---
title: "Time Release Vitamin C — $371K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/time-release-vitamin-c"
last_updated: "2026-08-10T21:29:14.124Z"
locale: en
meta:
description: "Niche score 46/100 · $371K/yr market · 141K searches/yr · $20.43 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 46/100 · $371K/yr market · 141K searches/yr · $20.43 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Time Release Vitamin C — $371K/yr Amazon US Niche (2026) - Flapen"
---
# **time release vitamin c**
**Skip it**
Brand-locked demand (top 5 brands take 96% of clicks) — this niche doesn't clear our bar today.
Market size 54Growth 22Conversion 96Competition 25Returns 100Price range 69Avg price 89Brand share 11Review moat 23Quality gap 15
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.8%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$20.43**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$6.72–$33.14**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$371K**
$371K/yr · 141K searches
**Competition**
**Bad****70%**
top-5 click share — a locked-up shelf
**Review moat**
**Bad****7,534.56**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-6.0%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.8★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Bad****96%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, time release vitamin c is a $371K/yr Amazon United States market (141K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in Mar. Verdict: Skip it — 46/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **time release vitamin c market data**
- **Units sold / yr**
- **15K–20K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **$306K–$409K**
- units × avg price
- **Conversion rate**
- **12.8%**
- **Avg BSR**
- **#297**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **63%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **114 months**
- **Avg seller age**
- **141 days**
## **Competition & brand share**
The top 5 products capture 70% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▼falling
**Sellers**
**614**
**Top-5 brand share**
**96%**
Top 20: 100%
**Top-5 click share**
**70%**
Top 20: 100%
**Open market**
**2%**
- SOLARAY72% - NOW Foods8% - Purely Holistic6% - Carlyle6% - Nature Made3% - Life Extension2% - Open — no brand owns it (1 brand, 2%)
## **Demand & seasonality**
Weekly Amazon search volume, last 101 weeks — -6.0% search growth over the last 90 days.
6K4KSpike '24Spike '25Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Mar · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/health-household/time-release-vitamin-c/trend)
## **Top time release vitamin c search terms**
- **solaray vitamin c**40K/yr-9.6%15.1% conv. - **time release vitamin c**29K/yr+2.0%5.7% conv. - **vitamin c time release**18K/yr-4.2%4.4% conv. - **solaray vitamin c 1000mg**7K/yr+22.4%21.8% conv. - **time released vitamin c**7K/yr-27.9%8.9% conv. - **vitamin c time release 1000mg capsules**6K/yr-9.6%10.9% conv. - **vitamin c solaray**5K/yr+0.5%16.9% conv. - **slow release vitamin c**4K/yr-14.0%7.8% conv. - **timed release vitamin c**5K/yr-19.0%8.7% conv. - **vitamin c time release 500mg**6K/yr-11.1%5.6% conv. [**All search terms **](https://flapen.com/research/us/health-household/time-release-vitamin-c/search-terms)
## **Top time release vitamin c 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%10%$37K20%$74K30%$111K40%$148K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 16 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**SOLARAY Vitamin C 1000mg - Time Release Vitamin C Capsules w/Rose Hips and Acerola for Bioflavonoid Support - Two-Stage All-Day Immune Support - Vegan 60 Day Guarantee 275 Servings 275 VegCaps**SOLARAY**$33.14**4.8★11,615 rev](https://www.amazon.com/dp/B07JH4R881) [2**SOLARAY Vitamin C 1000mg - Time Release Vitamin C Capsules w/Rose HIPS and Acerola for Bioflavonoid Support - Two-Stage All-Day Immune Support - Vegan 60 Day Guarantee**SOLARAY**$15.44**4.8★11,615 rev](https://www.amazon.com/dp/B005P0MK1M) [3**NOW Foods Supplements Vitamin C-1 000 with Rose Hips Sustained Release Antioxidant Protection* 250 Tablets**NOW Foods**$16.70**4.8★20,217 rev](https://www.amazon.com/dp/B0013P1GD6) [4**Vitamin C 1000mg | Immune Support | Timed-Release Capsules | 1 Year Supply | Vitamin C Supplement with Acerola Cherry & Rose Hips | Daily Antioxidant & Wellness Support | Vegan Non-GMO | 365 Ct**Purely Holistic**$26.86**4.7★2,172 rev](https://www.amazon.com/dp/B0843GPB9L) [5**Carlyle Vitamin C 1000mg | Timed Release | 120 Vegetarian Caplets**Carlyle**$9.97**4.8★1,108 rev](https://www.amazon.com/dp/B097RZ6Q1J)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SOLARAY Super Bio Vitamin C 1000mg Buffered Time Release Capsules with Bioflavonoids Two-Stage for High Absorption and All Day Immune Support Vegan 60 Day Guarantee 140 Servings 280 VegCaps**SOLARAY**$26.04**2,701 rev3y ago](https://www.amazon.com/dp/B0BQTCVBSN) [**Life Extension Vitamin C 24-Hour Liposomal Hydrogel Formula absorbs Better Than Standard Vitamin C up to 24 Hours get The Most Out of Your Vitamin C Gluten-Free Non-GMO Vegetarian 60 Tablets**Life Extension**$21.23**520 rev4y ago](https://www.amazon.com/dp/B09GW7PCFZ) [**Carlyle Vitamin C 1000mg | Timed Release | 120 Vegetarian Caplets**Carlyle**$9.97**1,108 rev5y ago](https://www.amazon.com/dp/B097RZ6Q1J) [**Vitamin C 1000mg | Immune Support | Timed-Release Capsules | 1 Year Supply | Vitamin C Supplement with Acerola Cherry & Rose Hips | Daily Antioxidant & Wellness Support | Vegan Non-GMO | 365 Ct**Purely Holistic**$26.86**2,172 rev6y ago](https://www.amazon.com/dp/B0843GPB9L) [**SOLARAY Vitamin C 1000mg - Time Release Vitamin C Capsules w/Rose Hips and Acerola for Bioflavonoid Support - Two-Stage All-Day Immune Support - Vegan 60 Day Guarantee 275 Servings 275 VegCaps**SOLARAY**$33.14**11,615 rev7y ago](https://www.amazon.com/dp/B07JH4R881)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**NOW Foods Supplements Vitamin C-1 000 with Rose Hips Sustained Release Antioxidant Protection* 100 Tablets**NOW Foods**$8.38**4.8★**▲ 179%**](https://www.amazon.com/dp/B000ZL3OFW) [**SOLARAY Vitamin C w/Rose Hips & Acerola | 1000mg | Two-Stage Timed-Release Healthy Immune Function Skin Hair & Nails Support | Non-GMO | 250ct**SOLARAY**$29.21**4.7★**▲ 82%**](https://www.amazon.com/dp/B0081CLEO0) [**SOLARAY Vitamin C 1000mg with Bioflavonoids Concentrate - Vitamin C Capsules with Rose HIPS and Acerola Cherry - Antioxidant Heart Health and Immune Support Supplement Vegan Non-GMO 250 Servings**SOLARAY**$27.85**4.8★**▲ 42%**](https://www.amazon.com/dp/B006H9RESE) [**SOLARAY Vitamin C 1000mg - Time Release Vitamin C Capsules w/Rose HIPS and Acerola for Bioflavonoid Support - Two-Stage All-Day Immune Support - Vegan 60 Day Guarantee**SOLARAY**$15.44**4.8★**▲ 30%**](https://www.amazon.com/dp/B005P0MK1M) [**Life Extension Vitamin C 24-Hour Liposomal Hydrogel Formula absorbs Better Than Standard Vitamin C up to 24 Hours get The Most Out of Your Vitamin C Gluten-Free Non-GMO Vegetarian 60 Tablets**Life Extension**$21.23**4.8★**▲ 21%**](https://www.amazon.com/dp/B09GW7PCFZ)
**~~View all trending →~~**
## **What buyers say about time release vitamin c**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Vitamin**26%
*“Vitamin C was perfect”*
**Quality-Overall**21%
*“Overall solid quality from NOW like usual”*
**Ease Of Chewing/Swallowing**10%
*“Easy to swallow”*
**Value For Money**4%
*“competitive price”*
**Advertised Vs Actual Product**4%
*“it is what I wanted”*
**Acid Regulator/Stomach Ache Relief**4%
*“no stomach issues”*
**Dosage**4%
*“right dose, good value, from a good company”*
**Cold Relief**3%
*“Helps to Battle Colds and Viruses”*
**Immunity Booster**3%
*“helps with immunity”*
**Ease Of Use**2%
*“Ease of use”*
### **What buyers complain about **
**Size-Overall**17%
*“These capsules are larger”*
**Ease Of Chewing/Swallowing**13%
*“COULD NOT SWALLOW”*
**Vitamin**11%
*“So I have an expensive bottle of vitamins that I will have to throw away”*
**Taste-Overall**6%
*“Taste Aweful”*
**Acid Regulator/Stomach Ache Relief**5%
*“These HDGE pills are difficult to swallow, and unfortunately, they upset my stomach”*
**Visibility**5%
*“they are less visible after taking this for 2 weeks which i did not expect”*
**Ingredients-Overall**5%
*“Lead is poisonous”*
**Natural Ingredients**5%
*“Someone who is seeking the natural sources likely doesnt want the ascorbic acid”*
**Vegan/Organic**5%
*“Halal product- No Thanks”*
**Quality-Overall**2%
*“Very cheap”*
### **Top return reasons **
**Size-Overall**50%
**Vitamin**50%
## **Common questions**
- **Is time release vitamin c profitable to sell on Amazon United States?**
- The niche generates $371K/yr across 16 tracked products. 90-day search growth is -6.0%. Flapen's verdict: Skip it (46/100).
- **How competitive is the time release vitamin c niche?**
- 7 brands and 614 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 96% of demand.
- **What do buyers complain about in time release vitamin c?**
- Top complaints mined from reviews: Size-Overall, Ease Of Chewing/Swallowing, Vitamin. The return rate is 0.0%.
- **When does demand for time release vitamin c peak?**
- Demand peaks in Mar; the busiest month runs 1.8× the quietest.
- **What does it cost to enter the time release vitamin c niche?**
- Listings span $6.72–$33.14; the average listing price is $20.43 (sweet spot $15–$100). The average incumbent carries 7,535 reviews — the moat a new listing must climb.
## **Related niches in Health & Household**
- 76 [**cedar oil**](https://flapen.com/research/us/health-household/cedar-oil)$1.2M/yr+214.4%**Launch it**- 77 [**nutrapure glp1 cutting mix**](https://flapen.com/research/us/health-household/nutrapure-glp1-cutting-mix)$149K/yr+940.2%**Worth a look**- 77 [**dexcom g7**](https://flapen.com/research/us/health-household/dexcom-g7)$2.0M/yr+39.9%**Launch it**- 77 [**purelia**](https://flapen.com/research/us/health-household/purelia)$635K/yr+359.7%**Worth a look**- 77 [**graduation napkins**](https://flapen.com/research/us/health-household/graduation-napkins)$302K/yr+385.7%**Worth a look**- 77 [**credit card wand**](https://flapen.com/research/us/health-household/credit-card-wand)$418K/yr+101.3%**Worth a look**[**All Health & Household niches **](https://flapen.com/research/us/health-household)