Magnesium Citrate
Worth a lookShows a $11.8M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size
Incredible$11.8M$11.8M/yr · 6.4M searches
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Great10.3%search→purchase rate — share of searches ending in a sale
Avg price
Great$17.86avg listing price — sweet spot $15–$100
Price range
Good$6.30–$38.21cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good65%top-5 brand share — brands hold most of the demand
Competition
Good49%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-5.8%90-day search growth — must beat 0% to launch
Review moat
Bad10,892.97avg incumbent reviews — the moat a new listing must climb
Is magnesium citrate profitable on Amazon?
According to Flapen's Amazon United States niche tracking, magnesium citrate is a $11.8M/yr Amazon United States market (6.4M searches/yr). The top 5 brands hold 65% of demand. Verdict: Worth a look — 64/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
magnesium citrate market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 600K–800K
- avg 15,000–20,000/product
- Revenue / yr
- $10.7M–$14.3M
- units × avg price
- Conversion rate
- 10.3%
- Avg BSR
- #208
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 79%
- Out of stock
- 0.0%
- Avg brand age
- 58 months
- Avg seller age
- 146 days
Competition: brands, sellers & click share
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.Brands
22 rising
Sellers
137
Top-5 brand share
65%
Top 20: 99%
Top-5 click share
49%
Top 20: 87%
Open market
31%
- Nature Made20%
- NOW Foods18%
- Pure Encapsulations15%
- Nobi Nutrition7%
- Vitamatic4%
- Nutricost4%
magnesium citrate demand & seasonality
Weekly Amazon search volume, last 104 weeks — -5.8% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top magnesium citrate search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- magnesium citrate4.3M/yr
- citrato de magnesio1.2M/yr
- magnesium citrate capsules305K/yr
- magnesio citrato83K/yr
- magnesium citrate 500mg66K/yr
- citrato de magnesio para mujeres45K/yr
- now magnesium citrate70K/yr
- mag citrate42K/yr
- pure magnesium citrate45K/yr
- nature made magnesium citrate42K/yr
Top magnesium citrate 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
NOW Supplements Magnesium Citrate Enzyme Function* Nervous System Support* 120 Veg Capsules
NOW Foods$9.974.7★25,502 rev
Nature Made Magnesium Citrate 250 mg per Serving 120 Softgels
Nature Made$14.914.6★24,924 rev
Pure Encapsulations Magnesium (Citrate) - Supplement for Sleep Heart Health Cognitive Health Bone Health Energy Muscles and Metabolism* - with Premium Magnesium - 90 Capsules
Pure Encapsulations$19.704.7★13,790 rev
Magnesium Citrate Complex 500 MG for Constipation Digestion Calm & Relaxation Support | High Absorption Magnesium Supplement | Citrato de Magnesio | Non-GMO Soy-Free | 60 Mag Citrate Capsules
Nobi Nutrition$19.544.6★23,657 rev
Pure Encapsulations Magnesium (Citrate) - Supplement for Sleep Heart Health Cognitive Health Bone Health Energy Muscles and Metabolism* - with Premium Magnesium - 180 Capsules
Pure Encapsulations$33.484.7★13,790 rev
Newest
by launch date
Nature Made Extra Strength Dosage Magnesium Citrate Tablets 60 Tablets
Nature Made$13.2975 rev
A+Health Magnesium Citrate Oral Solution Saline Laxative Lemon 10 Fl Oz
A+Health$6.30460 rev
MedRite Magnesium Citrate Oral Solution Natural Lemon Flavor - Laxatives for Constipation Fast Acting. Laxatives for Constipation Stool Softeners Citrato de Magnesio (1)
MedRite$8.321,013 rev
Pure Magnesium Citrate Supplements 500mg 300 Capsules | Fat-Soluble Vitamin C Added | 100% Chelated | Only Active Ingredients
Micro Ingredients$15.64672 rev
Vitamatic Magnesium Citrate 500mg per Serving - 180 Vegetarian Capsules (Provides 150 mg of Elemental Magnesium) - Added B6 for Maximum Absorption - Supports Muscle Joint and Heart Health*
Vitamatic$9.871,957 rev
Trending
90-day click momentumNature Made Extra Strength Dosage Magnesium Citrate Tablets 60 Tablets
Nature Made$13.294.4★
A+Health Magnesium Citrate Oral Solution Saline Laxative Lemon 10 Fl Oz
A+Health$6.304.6★
NOW Supplements Magnesium Citrate Enzyme Function* Nervous System Support* 120 Veg Capsules
NOW Foods$9.974.7★
Pure Encapsulations Magnesium (Citrate) - Supplement for Sleep Heart Health Cognitive Health Bone Health Energy Muscles and Metabolism* - with Premium Magnesium - 90 Capsules
Pure Encapsulations$19.704.7★
SOLARAY Magnesium Citrate 400mg - Magnesium Supplement - Bone Health Muscle Relaxation and Heart Health Support - Vegan Gluten Free - 60 Servings 180 VegCaps
SOLARAY$18.984.7★
What reviews say buyers love and hate about magnesium citrate
What buyers praise and complain about, mined from review topics.What buyers love
“Great and consistent quality”
“Best magnesium Supplement on the Market”
“Helps me sleep”
“Effective”
“has a smooth taste”
“exactly as advertised”
“Good Price”
“Does not upset my stomach or anything”
“Quality vitamins”
“helps with muscle pain”
What buyers complain about
“Not their best magnesium gummy”
“The bottle was small”
“unpleasant aftertaste”
“Not effective”
“Misleading Dosage”
“Poor quality control”
“have difficulty getting to sleep”
“Stomach ache”
“having trouble with constipation”
“Too big for me to swallow”
Top return reasons
Common magnesium citrate questions
- Is magnesium citrate profitable to sell on Amazon United States?
- The niche generates $11.8M/yr across 33 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -5.8%. Flapen's verdict: Worth a look (64/100).
- How competitive is the magnesium citrate niche?
- 22 brands and 137 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 65% of demand.
- What do buyers complain about in magnesium citrate?
- Top complaints mined from reviews: Magnesium, Size-Overall, Taste-Overall. The return rate is 0.0%.
- When does demand for magnesium citrate peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the magnesium citrate niche?
- Listings span $6.30–$38.21; the average listing price is $17.86 (sweet spot $15–$100). The average incumbent carries 10,893 reviews — the moat a new listing must climb.