---
title: "Magnesium Glycinate 100mg — Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/magnesium-glycinate-100mg"
last_updated: "2026-08-12T16:28:02.668Z"
locale: en
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description: "Amazon product research for magnesium glycinate 100mg: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for magnesium glycinate 100mg: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Magnesium Glycinate 100mg — Amazon US Product Research"
---
# **Magnesium Glycinate 100mg**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 89Growth 24Conversion 90Competition 16Returns 100Price range 73Avg price 87Brand share 0Review moat 23Quality gap 18
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****10.7%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Great****$1.6M**
$1.6M/yr · 781K searches
**Avg price**
**Great****$19.60**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$8.48–$32.57**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-1.7%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****8,211.73**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****81%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
## **Is magnesium glycinate 100mg profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, magnesium glycinate 100mg is a $1.6M/yr Amazon United States market (781K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in May–Jun–Jul. Verdict: Skip it — 49/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **magnesium glycinate 100mg market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **80K–100K**
- avg 6,000–8,000/product
- **Revenue / yr**
- **$1.6M–$2.0M**
- units × avg price
- **Conversion rate**
- **10.7%**
- **Avg BSR**
- **#197**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **55%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **50 months**
- **Avg seller age**
- **153 days**
## **Competition: brands, sellers & click share**
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **—flat
**Sellers**
**61**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**81%**
Top 20: 100%
**Open market**
**0%**
- NOW Foods84% - Pure Encapsulations7% - PureFormulas5% - Nature Made3% - Metagenics1% - Open — no brand owns it (0%)
## **magnesium glycinate 100mg demand & seasonality**
Weekly Amazon search volume, last 102 weeks — -1.7% search growth over the last 90 days.
40K30KHoliday '24Spike '25 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul · busiest ÷ quietest = 3.1×
[**Open Trend **](https://flapen.com/research/us/health-household/magnesium-glycinate-100mg/trend)
## **Top magnesium glycinate 100mg search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **now magnesium glycinate**248K/yr+2.4%11.2% conv. - **magnesium glycinate 100mg**177K/yr-15.5%6.4% conv. - **magnesium glycinate now**70K/yr-8.3%12.6% conv. - **now foods magnesium glycinate**54K/yr+30.9%9.3% conv. - **now magnesium**57K/yr-1.6%6.8% conv. - **magnesium glycinate 100 mg**25K/yr+18.9%6.6% conv. - **magnesium now**23K/yr-5.3%7.9% conv. - **magnesium glycinate now foods**13K/yr+36.7%11.2% conv. - **magnesium 100mg**17K/yr+10.8%4.3% conv. - **now magnesium glycinate 400 mg**19K/yr-26.9%7.4% conv. [**All search terms **](https://flapen.com/research/us/health-household/magnesium-glycinate-100mg/search-terms)
## **Top magnesium glycinate 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%$164K20%$328K30%$492K40%$655K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NOW Foods Supplements Magnesium Glycinate 100 mg Highly Absorbable Form 180 Tablets**NOW Foods**$19.07**4.7★8,333 rev](https://www.amazon.com/dp/B07NWMVMT1) [2**Now Foods Magnesium Glycinate 240 Tablets - Supports Healthy Muscle and Nerve Functions - Non-GMO**NOW Foods**$28.86**4.8★999 rev](https://www.amazon.com/dp/B0CB984SHQ) [3**Now Supplements Magnesium Glycinate with BioPerine 180 Veg Capsules**NOW Foods**$17.48**4.7★945 rev](https://www.amazon.com/dp/B0D7XY7K4T) [4**NOW Supplements Magnesium Glycinate 100 mg Highly Absorbable Form 90 Tablets**NOW Foods**$13.03**4.7★8,333 rev](https://www.amazon.com/dp/B0FXYLDGD1) [5**Pure Encapsulations Magnesium (Glycinate) - Supplement to Support Stress Relief Sleep Heart Health Nerves Muscles and Metabolism* - with Magnesium Glycinate - 90 Capsules**Pure Encapsulations**$26.10**4.7★49,969 rev](https://www.amazon.com/dp/B07P5K7DQP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**NOW Supplements Magnesium Glycinate 100 mg Highly Absorbable Form 90 Tablets**NOW Foods**$13.03**8,333 rev9mo ago](https://www.amazon.com/dp/B0FXYLDGD1) [**Now Supplements Magnesium Glycinate with BioPerine 60 Veg Capsules**NOW Foods**$8.48**449 rev1y ago](https://www.amazon.com/dp/B0DC233YMG) [**Now Supplements Magnesium Glycinate with BioPerine 180 Veg Capsules**NOW Foods**$17.48**945 rev2y ago](https://www.amazon.com/dp/B0D7XY7K4T) [**NOW Foods Supplements Magnesium 400 mg Supports Energy Production Enzyme Function Nervous System Support 360 Veg Capsules**NOW Foods**$30.45**549 rev2y ago](https://www.amazon.com/dp/B0053DT06O) [**Nature Made High Absorption Magnesium Glycinate Gummies 40 Count**Nature Made**$12.18**3,364 rev3y ago](https://www.amazon.com/dp/B0CBVZ9B2G)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Metagenics Magnesium Glycinate 100mg-Highly Absorbable Magnesium Supplement for Sleep Stress Relief & Muscle Relaxation - Bone Heart & Nerve Health-Non-GMO Gluten-Free-120 Tablets**Metagenics**$32.57**4.7★**▲ 49%**](https://www.amazon.com/dp/B009601964) [**Nature Made High Absorption Magnesium Glycinate Gummies 40 Count**Nature Made**$12.18**4.6★**▲ 34%**](https://www.amazon.com/dp/B0CBVZ9B2G) [**NOW Supplements Magnesium Glycinate 100 mg Highly Absorbable Form 90 Tablets**NOW Foods**$13.03**4.7★**▲ 28%**](https://www.amazon.com/dp/B0FXYLDGD1) [**Now Supplements Magnesium Glycinate with BioPerine 180 Veg Capsules**NOW Foods**$17.48**4.7★**▲ 26%**](https://www.amazon.com/dp/B0D7XY7K4T) [**Pure Encapsulations Magnesium (Glycinate) - Supplement to Support Stress Relief Sleep Heart Health Nerves Muscles and Metabolism* - with Magnesium Glycinate - 90 Capsules**Pure Encapsulations**$26.10**4.7★**— 2%**](https://www.amazon.com/dp/B07P5K7DQP)
**~~View all trending →~~**
## **What reviews say buyers love and hate about magnesium glycinate 100mg**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**23%
*“Help with sleep”*
**Quality-Overall**19%
*“Better Quality than most”*
**Magnesium**13%
*“Best magnesium supplement”*
**Vitamin**4%
*“Favorite vitamin”*
**Value For Money**3%
*“Good Value”*
**Advertised Vs Actual Product**3%
*“As advertised”*
**Muscle Pain Relief**3%
*“Eases muscle cramping”*
**Stress/Anxiety**2%
*“It also helps with stress”*
**Ease Of Chewing/Swallowing**2%
*“I have to choke them down so having a good tasting chew is a winner”*
**Taste-Overall**2%
*“There is no unpleasant taste”*
### **What buyers complain about **
**Sleep Quality**15%
*“I was having trouble sleeping”*
**Magnesium**7%
*“Maybe not pure magnesium glycinate or no quality control”*
**Size-Overall**6%
*“These are extremely large tablets”*
**Dosage**5%
*“High dose”*
**Side Effects**5%
*“Bad Side effects”*
**Acid Regulator/Stomach Ache Relief**4%
*“I quickly began having bloating”*
**Quality-Overall**4%
*“Bad quality”*
**Functionality-Overall**4%
*“in my case it just didnt stand out as particularly effective”*
**Ease Of Chewing/Swallowing**3%
*“mushy chew”*
**Taste-Overall**3%
*“Weird Taste”*
### **Top return reasons **
**Magnesium**24%
**Dosage**14%
**Functionality-Overall**13%
**Acid Regulator/Stomach Ache Relief**10%
**Size-Overall**5%
**Sleep Quality**5%
**Value For Money**5%
**Salt Content**3%
**Ease Of Cleaning**3%
**Eco Friendliness**3%
## **Common magnesium glycinate 100mg questions**
- **Is magnesium glycinate 100mg profitable to sell on Amazon United States?**
- The niche generates $1.6M/yr across 11 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -1.7%. Flapen's verdict: Skip it (49/100).
- **How competitive is the magnesium glycinate 100mg niche?**
- 5 brands and 61 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in magnesium glycinate 100mg?**
- Top complaints mined from reviews: Sleep Quality, Magnesium, Size-Overall. The return rate is 0.0%.
- **When does demand for magnesium glycinate 100mg peak?**
- Demand peaks in May–Jun–Jul; the busiest month runs 3.1× the quietest.
- **What does it cost to enter the magnesium glycinate 100mg niche?**
- Listings span $8.48–$32.57; the average listing price is $19.60 (sweet spot $15–$100). The average incumbent carries 8,212 reviews — the moat a new listing must climb.
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