vitamin c and d
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Great9.1%search→purchase rate — share of searches ending in a sale
Avg price
Great$16.50avg listing price — sweet spot $15–$100
Price range
Good$9.89–$26.99cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$479K$479K/yr · 319K searches
Review moat
Okay2,821.8avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Growth
Bad-27.0%90-day search growth — must beat 0% to launch
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, vitamin c and d is a $479K/yr Amazon United States market (319K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan. Verdict: Skip it — 40/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
vitamin c and d market data
- Units sold / yr
- 30K–40K
- avg 3,000–4,000/product
- Revenue / yr
- $495K–$660K
- units × avg price
- Conversion rate
- 9.1%
- Avg BSR
- #121
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 20%
- Out of stock
- 0.0%
- Avg brand age
- 82 months
- Avg seller age
- 150 days
Competition & brand share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 falling
Sellers
57
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- Nature Made83%
- NOW Foods8%
- NutriBiotic7%
- Super C3%
Demand & seasonality
Weekly Amazon search volume, last 99 weeks — -27.0% search growth over the last 90 days.Peak months: Jan · busiest ÷ quietest = 4.0×
Top vitamin c and d search terms
- super c91K/yr
- superc64K/yr
- vitamin c and d24K/yr
- super c vitamins with vit d3 and zinc18K/yr
- nature made super c17K/yr
- nature made super c with vitamin d3 and zinc12K/yr
- super c vitamin14K/yr
- vitamin d and c11K/yr
- vitamin c with d5K/yr
- vitamin c d zinc10K/yr
Top vitamin c and 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 5 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nature Made Super C Tablets with Vitamin D3 and Zinc 60 Tablets
Nature Made$12.504.8★8,734 rev
Nature Made Super C with Vitamin D3 and Zinc 200 Tablets Bundle with a Pill Oragnizer (2 Items)
Nature Made$26.994.7★250 rev
Now Supplements C-1000 Zinc & D-3 Seasonal Immune Support* 100 Veg Capsules
NOW Foods$10.794.7★605 rev
NutriBiotic Vitamin C + Vitamin D3 & Zinc 250 Capsules | Potent Comprehensive Immune Support | Essential & Antioxidant Daily Supplement | Gluten & GMO Free
NutriBiotic$22.344.7★3,946 rev
Singles To Go! Super C Water Drink Mix Variety Pack 3 Flavors 30 Packets
Super C$9.894.5★574 rev
Newest
by launch dateNature Made Super C with Vitamin D3 and Zinc 200 Tablets Bundle with a Pill Oragnizer (2 Items)
Nature Made$26.99250 rev
Now Supplements C-1000 Zinc & D-3 Seasonal Immune Support* 100 Veg Capsules
NOW Foods$10.79605 rev
Singles To Go! Super C Water Drink Mix Variety Pack 3 Flavors 30 Packets
Super C$9.89574 rev
NutriBiotic Vitamin C + Vitamin D3 & Zinc 250 Capsules | Potent Comprehensive Immune Support | Essential & Antioxidant Daily Supplement | Gluten & GMO Free
NutriBiotic$22.343,946 rev
Nature Made Super C Tablets with Vitamin D3 and Zinc 60 Tablets
Nature Made$12.508,734 rev
Trending
90-day click momentumNature Made Super C with Vitamin D3 and Zinc 200 Tablets Bundle with a Pill Oragnizer (2 Items)
Nature Made$26.994.7★
NutriBiotic Vitamin C + Vitamin D3 & Zinc 250 Capsules | Potent Comprehensive Immune Support | Essential & Antioxidant Daily Supplement | Gluten & GMO Free
NutriBiotic$22.344.7★
Now Supplements C-1000 Zinc & D-3 Seasonal Immune Support* 100 Veg Capsules
NOW Foods$10.794.7★
Nature Made Super C Tablets with Vitamin D3 and Zinc 60 Tablets
Nature Made$12.504.8★
Singles To Go! Super C Water Drink Mix Variety Pack 3 Flavors 30 Packets
Super C$9.894.5★
What buyers say about vitamin c and d
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent vitamin”
“Good quality”
“Essential for Immune System Support”
“Good price”
“Plus doesnt have the yuck aftertaste that the brand name has”
“Easy”
“Hey it has a great flavor”
“This has great flavor, dissovles easily and quickly in water”
“Its got a powerful combination of essential nutrients for daily needs”
“Does the job”
What buyers complain about
“False advertisement, do not waste your money on this”
“What if I don't like the orange as much as the others”
“is artificially flavored”
“Over-sweet :”
“I am not so easy to catch a cold”
“instead a crap sugar product”
“With this and allergy meds I don't get it anymore”
“Sugar content not necessary nutritionaly or healthy item”
“The pills are HUGE”
“These don't have any taste”
Top return reasons
Common questions
- Is vitamin c and d profitable to sell on Amazon United States?
- The niche generates $479K/yr across 5 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -27.0%. Flapen's verdict: Skip it (40/100).
- How competitive is the vitamin c and d niche?
- 4 brands and 57 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in vitamin c and d?
- Top complaints mined from reviews: Advertised Vs Actual Product, Color, Flavor. The return rate is 0.0%.
- When does demand for vitamin c and d peak?
- Demand peaks in Jan; the busiest month runs 4.0× the quietest.
- What does it cost to enter the vitamin c and d niche?
- Listings span $9.89–$26.99; the average listing price is $16.50 (sweet spot $15–$100). The average incumbent carries 2,822 reviews — the moat a new listing must climb.