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agnus castus

Skip it

Soft demand (-30.1% this quarter) — this niche doesn't clear our bar today.

Market size 14Growth 10Conversion 90Competition 15Returns 100Price range 51Avg price 44Brand share 30Review moat 88Quality gap 24

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Great10.8%

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

Review moat

Great245.62

avg incumbent reviews — the moat a new listing must climb

Price range

Good£5.33–£25.23

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

Avg price

Okay£11.33

avg listing price — sweet spot $15–$100

Brand share

Okay87%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Competition

Bad82%

top-5 click share — a locked-up shelf

Market size

Bad£55K

£55K/yr · 45K searches

Growth

Bad-30.1%

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

According to Flapen's Amazon United Kingdom niche tracking, agnus castus is a £55K/yr Amazon United Kingdom market (45K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in Feb–Mar. Verdict: Skip it — 39/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

agnus castus market data

Units sold / yr
3K–4K
avg 100–250/product
Revenue / yr
£34K–£45K
units × avg price
Conversion rate
10.8%
Avg BSR
#979
Page quality
0%
Prime
92%
Sponsored
62%
Out of stock
11.5%
Avg brand age
52 months
Avg seller age
186 days

Competition & brand share

The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.

Brands

10 rising

Sellers

26

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

82%

Top 20: 100%

Open market

10%

  • Natures Aid33%
  • ALPHA0127%
  • Vita Pharma10%
  • Schwabe9%
  • A.Vogel8%
  • NAF3%
  • Open — no brand owns it (4 brands, 10%)

Demand & seasonality

Weekly Amazon search volume, last 78 weeks — -30.1% search growth over the last 90 days.
4K3KSpike '25Prime Day '25Spike '26FebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Feb, Mar · busiest ÷ quietest = 2.5×

Top agnus castus search terms

  • agnus castus29K/yr
  • vitex agnus castus8K/yr
  • agnus castus capsules6K/yr
  • agnus castus tablets1K/yr
  • angus cactus supplement1K/yr
All search terms

Top agnus castus 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.

0%10%£5K20%£11K30%£16K40%£22K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 13 tracked products in this niche — three views at once, no toggling.

What buyers say about agnus castus

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

What buyers love

Quality-Overall31%

“It seems a very good quality supplement”

Hormonal Balance24%

“Its regulating my hormones nicely xx”

Efficiency9%

“It really works”

Advertised Vs Actual Product8%

“it really does the job”

Size-Overall6%

“are small enough to take”

Regulates Digestion6%

“Anyone suffering from PMT/bloating/cravings this is what you need it really helps”

Menstrual Issues5%

“Less ups and downs with hormones, period arrives without much pain”

Vitamin4%

“It seems a very good quality supplement”

Side Effects2%

“this one doesnt do this so Im super happy I can reap the benefit without the side effects”

Value For Money2%

“Definitely worth purchasing”

What buyers complain about

Side Effects39%

“However, although I got killer headaches and stomach ache and felt really ill, emotionally I felt great”

Blood Sugar Level17%

“Have glucose hidden in the ingredients”

Allergies11%

“come under the category of people who had a nasty reaction to this after only a fairly short time”

Dosage11%

“I would certainly suggest anyone trying it for the first time to ignore the dosage suggestion”

Common questions

Is agnus castus profitable to sell on Amazon United Kingdom?
The niche generates £55K/yr across 13 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -30.1%. Flapen's verdict: Skip it (39/100).
How competitive is the agnus castus niche?
10 brands and 26 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 87% of demand.
What do buyers complain about in agnus castus?
Top complaints mined from reviews: Side Effects, Blood Sugar Level, Allergies. The return rate is 0.1%.
When does demand for agnus castus peak?
Demand peaks in Feb–Mar; the busiest month runs 2.5× the quietest.
What does it cost to enter the agnus castus niche?
Listings span £5.33–£25.23; the average listing price is £11.33 (sweet spot $15–$100). The average incumbent carries 246 reviews — the moat a new listing must climb.