Liquid Vitamin D
Worth a lookShows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$21.19avg listing price — sweet spot $15–$100
Conversion
Great7.3%search→purchase rate — share of searches ending in a sale
Market size
Good$662K$662K/yr · 428K searches
Price range
Good$6.29–$33.00cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good68%top-5 brand share — brands hold most of the demand
Competition
Okay59%top-5 click share — leaders hold, buyers still browse
Review moat
Okay2,144.04avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-8.1%90-day search growth — must beat 0% to launch
Is liquid vitamin d profitable on Amazon?
According to Flapen's Amazon United States niche tracking, liquid vitamin d is a $662K/yr Amazon United States market (428K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in Jan. Verdict: Worth a look — 56/100.
Data updated Aug 5, 2026 · scored weekly · How we score niches
liquid vitamin d market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 30K–40K
- avg 1,000–1,250/product
- Revenue / yr
- $636K–$848K
- units × avg price
- Conversion rate
- 7.3%
- Avg BSR
- #265
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 87%
- Out of stock
- 1.0%
- Avg brand age
- 86 months
- Avg seller age
- 160 days
Competition: brands, sellers & click share
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.Brands
19 falling
Sellers
56
Top-5 brand share
68%
Top 20: 100%
Top-5 click share
59%
Top 20: 96%
Open market
28%
- NOW Foods24%
- NUSAVA15%
- MARYRUTH'S14%
- THORNE9%
- NUTRAHARMONY5%
- Carlyle4%
liquid vitamin d demand & seasonality
Weekly Amazon search volume, last 102 weeks — -8.1% search growth over the last 90 days.Peak months: Jan · busiest ÷ quietest = 1.8×
Top liquid vitamin d search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- liquid vitamin d130K/yr
- vitamin d liquid66K/yr
- vitamin d3 liquid26K/yr
- vitamin d drops adult30K/yr
- vitamin d liquid drops20K/yr
- vitamin d3 drops24K/yr
- liquid vitamin d323K/yr
- vitamin d oil19K/yr
- liquid d314K/yr
- d3 drops11K/yr
Top liquid vitamin d 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.
All 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
NOW Foods Supplements Liquid Vitamin D-3 Strong Bones* Structural Support* 2-Ounce
NOW Foods$6.294.5★4,753 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
MARYRUTHS Megadose Vitamin D3 Drops Vitamin D 4000 IU Vegan 30 Servings
MARYRUTH'S$22.564.6★1,897 rev
Vitamin D3 K2 USDA Organic Drops - Vitamin D3 10000 IU & K2 120mcg - 2 OZ
NUTRAHARMONY$19.174.7★1,312 rev
THORNE Vitamin D3 Liquid 4 000 IU with Precision Dropper 30 Servings
THORNE$23.534.6★84 rev
Newest
by launch dateTHORNE Vitamin D3 Liquid 4 000 IU with Precision Dropper 30 Servings
THORNE$23.5384 rev
Dr. Berg Maximum Strength Vitamin D3 K2 Liquid Drops with MCT Oil 5 000 IU Liquid Vitamin D3 with K2 Supports Strong Bones Heart Energy Immunity and Overall Vitality* - Unflavored 1 Fl Oz
Dr. Berg Nutritionals$21.97592 rev
Vitamin D3 K2 USDA Organic Drops - Vitamin D3 10000 IU & K2 120mcg - 2 OZ
NUTRAHARMONY$19.171,312 rev
5-in-1 Vitamin D3 K2 Drops Vitamin D3 10400 IU & K2(MK-7) 200mcg
Venture Pal$15.84514 rev
Liquid Vitamin D3 10000 IU - USDA Organic Vitamin D Drops for Adults & Kids
IQ BIOLOGY$20.25107 rev
Trending
90-day click momentumLiquid Vitamin D3 10000 IU - USDA Organic Vitamin D Drops for Adults & Kids
IQ BIOLOGY$20.254.5★
THORNE Vitamin D3 Liquid 4 000 IU with Precision Dropper 30 Servings
THORNE$23.534.6★
Natures Truth Vitamin D3 Liquid | 5000 IU | 2 fl oz | Non-GMO and Gluten Free Supplement
Nature's Truth$7.334.6★
NOW Foods Supplements Liquid Vitamin D-3 Strong Bones* Structural Support* 2-Ounce
NOW Foods$6.294.5★
Dr. Berg Maximum Strength Vitamin D3 K2 Liquid Drops with MCT Oil 5 000 IU Liquid Vitamin D3 with K2 Supports Strong Bones Heart Energy Immunity and Overall Vitality* - Unflavored 1 Fl Oz
Dr. Berg Nutritionals$21.974.8★
What reviews say buyers love and hate about liquid vitamin d
What buyers praise and complain about, mined from review topics.What buyers love
“Healthy vitamin”
“The vial is good quality”
“No weird taste”
“Easy to Take”
“Amazing price”
“It really does work”
“convenient with the dropper for accurate dosing”
“More energy”
“Absorbs well”
“Does the Job”
What buyers complain about
“HORRIBLE TASTE”
“I should not have taken the vitamin”
“exact dosing is difficult”
“Hard to dispense”
“I cant bring myself to use it”
“A little pricey”
“Didn't work”
“not a huge fan of the orange flavor”
“Stomach problems”
“it broke after the 2nd use”
Top return reasons
Common liquid vitamin d questions
- Is liquid vitamin d profitable to sell on Amazon United States?
- The niche generates $662K/yr across 23 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -8.1%. Flapen's verdict: Worth a look (56/100).
- How competitive is the liquid vitamin d niche?
- 19 brands and 56 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 68% of demand.
- What do buyers complain about in liquid vitamin d?
- Top complaints mined from reviews: Taste-Overall, Vitamin, Dosage. The return rate is 0.0%.
- When does demand for liquid vitamin d peak?
- Demand peaks in Jan; the busiest month runs 1.8× the quietest.
- What does it cost to enter the liquid vitamin d niche?
- Listings span $6.29–$33.00; the average listing price is $21.19 (sweet spot $15–$100). The average incumbent carries 2,144 reviews — the moat a new listing must climb.