---
title: "Vitamin D3 10000 Iu — £51K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/vitamin-d3-10000-iu"
last_updated: "2026-08-01T19:18:45.377Z"
locale: en
meta:
description: "Niche score 37/100 · £51K/yr market · 49K searches/yr · £14.01 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 37/100 · £51K/yr market · 49K searches/yr · £14.01 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Vitamin D3 10000 Iu — £51K/yr Amazon UK Niche (2026) - Flapen"
---
# **vitamin d3 10000 iu**
**Skip it**
Soft demand (-45.6% this quarter) — this niche doesn't clear our bar today.
Market size 13Growth 2Conversion 77Competition 27Returns 100Price range 56Avg price 67Brand share 38Review moat 23Quality gap 24
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****7.5%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Good****£14.01**
avg listing price — sweet spot $15–$100
**Price range**
**Good****£3.13–£30.08**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****69%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****6,977.08**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****£51K**
£51K/yr · 49K searches
**Growth**
**Bad****-45.6%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, vitamin d3 10000 iu is a £51K/yr Amazon United Kingdom market (49K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Oct. Verdict: Skip it — 37/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **vitamin d3 10000 iu market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **£42K–£56K**
- units × avg price
- **Conversion rate**
- **7.5%**
- **Avg BSR**
- **#108**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **9.0%**
- **Avg brand age**
- **60 months**
- **Avg seller age**
- **175 days**
## **Competition & brand share**
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▼falling
**Sellers**
**57**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**69%**
Top 20: 100%
**Open market**
**14%**
- Healthy Origins41% - NOW17% - BioImpact9% - Nutrition Geeks9% - Vortexonix7% - NUTRALIE4% - Open — no brand owns it (5 brands, 14%)
## **Demand & seasonality**
Weekly Amazon search volume, last 101 weeks — -45.6% search growth over the last 90 days.
3K2KSpike '24Spike '25 seasonDecMarJunAugNovMarMay
Peak months: Oct · busiest ÷ quietest = 2.3×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/vitamin-d3-10000-iu/trend)
## **Top vitamin d3 10000 iu search terms**
- **vitamin d3 10000 iu**16K/yr-48.1%5.4% conv. - **vitamin d 10000iu**14K/yr-40.3%5.3% conv. - **vitamin d 10000**6K/yr-25.8%7.8% conv. - **vitamin d 10000iu high strength**4K/yr-23.6%5.6% conv. - **d3 10000 iu**3K/yr-41.3%4.2% conv. - **vitamin d3 10000iu**4K/yr-76.5%2.1% conv. - **vit d3 10000iu**2K/yr-69.2%8.0% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/vitamin-d3-10000-iu/search-terms)
## **Top vitamin d3 10000 iu 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%£10K30%£15K40%£21K101001K10K100K Reviews — right = deep review moatMarket 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.
### **Top sellers**
by 90-day click share
[1**Healthy Origins Vitamin D3 Softgels Each with 10 000 IU 120 Softgels Gluten-Free Soy-Free**Healthy Origins**£16.24**4.6★386 rev](https://www.amazon.co.uk/dp/B0BZ4S3B9S) [2**Now Foods Vitamin D3 Depot 10000 IU 1 Capsule Every 10 Days Cholecalciferol from Lanolin 120 Softgels Lab-Tested Gluten Free Soy Free Non GMO**NOW**£15.02**4.6★260 rev](https://www.amazon.co.uk/dp/B0C4FM5XV6) [3**Healthy Origins Vitamin D3 Softgels Each with 10 000 IU 360 Capsules Gluten-Free Soy-Free GMO-Free**Healthy Origins**£26.89**4.7★545 rev](https://www.amazon.co.uk/dp/B09MWG5M1C) [4**BIOIMPACT Vitamin D3 10 000 IU Softgels | High Strength | 401 Easy to Swallow Softgels | More Than Full Year Supply | Supports Immune System & Bone Health | Non-GMO & Gluten-Free | UK Manufactured**BioImpact**£30.08**4.7★87 rev](https://www.amazon.co.uk/dp/B0DJ3MHBV7) [5**Vitamin D3 4000 iu & Vitamin K2 MK7 100g - 1 Year Supply 365 Easy-Swallow Vitamin D3 K2 Tablets 1-A-Day High Strength Vegetarian D3 and K2 Vitamin Supplements UK Made Vitamin D Tablets**Nutrition Geeks**£7.95**4.6★17,521 rev](https://www.amazon.co.uk/dp/B0CR57HRDV)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**120 Count Vitamin D3 K2 Supplement Softgel 2 in 1 Vitamins D & K Complex Vitamin D3 K2 10000 IU Coconut Oil Supplement Softgel Immune Heart Health Support**Vortexonix**£7.60**130 rev1y ago](https://www.amazon.co.uk/dp/B0DPKRNRLW) [**Premium Vitamin D3 & Vitamin K2 (MK-7) 120 Virgin Coconut Oil Softgels 2 in 1 Vitamin D3 K2 Supplement Support Immune Bones & Muscle Health Easy to Swallow and Absorb | Gluten Free**Bibonse**£9.46**96 rev1y ago](https://www.amazon.co.uk/dp/B0DMVZ13Q3) [**BIOIMPACT Vitamin D3 10 000 IU Softgels | High Strength | 401 Easy to Swallow Softgels | More Than Full Year Supply | Supports Immune System & Bone Health | Non-GMO & Gluten-Free | UK Manufactured**BioImpact**£30.08**87 rev1y ago](https://www.amazon.co.uk/dp/B0DJ3MHBV7) [**Premium Vitamin D3 & Vitamin K2 (MK-7) Softgels 120 Count Easy-Swallow VIT D3 K2 with Coconut Oil Gluten Free High Strength Vitamin D3 and K2 Supplements**XAYGHE**£9.14**295 rev1y ago](https://www.amazon.co.uk/dp/B0DDX3MTNX) [**Now Foods Vitamin D3 Depot 10000 IU 1 Capsule Every 10 Days Cholecalciferol from Lanolin 120 Softgels Lab-Tested Gluten Free Soy Free Non GMO**NOW**£15.02**260 rev2y ago](https://www.amazon.co.uk/dp/B0C4FM5XV6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Vitamin D3 and K2 10 000 IU - D3 K2 MK7 with Vitamin C and Extra Virgin Olive Oil - 60 Softgels Vitamin D Complex Nutralie**NUTRALIE**£13.67**4.5★**▲ 139%**](https://www.amazon.co.uk/dp/B0894MF6MX) [**Premium Vitamin D3 & Vitamin K2 (MK-7) 120 Virgin Coconut Oil Softgels 2 in 1 Vitamin D3 K2 Supplement Support Immune Bones & Muscle Health Easy to Swallow and Absorb | Gluten Free**Bibonse**£9.46**4.5★**▲ 44%**](https://www.amazon.co.uk/dp/B0DMVZ13Q3) [**Healthy Origins Vitamin D3 Softgels Each with 10 000 IU 120 Softgels Gluten-Free Soy-Free**Healthy Origins**£16.24**4.6★**▲ 40%**](https://www.amazon.co.uk/dp/B0BZ4S3B9S) [**120 Count Vitamin D3 K2 Supplement Softgel 2 in 1 Vitamins D & K Complex Vitamin D3 K2 10000 IU Coconut Oil Supplement Softgel Immune Heart Health Support**Vortexonix**£7.60**4.4★**▲ 32%**](https://www.amazon.co.uk/dp/B0DPKRNRLW) [**Vitamin D Tablets 1000IU Vitabiotics Ultra**Vitabiotics Ultra**£3.13**4.7★**▲ 27%**](https://www.amazon.co.uk/dp/B003VQZC3U)
**~~View all trending →~~**
## **What buyers say about vitamin d3 10000 iu**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“the capsules feel high quality”*
**Value For Money**17%
*“Good Value”*
**Vitamin**17%
*“Healthy vitamin”*
**Ease Of Chewing/Swallowing**13%
*“easy to consume with meal”*
**Advertised Vs Actual Product**6%
*“As advertised”*
**Ease Of Use**4%
*“Easy and convenient”*
**Energy Level**2%
*“have much more energy”*
**Side Effects**2%
*“dont leave any aftertaste”*
**Immunity Booster**2%
*“Immune system support”*
**Dosage**2%
*“Just the right dosage”*
### **What buyers complain about **
**Dosage**13%
*“it looks as if the dosage is very high”*
**Size-Overall**10%
*“Large capsules”*
**Vitamin**9%
*“Not the right type of Vitamin D for me I guess”*
**Taste-Overall**6%
*“It doesnt have a funny taste”*
**Functionality-Overall**5%
*“Not working”*
**Value For Money**4%
*“Waste of money”*
**Advertised Vs Actual Product**4%
*“Really clever deceptive marketing”*
**Ingredients-Overall**3%
*“Now they are little white chalk tablets”*
**Strength**3%
*“Either too strong or poorly formulated”*
**Quality-Overall**3%
*“Weak Product”*
### **Top return reasons **
**Vitamin**100%
## **Common questions**
- **Is vitamin d3 10000 iu profitable to sell on Amazon United Kingdom?**
- The niche generates £51K/yr across 13 tracked products. 90-day search growth is -45.6%. Flapen's verdict: Skip it (37/100).
- **How competitive is the vitamin d3 10000 iu niche?**
- 11 brands and 57 sellers compete. The top 5 products take 69% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in vitamin d3 10000 iu?**
- Top complaints mined from reviews: Dosage, Size-Overall, Vitamin. The return rate is 0.1%.
- **When does demand for vitamin d3 10000 iu peak?**
- Demand peaks in Oct; the busiest month runs 2.3× the quietest.
- **What does it cost to enter the vitamin d3 10000 iu niche?**
- Listings span £3.13–£30.08; the average listing price is £14.01 (sweet spot $15–$100). The average incumbent carries 6,977 reviews — the moat a new listing must climb.
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