vitamin d
Skip itA small market ($18K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$19.61avg listing price — sweet spot $15–$100
Price range
Great$6.59–$39.93cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good4.8%search→purchase rate — share of searches ending in a sale
Competition
Good53%top-5 click share — leaders hold, buyers still browse
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Growth
Bad-11.0%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Review moat
Bad19,511.04avg incumbent reviews — the moat a new listing must climb
Market size
Bad$18K$18K/yr · 19K searches
According to Flapen's Amazon Singapore niche tracking, vitamin d is a $18K/yr Amazon Singapore market (19K searches/yr). The top 5 brands hold 83% of demand. Verdict: Skip it — 42/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
vitamin d market data
- Units sold / yr
- 2K–2K
- avg 0–100/product
- Revenue / yr
- $29K–$39K
- units × avg price
- Conversion rate
- 4.8%
- Avg BSR
- #655
- Page quality
- 0%
- Prime
- 72%
- Sponsored
- 24%
- Out of stock
- 8.2%
- Avg brand age
- 105 months
- Avg seller age
- 0 days
Competition & brand share
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.Brands
12 falling
Sellers
26
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
53%
Top 20: 94%
Open market
12%
- Now Foods49%
- NatureWise12%
- THORNE8%
- Nature's Bounty8%
- Nature Made6%
- Doctor's Best5%
- Open — no brand owns it (6 brands, 12%)
Demand
Weekly Amazon search volume, last 47 weeks — -11.0% search growth over the last 90 days.Top vitamin d 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Now Foods Supplements Vitamin D3 5000 IU High Potency Structural Support Softgels 240 Count
Now Foods$17.184.8★40,802 rev
NatureWise Vitamin D3 5000iu (125 mcg) 1 Year Supply for Healthy Muscle Function and Immune Support Non-GMO Gluten Free in Cold-Pressed Olive Oil Packaging Vary (Mini Softgel) 360 Count
NatureWise$20.604.8★139,663 rev
NOW Foods Supplements Vitamin D-3 2 000 IU High Potency Structural Support 240 Softgels
Now Foods$13.674.8★20,588 rev
Now Foods Vitamin D-3 1000 IU Softgels 180ct
Now Foods$8.314.8★4,752 rev
Nature Made Vitamin D3 1000 IU (25 mcg) Dietary Supplement for Bone Teeth Muscle and Immune Health Support 300 Softgels 300 Day Supply
Nature Made$20.564.8★46,224 rev
Newest
by launch date
Thorne Vitamin D Liquid - Vitamin D Supplement - Supports Healthy Bones and Muscles Cardiovascular Health and Immune Function* - 1 Fl Oz (30 ml)- 600 Servings
THORNE$31.141,010 rev
Swanson Vitamin D3 - Highest Potency 5 000 Iu (125 mcg) 250 Sgels Bone Immune Cardiovascular Calcium Absorption Mood Muscle and Metabolic Health
Swanson$16.111,702 rev
Thorne Vitamin D-1000 - Vitamin D3 Supplement - 1 000 IU - Support Healthy Bones Teeth Muscles Cardiovascular and Immune Function - Gluten-Free Dairy-Free Soy-Free - 90 Capsules
THORNE$29.973,397 rev
Ultiboost Vitamin D3 1000Iu Capsule (Support Strong Healthy Bones) 60S
Swisse$21.621 rev
Blackmores Sunny D 1000 Gold Capsules 60s
Blackmores$20.002 rev
Trending
90-day click momentum
Natures Bounty Vitamin D3 Immune Support 125 mcg (5000iu) Rapid Release Softgels 240 Ct
Nature's Bounty$22.044.8★
Now Foods Supplements Vitamin D3 5000 IU High Potency Structural Support Softgels 240 Count
Now Foods$17.184.8★
Solgar Vitamin D3 Cholecalciferol 250 MCG 10000 IU Softgels Helps Maintain Healthy Bones Teeth Immune System Support Non GMO Gluten Free Dairy Free Servings 180 Count
Solgar$22.834.8★
GNC 1000 IU Vitamin D3 180 Tablets
GNC$35.414.6★
NOW Supplements Vitamin D-3 50 000 IU Softgels 50 softgels
Now Foods$18.464.8★
What buyers say about vitamin d
What buyers praise and complain about, mined from review topics.What buyers love
“Good supplement”
“Big Brand in Dietary supplement market”
“Offering excellent value”
“easy to swallow”
“making them convenient for everyday use”
Top return reasons
Common questions
- Is vitamin d profitable to sell on Amazon Singapore?
- The niche generates $18K/yr across 25 tracked products. 90-day search growth is -11.0%. Flapen's verdict: Skip it (42/100).
- How competitive is the vitamin d niche?
- 12 brands and 26 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 83% of demand.
- What does it cost to enter the vitamin d niche?
- Listings span $6.59–$39.93; the average listing price is $19.61 (sweet spot $15–$100). The average incumbent carries 19,511 reviews — the moat a new listing must climb.