1.3%10.9% conv. - **spring valley magnesium citrate**5K/yr+3.5%7.9% conv. [**All search terms **](https://flapen.com/research/us/health-household/magnesium-citrate-100mg/search-terms)
## **Top magnesium citrate 100mg 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.
0%10%$4K20%$8K30%$13K40%$17K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 19 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Life Extension Magnesium Citrate 100 mg Vegetarian Capsules Blue 100 Count**Life Extension**$7.17**4.7★3,424 rev](https://www.amazon.com/dp/B000LLULUM) [2**NOW Supplements Magnesium Citrate Enzyme Function* Nervous System Support* 120 Veg Capsules**NOW Foods**$9.97**4.7★25,502 rev](https://www.amazon.com/dp/B0014M1VII) [3**Spring Valley - Magnesium Citrate 100 mg Rapid-Release 100 Capsules**Spring Valley**$14.61**4.6★668 rev](https://www.amazon.com/dp/B00YI2ME64) [4**Life Extension Magnesium Citrate 100mg 180 Vegetarian Capsules**Life Extension**$20.00**4.7★3,424 rev](https://www.amazon.com/dp/B09H595YHB) [5**Pure Encapsulations Magnesium (Citrate) - Supplement for Sleep Heart Health Cognitive Health Bone Health Energy Muscles and Metabolism* - with Premium Magnesium - 90 Capsules**Pure Encapsulations**$19.70**4.7★13,790 rev](https://www.amazon.com/dp/B0058HWV70)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Amazon Basics Magnesium Citrate Rapid Release Capsules 100 mg 60 Count**Amazon Basics**$4.92**29 rev1mo ago](https://www.amazon.com/dp/B0GCDS7ZBL) [**Natures Bounty Magnesium Citrate High Absorption Magnesium Supplement for Whole Body Health with 150 mg Magnesium Vegetarian Gluten Free 90 Capsules**Nature's Bounty**$16.03**81 rev10mo ago](https://www.amazon.com/dp/B0FNX9BRRK) [**Arofum Magnesium Citrate Capsules for Constipation & Sleep Support - Vegan Magnesium Citrate Supplement with Vitamin B6 & L-Theanine for High Absorption - 120 Capsules Non-GMO**Arofum**$12.72**78 rev11mo ago](https://www.amazon.com/dp/B0FMNKYDL1) [**Spring Valley Extra Strength Magnesium Gummies for Bone and Muscle Health 250mg 60ct + Sticker.**Generic**$25.98**31 rev1y ago](https://www.amazon.com/dp/B0DV4F8NJ4) [**Now Supplements Magnesium Citrate Enzyme Function* 60 Veg Caps**NOW Foods**$6.86**251 rev1y ago](https://www.amazon.com/dp/B0DCDQCY7S)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Amazon Basics Magnesium Citrate Rapid Release Capsules 100 mg 60 Count**Amazon Basics**$4.92**4.8★**▲ 275%**](https://www.amazon.com/dp/B0GCDS7ZBL) [**Arofum Magnesium Citrate Capsules for Constipation & Sleep Support - Vegan Magnesium Citrate Supplement with Vitamin B6 & L-Theanine for High Absorption - 120 Capsules Non-GMO**Arofum**$12.72**4.5★**▲ 154%**](https://www.amazon.com/dp/B0FMNKYDL1) [**Spring Valley Extra Strength Magnesium Gummies for Bone and Muscle Health 250mg 60ct + Sticker.**Generic**$25.98**4.7★**▲ 139%**](https://www.amazon.com/dp/B0DV4F8NJ4) [**NOW Supplements Magnesium Citrate Enzyme Function* Nervous System Support* 120 Veg Capsules**NOW Foods**$9.97**4.7★**▲ 50%**](https://www.amazon.com/dp/B0014M1VII) [**Natures Bounty Magnesium Citrate High Absorption Magnesium Supplement for Whole Body Health with 150 mg Magnesium Vegetarian Gluten Free 90 Capsules**Nature's Bounty**$16.03**4.5★**▲ 50%**](https://www.amazon.com/dp/B0FNX9BRRK)
**~~View all trending →~~**
## **What reviews say buyers love and hate about magnesium citrate 100mg**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“It is well-made”*
**Magnesium**11%
*“Best magnesium ever”*
**Sleep Quality**9%
*“Helps me sleep”*
**Regulates Digestion**5%
*“easy to digest”*
**Vitamin**5%
*“Good supplements”*
**Efficiency**5%
*“Effective if taken as intended”*
**Value For Money**4%
*“Worth the money”*
**Advertised Vs Actual Product**4%
*“It works as advertised”*
**Ease Of Chewing/Swallowing**4%
*“is not a problem to swallow”*
**Muscle Pain Relief**3%
*“Relax your muscles”*
### **What buyers complain about **
**Size-Overall**19%
*“Too big”*
**Magnesium**8%
*“Not as good as Magnesium Glycinate”*
**Dosage**5%
*“Maybe I need a different dose”*
**Ease Of Chewing/Swallowing**4%
*“Too big for me to swallow”*
**Regulates Digestion**4%
*“I have major digestive issues”*
**Functionality-Overall**4%
*“Not effective enough”*
**Quality-Overall**4%
*“Very poor quality”*
**Sleep Quality**3%
*“Does not help with sleep”*
**Taste-Overall**3%
*“leave a bad aftertaste”*
**Smell**3%
*“Smell so terrible”*
### **Top return reasons **
**Magnesium**55%
**Functionality-Overall**9%
**Advertised Vs Actual Product**8%
**Ease Of Chewing/Swallowing**8%
**Size-Overall**6%
**Quality-Overall**3%
**Ingredients-Overall**3%
**Product Condition**3%
**Dosage**3%
**Ease Of Use**3%
## **Common magnesium citrate 100mg questions**
- **Is magnesium citrate 100mg profitable to sell on Amazon United States?**
- The niche generates $42K/yr across 19 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is +21.0%. Flapen's verdict: Skip it (47/100).
- **How competitive is the magnesium citrate 100mg niche?**
- 13 brands and 138 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 79% of demand.
- **What do buyers complain about in magnesium citrate 100mg?**
- Top complaints mined from reviews: Size-Overall, Magnesium, Dosage. The return rate is 0.0%.
- **When does demand for magnesium citrate 100mg peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the magnesium citrate 100mg niche?**
- Listings span $4.92–$33.48; the average listing price is $16.04 (sweet spot $15–$100). The average incumbent carries 8,584 reviews — the moat a new listing must climb.
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