Magnesium for Pregnant Women
Skip itA deep review moat (13,391 avg reviews) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$22.13avg listing price — sweet spot $15–$100
Price range
Good$4.10–$45.30cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good6.5%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Competition
Okay63%top-5 click share — leaders hold, buyers still browse
Market size
Bad$93K$93K/yr · 65K searches
Growth
Bad-3.2%90-day search growth — must beat 0% to launch
Review moat
Bad13,391.11avg incumbent reviews — the moat a new listing must climb
Is magnesium for pregnant women profitable on Amazon?
According to Flapen's Amazon United States niche tracking, magnesium for pregnant women is a $93K/yr Amazon United States market (65K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Mar–Apr–May. Verdict: Skip it — 48/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
magnesium for pregnant women 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
- $66K–$89K
- units × avg price
- Conversion rate
- 6.5%
- Avg BSR
- #241
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 94%
- Out of stock
- 2.8%
- Avg brand age
- 61 months
- Avg seller age
- 147 days
Competition: brands, sellers & click share
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.Brands
13 flat
Sellers
640
Top-5 brand share
79%
Top 20: 100%
Top-5 click share
63%
Top 20: 100%
Open market
16%
- Pink Stork32%
- Nature Made16%
- THORNE14%
- bird&be10%
- Pure Encapsulations7%
- Perelel5%
- Open — no brand owns it (7 brands, 16%)
magnesium for pregnant women demand & seasonality
Weekly Amazon search volume, last 104 weeks — -3.2% search growth over the last 90 days.Peak months: Mar, Apr, May · busiest ÷ quietest = 2.6×
Top magnesium for pregnant women search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- magnesium for pregnant women14K/yr
- magnesium pregnancy10K/yr
- magnesium for pregnancy11K/yr
- magnesium pregnancy supplement7K/yr
- magnesium prenatal5K/yr
- pregnancy magnesium5K/yr
- pregnancy safe magnesium4K/yr
- prenatal magnesium3K/yr
- best magnesium for pregnancy2K/yr
- magnesium pregnancy safe3K/yr
Top magnesium for pregnant women 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 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Pink Stork Magnesium Glycinate with Vitamin D 60 Capsules
Pink Stork$28.324.6★889 rev
THORNE - Magnesium Glycinate - Supports Restful Sleep Muscle Relaxation Heart Health & Metabolism* - Chelated Magnesium Capsules - Third-Party Certified - Gluten Dairy & Soy-Free - 90 Servings
THORNE$25.394.7★2,847 rev
Nature Made Magnesium 250mg 100 Tablets
Nature Made$4.104.7★27,696 rev
bird&be Calcium + Magnesium + Vitamin D3 Supplement | Bone Strength & Muscle Relaxation | Pregnancy & Breastfeeding Safe | Bioavailable Mineral Boost | Vegan
bird&be$25.314.6★33 rev
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★49,969 rev
Newest
by launch date
Pink Stork Magnesium Complex for Women 8 Forms 60 Capsules
Pink Stork$24.7547 rev
THORNE - Magnesium Glycinate - Supports Restful Sleep Muscle Relaxation Heart Health & Metabolism* - Chelated Magnesium Capsules - Third-Party Certified - Gluten Dairy & Soy-Free - 90 Servings
THORNE$25.392,847 rev
OLLY Relaxing Magnesium Gummies Supports Muscle Relaxation* Magnesium Citrate Raspberry Lavender Flavor 15 Day Supply - 60 Count
OLLY$13.131,550 rev
bird&be Calcium + Magnesium + Vitamin D3 Supplement | Bone Strength & Muscle Relaxation | Pregnancy & Breastfeeding Safe | Bioavailable Mineral Boost | Vegan
bird&be$25.3133 rev
Perelel Sleep Support Magnesium Powder Blend with Lemon Balm Relaxing Herbal Formula Soy & Gluten Free Non GMO Honey Lemon Flavor 2.43 Oz
Perelel$37.8876 rev
Trending
90-day click momentumbird&be Calcium + Magnesium + Vitamin D3 Supplement | Bone Strength & Muscle Relaxation | Pregnancy & Breastfeeding Safe | Bioavailable Mineral Boost | Vegan
bird&be$25.314.6★
Nature Made High Absorption Magnesium Glycinate Gummies 40 Count
Nature Made$12.184.6★
Pink Stork Magnesium Complex for Women 8 Forms 60 Capsules
Pink Stork$24.754.5★
Needed Hydration Support with Electrolytes for Pregnancy & During Lactation & Trace Minerals 30 Packets Lightly Sweetened with Real Fruit Lemon
Needed.$45.303.9★
Ritual Womens Prenatal Multivitamins - 60 Capsules - 30 Servings
Ritual$39.684.2★
What reviews say buyers love and hate about magnesium for pregnant women
What buyers praise and complain about, mined from review topics.What buyers love
“Helps me sleep”
“Amazing quality”
“Best magnesium ever”
“Great vitamin supplement”
“Great buy”
“the taste is refreshing”
“Eases muscle cramping”
“As advertised”
“Have no issues with swallowing”
“less stress”
What buyers complain about
“I was having trouble sleeping”
“Weird Taste”
“I got the wrong magnesium”
“Capsules too large”
“Bad Side effects”
“discomfort in my stomach”
“Not worth it”
“Dose is too high for me”
“in my case it just didnt stand out as particularly effective”
“If you also can't tolerate it this is not the vitamin for you”
Top return reasons
Common magnesium for pregnant women questions
- Is magnesium for pregnant women profitable to sell on Amazon United States?
- The niche generates $93K/yr across 18 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -3.2%. Flapen's verdict: Skip it (48/100).
- How competitive is the magnesium for pregnant women niche?
- 13 brands and 640 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 79% of demand.
- What do buyers complain about in magnesium for pregnant women?
- Top complaints mined from reviews: Sleep Quality, Taste-Overall, Magnesium. The return rate is 0.0%.
- When does demand for magnesium for pregnant women peak?
- Demand peaks in Mar–Apr–May; the busiest month runs 2.6× the quietest.
- What does it cost to enter the magnesium for pregnant women niche?
- Listings span $4.10–$45.30; the average listing price is $22.13 (sweet spot $15–$100). The average incumbent carries 13,391 reviews — the moat a new listing must climb.