Is myo-inositol profitable to sell on Amazon United Kingdom?

The niche generates £329K/yr across 16 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -7.8%. Flapen's verdict: Worth a look (55/100).

How competitive is the myo-inositol niche?

16 brands and 17 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 65% of demand.

What do buyers complain about in myo-inositol?

Top complaints mined from reviews: Size-Overall, Dosage, Ease Of Chewing/Swallowing. The return rate is 0.1%.

When does demand for myo-inositol peak?

Demand peaks in Aug; the busiest month runs 1.7× the quietest.

What does it cost to enter the myo-inositol niche?

Listings span £4.88–£24.45; the average listing price is £13.35 (sweet spot $15–$100). The average incumbent carries 812 reviews — the moat a new listing must climb.

myo-inositol

Worth a look

Shows low returns (0.1%), but soft demand (-7.8% this quarter) keeps it on the watch list.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Good6.8%

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

Review moat

Good812

avg incumbent reviews — the moat a new listing must climb

Brand share

Good65%

top-5 brand share — brands hold most of the demand

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Avg price

Good£13.35

avg listing price — sweet spot $15–$100

Market size

Good£329K

£329K/yr · 361K searches

Price range

Okay£4.88–£24.45

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

Competition

Okay65%

top-5 click share — leaders hold, buyers still browse

Growth

Bad-7.8%

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

Signals Low Review Barrier

According to Flapen's Amazon United Kingdom niche tracking, myo-inositol is a £329K/yr Amazon United Kingdom market (361K searches/yr). The top 5 brands hold 65% of demand. Demand peaks in Aug. Verdict: Worth a look — 55/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

myo-inositol market data

Units sold / yr: 20K–25K; avg 1,000–1,250/product
Revenue / yr: £267K–£334K; units × avg price
Conversion rate: 6.8%
Avg BSR: #187
Page quality: 0%
Prime: 100%
Sponsored: 94%
Out of stock: 1.6%
Avg brand age: 43 months
Avg seller age: 158 days

Competition & brand share

The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 falling

Sellers

Top-5 brand share

65%

Top 20: 100%

Top-5 click share

65%

Top 20: 100%

Open market

29%

NEW LEAF PRODUCTS24%
Free Soul14%
PH PROWISE Healthcare11%
Nutrivo10%
MyOva6%
WeightWorld6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -7.8% search growth over the last 90 days.

Peak months: Aug · busiest ÷ quietest = 1.7×

Open Trend

Top myo-inositol search terms

myo-inositol142K/yr -7.9%6.9% conv.
myo inositol73K/yr -8.2%6.1% conv.
pcos supplement55K/yr -12.7%5.1% conv.
pcos43K/yr -17.2%2.3% conv.
inositol 4000mg10K/yr +15.3%3.9% conv.
myoinositol4K/yr +130.9%7.5% conv.
myova6K/yr +4.3%4.5% conv.
pcos supplements6K/yr -5.4%2.0% conv.
pcos weight loss4K/yr +42.1%1.5% conv.
my ova5K/yr -10.6%4.9% conv.

All search terms

Top myo-inositol products on Amazon

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

Top sellers

by 90-day click share

Myo-Inositol PCOS Supplement - Myo Inositol Capsules PCOS Supplement Enriched with Folic Acid Vitamin B12 and Chromium - Hormone Balance for Women 120 Vegan Capsules UK Made New Leaf Vitamin B8

NEW LEAF PRODUCTS£10.294.6★476 rev

Free Soul Myo-Inositol Ultra Supplement | 4 000mg Myo-Inositol 200ug Folate 100ug Chromium Plus 10 000mg Maca for Women | Supplements for Women | Vegan & Gluten-Free | 120 Tablets

Free Soul£18.854.2★689 rev

Myo-Inositol Complex 120 Vegan Tablets 7000mg per Serving with Black Maca Root Chromium Folic Acid and Vitamin B12 | Hormonal Balance for Women Women PCOS Supplement | Premium Quality by Prowise

PH PROWISE Healthcare£8.144.2★271 rev

Myo Inositol & D Chiro Inositol - 120 Capsules | Inositol 2000mg Folic Acid Chromium | Alternative to Tablets

Nutrivo£7.854.5★329 rev

Myoplus - Myo-inositol PCOS Supplement - 4000mg Myo-Inositol 200ug Folate & 100ug Chromium Daily Intake - 120 Chewable Vegan Inositol Tablets - UK Made by MyOva

MyOva£24.454.2★2,135 rev

Newest

by launch date

Goodvita£12.4250 rev

9mo ago

Myo-Inositol Complex 120 Vegan Tablets 7000mg per Serving with Black Maca Root Chromium Folic Acid and Vitamin B12 | Hormonal Balance for Women Women PCOS Supplement | Premium Quality by Prowise

PH PROWISE Healthcare£8.14271 rev

1y ago

Inositol Capsules for Women | Myo & D-Chiro Inositol Complex with Folic Acid & Vitamin D3 | Hormone Balance Cycle Support & PCOS | 120 Capsules (2 Month Supply)

HERA VITALITY£16.02193 rev

1y ago

Natures Best Myo Inositol Powder 200g Powder 50 Servings

NATURE'S BEST£17.5465 rev

1y ago

Nutravita Myo-Inositol Tablets with Folic Acid Vitamin B6 B12 Maca and Chromium - PCOS Support Supplement - 180 Vegan Tablets - Prenatal Vitamins for Women - Alternative to Inositol Powder

Nutravita£7.22216 rev

2y ago

What buyers say about myo-inositol

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

What buyers love

Quality-Overall9%

“No complaints”

Hormonal Balance8%

“Medication that supports Hormonal health”

Ease Of Chewing/Swallowing8%

“Happy is chewable”

Value For Money7%

“Great product for price”

Energy Level5%

“best energy”

Menstrual Issues5%

“with pretty consistent periods”

Vitamin5%

“Excellent supplement”

Ease Of Use4%

“which makes daily use straightforward”

Side Effects4%

“No side effects”

Sleep Quality4%

“the quality of sleep has improved”

What buyers complain about

Size-Overall19%

“they are huge”

Dosage12%

“I don't take the recommend dosage”

Ease Of Chewing/Swallowing11%

“Impossible to swallow”

Functionality-Overall5%

“No positive results”

Value For Money5%

“have seen more expensive”

Side Effects4%

“as I didnt feel safe continuing after the first dose”

Nutritional Content3%

“after taking these supplements for around 6 months and have found myself feeling totally knackered all day. as per my previous state., getting more snappy with people, hands shaking, wanting to snack on unhealthy foods and very bloated compared with when I was taking these”

Inflammation2%

“Acne breakouts”

Taste-Overall2%

“doesnt really taste like anything so can easily take it with water”

Allergies2%

“Gave me the worst cystic acne breakout on my chin”

Common questions

Is myo-inositol profitable to sell on Amazon United Kingdom?: The niche generates £329K/yr across 16 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -7.8%. Flapen's verdict: Worth a look (55/100).
How competitive is the myo-inositol niche?: 16 brands and 17 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 65% of demand.
What do buyers complain about in myo-inositol?: Top complaints mined from reviews: Size-Overall, Dosage, Ease Of Chewing/Swallowing. The return rate is 0.1%.
When does demand for myo-inositol peak?: Demand peaks in Aug; the busiest month runs 1.7× the quietest.
What does it cost to enter the myo-inositol niche?: Listings span £4.88–£24.45; the average listing price is £13.35 (sweet spot $15–$100). The average incumbent carries 812 reviews — the moat a new listing must climb.

myo-inositol

myo-inositol market data

Competition & brand share

Demand & seasonality

Top myo-inositol search terms

Top myo-inositol products on Amazon

Top sellers

Newest

Trending

What buyers say about myo-inositol

What buyers love

What buyers complain about

Common questions

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