Life Extension Magnesium
Worth a lookShows low returns (0.0%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Market size
Incredible$3.8M$3.8M/yr · 1.2M searches
Avg price
Incredible$27.11avg listing price — sweet spot $15–$100
Conversion
Great11.2%search→purchase rate — share of searches ending in a sale
Price range
Great$8.38–$68.91cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+3.5%90-day search growth — must beat 0% to launch
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad19,100.5avg incumbent reviews — the moat a new listing must climb
Competition
Bad84%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Is life extension magnesium profitable on Amazon?
According to Flapen's Amazon United States niche tracking, life extension magnesium is a $3.8M/yr Amazon United States market (1.2M searches/yr). The top 5 brands hold 100% of demand. Demand peaks in May–Jul–Oct. Verdict: Worth a look — 52/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
life extension magnesium market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 150K–200K
- avg 10,000–12,500/product
- Revenue / yr
- $4.1M–$5.4M
- units × avg price
- Conversion rate
- 11.2%
- Avg BSR
- #124
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 93%
- Out of stock
- 0.0%
- Avg brand age
- 66 months
- Avg seller age
- 146 days
Competition: brands, sellers & click share
The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.Brands
5 rising
Sellers
28
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
84%
Top 20: 100%
Open market
0%
- Doctor's BEST57%
- Life Extension37%
- Pure Encapsulations2%
- Jarrow Formulas2%
- Designs for Health2%
- Open — no brand owns it (0%)
life extension magnesium demand & seasonality
Weekly Amazon search volume, last 100 weeks — +3.5% search growth over the last 90 days.Peak months: May, Jul, Oct · busiest ÷ quietest = 3.0×
Top life extension magnesium search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- life extension400K/yr
- doctors best magnesium glycinate197K/yr
- doctors best high absorption magnesium66K/yr
- life extension magnesium105K/yr
- life extension neuro-mag magnesium l-threonate51K/yr
- doctors best high absorption magnesium glycinate31K/yr
- doctors best53K/yr
- neuro mag life extension31K/yr
- neuro mag59K/yr
- magnesium glycinate doctors best33K/yr
Top life extension magnesium 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.
All 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Doctors Best High Absorption Magnesium Glycinate Lysinate Supplement for Sleep Support - Chelated Magnesium Tablets for Women & Men 200mg per Serving Supports Calm & Relaxation Vegan - 240 Count
Doctor's BEST$19.184.6★76,110 rev
Life Extension Neuro-Mag Magnesium L-Threonate Memory Health Quick Thinking Cognitive Health Support Vegetarian Non-GMO 90 Vegetarian Capsules (144 mg from 2000 mg Magtein magnesium L-threonate
Life Extension$29.014.6★24,338 rev
Doctors Best High Absorption Magnesium Glycinate Lysinate Supplement for Sleep Support - Chelated Magnesium Tablets for Women & Men 200mg per Serving Supports Calm & Relaxation Vegan - 120 Count
Doctor's BEST$12.054.6★76,110 rev
Doctors Best High Absorption Magnesium Glycinate Lysinate Supplement for Sleep Support - Chelated Magnesium Capsules for Women & Men 105 mg per Serving Calm Support Vegan - 120 Veg Caps
Doctor's BEST$14.034.7★3,711 rev
Life Extension Magnesium Glycinate Heart Health Bone Health Nerve and Muscle Support Highly absorbable Gluten-Free Non-GMO Vegetarian 90 Capsules
Life Extension$16.644.7★2,110 rev
Newest
by launch dateLife Extension Magnesium Glycinate Heart Health Bone Health Nerve and Muscle Support Highly absorbable Gluten-Free Non-GMO Vegetarian 90 Capsules
Life Extension$16.642,110 rev
Doctors Best Magnesium Glycinate Powder for Calm & Sleep Support - Magnesium Supplement for Men & Women 400 mg Per Serving 100% Chelated High Absorption Fruit Punch Flavor Gluten Free - 12.1 oz
Doctor's BEST$28.8688 rev
Life Extension NAD+ Cell Regenerator and Resveratrol Elite* nicotinamide riboside Trans-resveratrol quercetin Fisetin Heart Health Healthy Aging Vegetarian Non-GMO Gluten Free 30 Capsules
Life Extension$41.593,268 rev
Doctors Best High Absorption Magnesium Glycinate Lysinate Supplement for Sleep Support - Chelated Magnesium Capsules for Women & Men 105 mg per Serving Calm Support Vegan - 120 Veg Caps
Doctor's BEST$14.033,711 rev
Life Extension Neuro-Mag Magnesium L-Threonate 150 Vegetarian Capsules
Life Extension$50.632,062 rev
Trending
90-day click momentumDoctors Best High Absorption Magnesium Glycinate Lysinate Supplement for Sleep Support - Chelated Magnesium Tablets for Women & Men 200mg per Serving Supports Calm & Relaxation Vegan - 120 Count
Doctor's BEST$12.054.6★
Doctors Best Magnesium Glycinate Powder for Calm & Sleep Support - Magnesium Supplement for Men & Women 400 mg Per Serving 100% Chelated High Absorption Fruit Punch Flavor Gluten Free - 12.1 oz
Doctor's BEST$28.864.5★
Pure Encapsulations Magnesium (Glycinate) - Supplement to Support Stress Relief Sleep Heart Health Nerves Muscles and Metabolism* - with Magnesium Glycinate - 90 Capsules
Pure Encapsulations$26.104.7★
Life Extension NAD+ Cell Regenerator and Resveratrol Elite* nicotinamide riboside Trans-resveratrol quercetin Fisetin Heart Health Healthy Aging Vegetarian Non-GMO Gluten Free 30 Capsules
Life Extension$41.594.6★
Life Extension One-Per-Day Multivitamin Packed with Over 25 Vitamins Minerals & Plant Extracts Quercetin 5-MTHF Folate & More 1-Daily Non-GMO Gluten-Free 60 Tablets
Life Extension$16.034.5★
What reviews say buyers love and hate about life extension magnesium
What buyers praise and complain about, mined from review topics.What buyers love
“Good night's sleep”
“Great product from a trusted brand”
“These magnesium pills are amazing”
“They seem to have the best combination of vitamins”
“Great Value”
“As advertised”
“less stress”
“The first bottle worked well”
“relaxing the muscles”
“They are small enough to swallow as opposed to the tablets”
What buyers complain about
“Unable to swallow”
“Small”
“Cant sleep”
“Made me dizzy”
“Doesnt work as described”
“Maybe not pure magnesium glycinate or no quality control”
“A little low on mg”
“Poor Quality Control”
“stomach hurts”
“Waste of money”
Top return reasons
Common life extension magnesium questions
- Is life extension magnesium profitable to sell on Amazon United States?
- The niche generates $3.8M/yr across 14 tracked products. 90-day search growth is +3.5%. Flapen's verdict: Worth a look (52/100).
- How competitive is the life extension magnesium niche?
- 5 brands and 28 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in life extension magnesium?
- Top complaints mined from reviews: Ease Of Chewing/Swallowing, Size-Overall, Sleep Quality. The return rate is 0.0%.
- When does demand for life extension magnesium peak?
- Demand peaks in May–Jul–Oct; the busiest month runs 3.0× the quietest.
- What does it cost to enter the life extension magnesium niche?
- Listings span $8.38–$68.91; the average listing price is $27.11 (sweet spot $15–$100). The average incumbent carries 19,101 reviews — the moat a new listing must climb.