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.

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.

Returns

Incredible0.0%

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

Great9.7%

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

Bad11,597.38

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad88%

top-5 click share — a locked-up shelf

Brand share

Bad97%

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

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

Top-5 brand share

97%

Top 20: 100%

Top-5 click share

88%

Top 20: 100%

Open market

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.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open 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 k2114K/yr +3.0%11.3% conv.
thorne d3 k269K/yr +11.5%10.9% conv.
liquid vitamin d3 with k257K/yr -3.5%3.2% conv.
vitamin d3 k2 drops56K/yr -12.3%3.5% conv.
d3 k2 drops40K/yr -14.1%3.6% conv.
vitamin d3 k2 liquid24K/yr -4.4%3.4% conv.
vitamin d3 k2 liquid drops31K/yr -10.1%3.8% conv.
vitamin d3 k2 thorne19K/yr +9.2%7.7% conv.
nusava d3 k2 omega 3 mct oil8K/yr +192.1%7.3% conv.
thorne vitamin d k215K/yr +8.1%11.6% conv.

All 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.

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

Thorne Vitamin D + K2 Liquid with a Metered Dispenser 600 Servings

THORNE$33.004.4★6,679 rev

(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$26.394.5★13,741 rev

THORNE Vitamin D-5 000 Vitamin D3 Supplement 5 000 IU 60 Capsules

THORNE$19.454.8★9,397 rev

Sports Research Vegan Vitamin D3 + K2 w/Coconut Oil 60 Count Plantgels

Sports Research$22.124.8★54,253 rev

Pure Encapsulations Vitamin D3 & K2 120 Capsules

Pure Encapsulations$34.104.8★5,090 rev

Newest

by launch date

Vitamin D3 K2 USDA Organic Drops - Vitamin D3 10000 IU & K2 120mcg - 2 OZ

NUTRAHARMONY$19.171,312 rev

1y ago

AG1 Vitamin D3 + K2 Liquid Drops | Vitamin D & K Blend | Daily Bone Support

AG1$28.63508 rev

2y ago

Pure Encapsulations Vitamin D3 & K2 120 Capsules

Pure Encapsulations$34.105,090 rev

3y ago

(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$26.3913,741 rev

6y ago

THORNE Vitamin K Vitamins K1 and K2 (as MK-4 and MK-7) 60 Capsules

THORNE$29.991,799 rev

8y ago

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-Overall23%

“Great quality & easy to take”

Vitamin22%

“Best vitamins”

Taste-Overall5%

“Good taste”

Ease Of Use5%

“Easy to use”

Value For Money4%

“Not expensive”

Ease Of Chewing/Swallowing4%

“Easy to swallow”

Advertised Vs Actual Product3%

“As advertised”

Energy Level3%

“Great boost of energy”

Efficiency3%

“Works well”

Dosage2%

“is the perfect dosage”

What buyers complain about

Taste-Overall13%

“Strong fish taste”

Vitamin12%

“no taste to the vitamin”

Dosage6%

“exact dosing is difficult”

Value For Money5%

“Too expensive”

Dispensing Mechanism4%

“Hard to dispense”

Ease Of Use4%

“The dropper is very hard to use”

Side Effects3%

“Caused terrible diarrhea and headaches”

Size-Overall3%

“Small gel capsule”

Allergies2%

“I thought I was allergic to something else”

Functionality-Overall2%

“Didn't work”

Top return reasons

Value For Money41%

Dosage14%

Leak-Proof8%

Vitamin7%

Dilute/Watery5%

Color3%

Comfort-Overall3%

Joint Pain3%

Quality-Overall3%

Ingredients-Overall3%

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.