---
title: "Liquid Vitamin D3 with K2 — Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/liquid-vitamin-d3-with-k2"
last_updated: "2026-08-12T16:15:06.442Z"
locale: en
meta:
description: "Amazon product research for liquid vitamin d3 with k2: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for liquid vitamin d3 with k2: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Liquid Vitamin D3 with K2 — Amazon US Product Research"
---
# **Liquid Vitamin D3 with K2**
**Worth a look**
Shows low returns (0.0%), but brand-locked demand (top 5 brands take 97% of clicks) keeps it on the watch list.
Market size 84Growth 30Conversion 86Competition 10Returns 100Price range 95Avg price 95Brand share 8Review moat 21Quality gap 19
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$26.61**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$19.17–$34.10**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****9.7%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Great****$1.4M**
$1.4M/yr · 540K searches
**Growth**
**Okay****+4.4%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****11,597.38**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****88%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****97%**
top-5 brand share — brand-locked demand
## **Is liquid vitamin d3 with k2 profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, liquid vitamin d3 with k2 is a $1.4M/yr Amazon United States market (540K searches/yr). The top 5 brands hold 97% of demand. Verdict: Worth a look — 51/100.
Data updated Aug 5, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **liquid vitamin d3 with k2 market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **50K–60K**
- avg 5,000–6,000/product
- **Revenue / yr**
- **$1.3M–$1.6M**
- units × avg price
- **Conversion rate**
- **9.7%**
- **Avg BSR**
- **#43**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **8.5%**
- **Avg brand age**
- **61 months**
- **Avg seller age**
- **149 days**
## **Competition: brands, sellers & click share**
The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **▼falling
**Sellers**
**21**
**Top-5 brand share**
**97%**
Top 20: 100%
**Top-5 click share**
**88%**
Top 20: 100%
**Open market**
**0%**
- THORNE64% - NUSAVA14% - Sports Research7% - Pure Encapsulations7% - AG16% - NUTRAHARMONY3%
## **liquid vitamin d3 with k2 demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +4.4% search growth over the last 90 days.
13K8KSpike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/health-household/liquid-vitamin-d3-with-k2/trend)
## **Top liquid vitamin d3 with k2 search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **thorne vitamin d3 k2**114K/yr+3.0%11.3% conv. - **thorne d3 k2**69K/yr+11.5%10.9% conv. - **liquid vitamin d3 with k2**57K/yr-3.5%3.2% conv. - **vitamin d3 k2 drops**56K/yr-12.3%3.5% conv. - **d3 k2 drops**40K/yr-14.1%3.6% conv. - **vitamin d3 k2 liquid**24K/yr-4.4%3.4% conv. - **vitamin d3 k2 liquid drops**31K/yr-10.1%3.8% conv. - **vitamin d3 k2 thorne**19K/yr+9.2%7.7% conv. - **nusava d3 k2 omega 3 mct oil**8K/yr+192.1%7.3% conv. - **thorne vitamin d k2**15K/yr+8.1%11.6% conv. [**All search terms **](https://flapen.com/research/us/health-household/liquid-vitamin-d3-with-k2/search-terms)
## **Top liquid vitamin d3 with k2 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.
0%15%$209K30%$419K45%$628K60%$837K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Thorne Vitamin D + K2 Liquid with a Metered Dispenser 600 Servings**THORNE**$33.00**4.4★6,679 rev](https://www.amazon.com/dp/B0038NF8MG) [2**(2 Pack) Organic Vitamin D3 K2 Drops with MCT Oil & Omega 3 - Liquid Vitamin D3 5000 IU - K2 D3 Vitamin Supplement - Vitamin D Drops for Women & Men - No Fillers Non-GMO GMP Unflavored (2 Fl Oz)**NUSAVA**$26.39**4.5★13,741 rev](https://www.amazon.com/dp/B08CY92YHP) [3**THORNE Vitamin D-5 000 Vitamin D3 Supplement 5 000 IU 60 Capsules**THORNE**$19.45**4.8★9,397 rev](https://www.amazon.com/dp/B0797HQFGT) [4**Sports Research Vegan Vitamin D3 + K2 w/Coconut Oil 60 Count Plantgels**Sports Research**$22.12**4.8★54,253 rev](https://www.amazon.com/dp/B07255MPRN) [5**Pure Encapsulations Vitamin D3 & K2 120 Capsules**Pure Encapsulations**$34.10**4.8★5,090 rev](https://www.amazon.com/dp/B0BZ8TMDQ5)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Vitamin D3 K2 USDA Organic Drops - Vitamin D3 10000 IU & K2 120mcg - 2 OZ**NUTRAHARMONY**$19.17**1,312 rev1y ago](https://www.amazon.com/dp/B0DNNFTK92) [**AG1 Vitamin D3 + K2 Liquid Drops | Vitamin D & K Blend | Daily Bone Support**AG1**$28.63**508 rev2y ago](https://www.amazon.com/dp/B0CPBL4538) [**Pure Encapsulations Vitamin D3 & K2 120 Capsules**Pure Encapsulations**$34.10**5,090 rev3y ago](https://www.amazon.com/dp/B0BZ8TMDQ5) [**(2 Pack) Organic Vitamin D3 K2 Drops with MCT Oil & Omega 3 - Liquid Vitamin D3 5000 IU - K2 D3 Vitamin Supplement - Vitamin D Drops for Women & Men - No Fillers Non-GMO GMP Unflavored (2 Fl Oz)**NUSAVA**$26.39**13,741 rev6y ago](https://www.amazon.com/dp/B08CY92YHP) [**THORNE Vitamin K Vitamins K1 and K2 (as MK-4 and MK-7) 60 Capsules**THORNE**$29.99**1,799 rev8y ago](https://www.amazon.com/dp/B0797N3F9T)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Sports Research Vegan Vitamin D3 + K2 w/Coconut Oil 60 Count Plantgels**Sports Research**$22.12**4.8★**▲ 35%**](https://www.amazon.com/dp/B07255MPRN) [**THORNE Vitamin K Vitamins K1 and K2 (as MK-4 and MK-7) 60 Capsules**THORNE**$29.99**4.8★**— 10%**](https://www.amazon.com/dp/B0797N3F9T) [**Thorne Vitamin D + K2 Liquid with a Metered Dispenser 600 Servings**THORNE**$33.00**4.4★**— 2%**](https://www.amazon.com/dp/B0038NF8MG) [**Pure Encapsulations Vitamin D3 & K2 120 Capsules**Pure Encapsulations**$34.10**4.8★**— 1%**](https://www.amazon.com/dp/B0BZ8TMDQ5) [**AG1 Vitamin D3 + K2 Liquid Drops | Vitamin D & K Blend | Daily Bone Support**AG1**$28.63**4.7★**— 2%**](https://www.amazon.com/dp/B0CPBL4538)
**~~View all trending →~~**
## **What reviews say buyers love and hate about liquid vitamin d3 with k2**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**23%
*“Great quality & easy to take”*
**Vitamin**22%
*“Best vitamins”*
**Taste-Overall**5%
*“Good taste”*
**Ease Of Use**5%
*“Easy to use”*
**Value For Money**4%
*“Not expensive”*
**Ease Of Chewing/Swallowing**4%
*“Easy to swallow”*
**Advertised Vs Actual Product**3%
*“As advertised”*
**Energy Level**3%
*“Great boost of energy”*
**Efficiency**3%
*“Works well”*
**Dosage**2%
*“is the perfect dosage”*
### **What buyers complain about **
**Taste-Overall**13%
*“Strong fish taste”*
**Vitamin**12%
*“no taste to the vitamin”*
**Dosage**6%
*“exact dosing is difficult”*
**Value For Money**5%
*“Too expensive”*
**Dispensing Mechanism**4%
*“Hard to dispense”*
**Ease Of Use**4%
*“The dropper is very hard to use”*
**Side Effects**3%
*“Caused terrible diarrhea and headaches”*
**Size-Overall**3%
*“Small gel capsule”*
**Allergies**2%
*“I thought I was allergic to something else”*
**Functionality-Overall**2%
*“Didn't work”*
### **Top return reasons **
**Value For Money**41%
**Dosage**14%
**Leak-Proof**8%
**Vitamin**7%
**Dilute/Watery**5%
**Color**3%
**Comfort-Overall**3%
**Joint Pain**3%
**Quality-Overall**3%
**Ingredients-Overall**3%
## **Common liquid vitamin d3 with k2 questions**
- **Is liquid vitamin d3 with k2 profitable to sell on Amazon United States?**
- The niche generates $1.4M/yr across 8 tracked products. 90-day search growth is +4.4%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the liquid vitamin d3 with k2 niche?**
- 6 brands and 21 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 97% of demand.
- **What do buyers complain about in liquid vitamin d3 with k2?**
- Top complaints mined from reviews: Taste-Overall, Vitamin, Dosage. The return rate is 0.0%.
- **When does demand for liquid vitamin d3 with k2 peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the liquid vitamin d3 with k2 niche?**
- Listings span $19.17–$34.10; the average listing price is $26.61 (sweet spot $15–$100). The average incumbent carries 11,597 reviews — the moat a new listing must climb.
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