---
title: "Vitamin C and D — $479K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/vitamin-c-and-d"
last_updated: "2026-08-10T15:31:30.267Z"
locale: en
meta:
description: "Niche score 40/100 · $479K/yr market · 319K searches/yr · $16.50 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 40/100 · $479K/yr market · 319K searches/yr · $16.50 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Vitamin C and D — $479K/yr Amazon US Niche (2026) - Flapen"
---
# **vitamin c and d**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 59Growth 11Conversion 83Competition 0Returns 100Price range 70Avg price 79Brand share 0Review moat 37Quality gap 20
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****9.1%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$16.50**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$9.89–$26.99**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$479K**
$479K/yr · 319K searches
**Review moat**
**Okay****2,821.8**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-27.0%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
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 ~~](https://flapen.com/research/methodology)
## **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.
9K7KSpike '25Prime Day '25Black Friday '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Jan · busiest ÷ quietest = 4.0×
[**Open Trend **](https://flapen.com/research/us/health-household/vitamin-c-and-d/trend)
## **Top vitamin c and d search terms**
- **super c**91K/yr-17.4%8.2% conv. - **superc**64K/yr-54.8%0.1% conv. - **vitamin c and d**24K/yr-17.9%4.1% conv. - **super c vitamins with vit d3 and zinc**18K/yr-25.5%16.3% conv. - **nature made super c**17K/yr-5.0%15.3% conv. - **nature made super c with vitamin d3 and zinc**12K/yr-17.1%18.1% conv. - **super c vitamin**14K/yr+4.2%12.3% conv. - **vitamin d and c**11K/yr-17.2%3.0% conv. - **vitamin c with d**5K/yr+63.2%1.2% conv. - **vitamin c d zinc**10K/yr-20.4%6.9% conv. [**All search terms **](https://flapen.com/research/us/health-household/vitamin-c-and-d/search-terms)
## **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.
0%15%$72K30%$144K45%$216K60%$288K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 5 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nature Made Super C Tablets with Vitamin D3 and Zinc 60 Tablets**Nature Made**$12.50**4.8★8,734 rev](https://www.amazon.com/dp/B07Q3SWL3X) [2**Nature Made Super C with Vitamin D3 and Zinc 200 Tablets Bundle with a Pill Oragnizer (2 Items)**Nature Made**$26.99**4.7★250 rev](https://www.amazon.com/dp/B0FT1LM5YG) [3**Now Supplements C-1000 Zinc & D-3 Seasonal Immune Support* 100 Veg Capsules**NOW Foods**$10.79**4.7★605 rev](https://www.amazon.com/dp/B0BV8887DB) [4**NutriBiotic Vitamin C + Vitamin D3 & Zinc 250 Capsules | Potent Comprehensive Immune Support | Essential & Antioxidant Daily Supplement | Gluten & GMO Free**NutriBiotic**$22.34**4.7★3,946 rev](https://www.amazon.com/dp/B08PQCCDPJ) [5**Singles To Go! Super C Water Drink Mix Variety Pack 3 Flavors 30 Packets**Super C**$9.89**4.5★574 rev](https://www.amazon.com/dp/B0BFBVPY7Q)
### **Newest**
by launch date
[**Nature Made Super C with Vitamin D3 and Zinc 200 Tablets Bundle with a Pill Oragnizer (2 Items)**Nature Made**$26.99**250 rev11mo ago](https://www.amazon.com/dp/B0FT1LM5YG) [**Now Supplements C-1000 Zinc & D-3 Seasonal Immune Support* 100 Veg Capsules**NOW Foods**$10.79**605 rev3y ago](https://www.amazon.com/dp/B0BV8887DB) [**Singles To Go! Super C Water Drink Mix Variety Pack 3 Flavors 30 Packets**Super C**$9.89**574 rev3y ago](https://www.amazon.com/dp/B0BFBVPY7Q) [**NutriBiotic Vitamin C + Vitamin D3 & Zinc 250 Capsules | Potent Comprehensive Immune Support | Essential & Antioxidant Daily Supplement | Gluten & GMO Free**NutriBiotic**$22.34**3,946 rev5y ago](https://www.amazon.com/dp/B08PQCCDPJ) [**Nature Made Super C Tablets with Vitamin D3 and Zinc 60 Tablets**Nature Made**$12.50**8,734 rev7y ago](https://www.amazon.com/dp/B07Q3SWL3X)
### **Trending**
90-day click momentum
[**Nature Made Super C with Vitamin D3 and Zinc 200 Tablets Bundle with a Pill Oragnizer (2 Items)**Nature Made**$26.99**4.7★**▲ 20%**](https://www.amazon.com/dp/B0FT1LM5YG) [**NutriBiotic Vitamin C + Vitamin D3 & Zinc 250 Capsules | Potent Comprehensive Immune Support | Essential & Antioxidant Daily Supplement | Gluten & GMO Free**NutriBiotic**$22.34**4.7★**— 1%**](https://www.amazon.com/dp/B08PQCCDPJ) [**Now Supplements C-1000 Zinc & D-3 Seasonal Immune Support* 100 Veg Capsules**NOW Foods**$10.79**4.7★**— 6%**](https://www.amazon.com/dp/B0BV8887DB) [**Nature Made Super C Tablets with Vitamin D3 and Zinc 60 Tablets**Nature Made**$12.50**4.8★**— 7%**](https://www.amazon.com/dp/B07Q3SWL3X) [**Singles To Go! Super C Water Drink Mix Variety Pack 3 Flavors 30 Packets**Super C**$9.89**4.5★**▼ 39%**](https://www.amazon.com/dp/B0BFBVPY7Q)
## **What buyers say about vitamin c and d**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Vitamin**19%
*“Excellent vitamin”*
**Quality-Overall**17%
*“Good quality”*
**Immunity Booster**12%
*“Essential for Immune System Support”*
**Value For Money**11%
*“Good price”*
**Taste-Overall**8%
*“Plus doesnt have the yuck aftertaste that the brand name has”*
**Ease Of Use**4%
*“Easy”*
**Flavor**4%
*“Hey it has a great flavor”*
**Solubility**2%
*“This has great flavor, dissovles easily and quickly in water”*
**Nutritional Content**2%
*“Its got a powerful combination of essential nutrients for daily needs”*
**Advertised Vs Actual Product**2%
*“Does the job”*
### **What buyers complain about **
**Advertised Vs Actual Product**13%
*“False advertisement, do not waste your money on this”*
**Color**10%
*“What if I don't like the orange as much as the others”*
**Flavor**7%
*“is artificially flavored”*
**Sweetness**7%
*“Over-sweet :”*
**Cold Relief**6%
*“I am not so easy to catch a cold”*
**Ingredients-Overall**6%
*“instead a crap sugar product”*
**Allergies**4%
*“With this and allergy meds I don't get it anymore”*
**Nutritional Content**4%
*“Sugar content not necessary nutritionaly or healthy item”*
**Size-Overall**3%
*“The pills are HUGE”*
**Taste-Overall**3%
*“These don't have any taste”*
### **Top return reasons **
**Size-Overall**100%
## **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.
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