vitamin d 800 iu
Skip itA deep review moat (34,072 avg reviews) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Great7.2%search→purchase rate — share of searches ending in a sale
Competition
Good50%top-5 click share — leaders hold, buyers still browse
Brand share
Good72%top-5 brand share — brands hold most of the demand
Price range
Good$4.86–$26.10cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Okay$10.89avg listing price — sweet spot $15–$100
Growth
Okay+6.8%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$45K$45K/yr · 58K searches
Review moat
Bad34,072.29avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, vitamin d 800 iu is a $45K/yr Amazon United States market (58K searches/yr). The top 5 brands hold 72% of demand. Verdict: Skip it — 46/100.
Data updated Aug 5, 2026 · scored weekly · How we score niches
vitamin d 800 iu market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- $54K–$65K
- units × avg price
- Conversion rate
- 7.2%
- Avg BSR
- #294
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 62%
- Out of stock
- 0.0%
- Avg brand age
- 94 months
- Avg seller age
- 157 days
Competition & brand share
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.Brands
12 falling
Sellers
410
Top-5 brand share
72%
Top 20: 100%
Top-5 click share
50%
Top 20: 99%
Open market
21%
- Nature Made30%
- DEVA13%
- NatureWise12%
- NOW Foods10%
- Pure Encapsulations7%
- Nature's Truth7%
Demand & seasonality
Weekly Amazon search volume, last 100 weeks — +6.8% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top vitamin d 800 iu search terms
- vitamin d 800 iu22K/yr
- vitamin d3 800 iu16K/yr
- vitamin d 800 iu for women7K/yr
- vitamin d 800 mg5K/yr
- vitamin d3 800 iu for women5K/yr
- 800 iu vitamin d4K/yr
Top vitamin d 800 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.
All 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nature Made Vitamin D3 1000 IU (25 mcg) 300 Vitamin D Softgels
Nature Made$10.794.8★60,500 rev
NatureWise Vitamin D3 1000IU Supplement Immune Support 360 Mini Softgels
NatureWise$11.664.7★195,696 rev
Nature Made Vitamin D3 1000 IU (25 mcg) 180 Vitamin D Softgels
Nature Made$8.674.8★60,500 rev
NOW Supplements Vitamin D-3 400 IU Strong Bones* Structural support* 180 Softgels
NOW Foods$4.864.7★5,350 rev
Natures Truth Vitamin D3 400 IU 100 Count
Nature's Truth$6.854.7★1,046 rev
Newest
by launch date
Bronson Vitamin D3 1000 IU (25mcg) Low Dose Vitamin D 360 Tablets
Bronson$9.8593 rev
NatureWise Vitamin D3 1000iu (25 mcg) 90-Day Supply for Immune Support Healthy Muscle Function and Bone Health Gluten Free in Organic Extra Virgin Olive Oil (Mini Softgel) 90 Count
NatureWise$8.53195,696 rev
Carlyle Vitamin D3 400iu (10mcg) | 400 Tablets | Value Size
Carlyle$9.19374 rev
Garden of Life Kids Organic Vitamin D3 Gummies with 800 IU (100% Daily Value) for Strong Bones Teeth Brain & Immunity Non-GMO No Gluten Vegetarian Sugar Free Orange Flavor 60 Servings
Garden of Life$11.922,401 rev
Natures Truth Vitamin D3 400 IU 100 Count
Nature's Truth$6.851,046 rev
Trending
90-day click momentumBronson Vitamin D3 1000 IU (25mcg) Low Dose Vitamin D 360 Tablets
Bronson$9.854.7★
Natures Truth Vitamin D3 400 IU 100 Count
Nature's Truth$6.854.7★
Deva Vegan Vitamins Vitamin D 800Iu Vegan 90 Tab
DEVA$8.514.3★
Natural Nutra Vitamin D3 400 IU Softgels Gluten-Free Vitamin D 100 Count
Natural Nutra$15.054.6★
NOW Foods Supplements Vitamin D-3 1 000 IU High Potency Structural Support* 360 Softgels
NOW Foods$9.854.8★
What buyers say about vitamin d 800 iu
What buyers praise and complain about, mined from review topics.What buyers love
“Great vitamin”
“fair price”
“the quality seems consistent”
“accurately described”
“The tablets are easy to swallow or chew”
“Overall, it feels like a reliable and straightforward calcium supplement”
“Dosage is perfect for my age”
“Works well”
“which is convenient”
“It is very useful nutrition”
What buyers complain about
“SO TINY”
“the dose is too little for what most humans need for a daily dose”
“Just a vitamin, nothing note worthy”
“Ingredients contain soybean oil”
“Smelled so bad”
“Not high quality”
“Cant provide results yet”
“The softgels themselves are also not as easy to take as I expected”
“Super sticky/chewy”
“Calcium, Could NOT use, do NOT resend”
Top return reasons
Common questions
- Is vitamin d 800 iu profitable to sell on Amazon United States?
- The niche generates $45K/yr across 21 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +6.8%. Flapen's verdict: Skip it (46/100).
- How competitive is the vitamin d 800 iu niche?
- 12 brands and 410 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 72% of demand.
- What do buyers complain about in vitamin d 800 iu?
- Top complaints mined from reviews: Size-Overall, Dosage, Vitamin. The return rate is 0.0%.
- When does demand for vitamin d 800 iu peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the vitamin d 800 iu niche?
- Listings span $4.86–$26.10; the average listing price is $10.89 (sweet spot $15–$100). The average incumbent carries 34,072 reviews — the moat a new listing must climb.