Is magnesium for sleep profitable to sell on Amazon United States?

The niche generates $320K/yr across 5 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -12.9%. Flapen's verdict: Skip it (42/100).

How competitive is the magnesium for sleep niche?

3 brands and 581 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in magnesium for sleep?

Top complaints mined from reviews: Functionality-Overall, Sleep Quality, Taste-Overall. The return rate is 0.0%.

When does demand for magnesium for sleep peak?

Demand peaks in Feb–Mar–Aug–Sep–Oct–Dec; the busiest month runs 7.5× the quietest.

What does it cost to enter the magnesium for sleep niche?

Listings span $11.55–$26.13; the average listing price is $18.13 (sweet spot $15–$100). The average incumbent carries 4,056 reviews — the moat a new listing must climb.

Magnesium for Sleep

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Great10.5%

search→purchase rate — share of searches ending in a sale

Avg price

Great$18.13

avg listing price — sweet spot $15–$100

Price range

Great$11.55–$26.13

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Good$320K

$320K/yr · 168K searches

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Review moat

Bad4,055.8

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-12.9%

90-day search growth — must beat 0% to launch

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Is magnesium for sleep profitable on Amazon?

According to Flapen's Amazon United States niche tracking, magnesium for sleep is a $320K/yr Amazon United States market (168K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Feb–Mar–Aug–Sep–Oct–Dec. Verdict: Skip it — 42/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

magnesium for sleep market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 20K–25K; avg 4,000–5,000/product
Revenue / yr: $363K–$453K; units × avg price
Conversion rate: 10.5%
Avg BSR: #228
Page quality: 0%
Prime: 100%
Sponsored: 80%
Out of stock: 0.0%
Avg brand age: 45 months
Avg seller age: 155 days

Competition: brands, sellers & click share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

3 flat

Sellers

581

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

OLLY70%
Natural Rhythm19%
NOW Foods11%

magnesium for sleep demand & seasonality

Weekly Amazon search volume, last 104 weeks — -12.9% search growth over the last 90 days.

Peak months: Feb, Mar, Aug, Sep, Oct, Dec · busiest ÷ quietest = 7.5×

Open Trend

Top magnesium for sleep search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

olly magnesium gummies49K/yr -8.9%12.2% conv.
magnesium inositol23K/yr -46.4%2.6% conv.
olly magnesium16K/yr -9.3%8.1% conv.
olly relaxing magnesium gummies12K/yr -1.7%16.2% conv.
triple calm magnesium14K/yr -8.7%11.1% conv.
magnesium relax9K/yr -1.8%0.9% conv.
magnesio inositol10K/yr -3.0%1.7% conv.
relaxing magnesium7K/yr -21.3%9.1% conv.
natural rhythm triple calm magnesium5K/yr +18.6%15.2% conv.
magnesium olly5K/yr -20.6%12.8% conv.

All search terms

Top magnesium for sleep 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 5 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

OLLY Relaxing Magnesium Gummies Supports Muscle Relaxation* Magnesium Citrate Raspberry Lavender Flavor 15 Day Supply - 60 Count

OLLY$13.134.6★1,550 rev

OLLY Relaxing Magnesium Gummies Supports Muscle Relaxation * Magnesium Citrate Raspberry Lavender Flavored 30 Day Supply - 120 Count

OLLY$26.134.6★1,550 rev

Natural Rhythm Triple Calm Magnesium Complex - 120 Capsules Chelated Magnesium Glycinate Taurate & Malate High Absorption Supplement for Sleep Stress Muscle & Heart Support Non-GMO Vegan

Natural Rhythm$21.414.6★10,945 rev

NOW Foods Supplements powder Magnesium Inositol Relax Nervous System Support* Fizzy Lemonade Flavor 16-Ounce

NOW Foods$18.434.6★550 rev

OLLY Kids Chillax Gummy For a Calm and Relaxed Mood* Magnesium L-Theanine Lemon Balm Extract Chewable Supplement Sherbet Flavored 25 Day Supply - 50 Count (Packaging May Vary)

OLLY$11.554.4★5,684 rev

Newest

by launch date

OLLY Relaxing Magnesium Gummies Supports Muscle Relaxation * Magnesium Citrate Raspberry Lavender Flavored 30 Day Supply - 120 Count

OLLY$26.131,550 rev

11mo ago

OLLY Relaxing Magnesium Gummies Supports Muscle Relaxation* Magnesium Citrate Raspberry Lavender Flavor 15 Day Supply - 60 Count

OLLY$13.131,550 rev

1y ago

OLLY Kids Chillax Gummy For a Calm and Relaxed Mood* Magnesium L-Theanine Lemon Balm Extract Chewable Supplement Sherbet Flavored 25 Day Supply - 50 Count (Packaging May Vary)

OLLY$11.555,684 rev

4y ago

NOW Foods Supplements powder Magnesium Inositol Relax Nervous System Support* Fizzy Lemonade Flavor 16-Ounce

NOW Foods$18.43550 rev

9y ago

Natural Rhythm Triple Calm Magnesium Complex - 120 Capsules Chelated Magnesium Glycinate Taurate & Malate High Absorption Supplement for Sleep Stress Muscle & Heart Support Non-GMO Vegan

Natural Rhythm$21.4110,945 rev

10y ago

What reviews say buyers love and hate about magnesium for sleep

What buyers praise and complain about, mined from review topics.

What buyers love

Sleep Quality24%

“Helps with sleep”

Quality-Overall13%

“consistent quality”

Magnesium11%

“These gummies are a nice way to get more magnesium in my diet”

Efficiency6%

“Effective”

Soothing Effect4%

“also very calming”

Taste-Overall4%

“These gummies taste good”

Muscle Pain Relief4%

“Felt like muscles relaxed”

Stress/Anxiety4%

“Helps anxiety”

Vitamin4%

“Great vitamin supplement”

Advertised Vs Actual Product3%

“Works as advertised”

What buyers complain about

Functionality-Overall10%

“Didnt work”

Sleep Quality9%

“Not meant for sleep”

Taste-Overall7%

“Not the best taste for kids”

Magnesium7%

“Does not contain magnesium glycinate”

Acid Regulator/Stomach Ache Relief6%

“Stomach pain”

Quality-Overall4%

“Filled with crap”

Advertised Vs Actual Product3%

“I think this is tricky and misleading”

Flavor3%

“problem is the flavor”

Heart Health3%

“dropped my heart rate too low when using”

Regulates Digestion2%

“I actually found that it gave me stomach cramps”

Top return reasons

Value For Money29%

Taste-Overall14%

Joint Pain14%

Sweetness14%

Magnesium14%

Age Suitability14%

Common magnesium for sleep questions

Is magnesium for sleep profitable to sell on Amazon United States?: The niche generates $320K/yr across 5 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -12.9%. Flapen's verdict: Skip it (42/100).
How competitive is the magnesium for sleep niche?: 3 brands and 581 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in magnesium for sleep?: Top complaints mined from reviews: Functionality-Overall, Sleep Quality, Taste-Overall. The return rate is 0.0%.
When does demand for magnesium for sleep peak?: Demand peaks in Feb–Mar–Aug–Sep–Oct–Dec; the busiest month runs 7.5× the quietest.
What does it cost to enter the magnesium for sleep niche?: Listings span $11.55–$26.13; the average listing price is $18.13 (sweet spot $15–$100). The average incumbent carries 4,056 reviews — the moat a new listing must climb.