---
title: "Sublingual Vitamin D — $101K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/sublingual-vitamin-d"
last_updated: "2026-08-11T06:25:22.634Z"
locale: en
meta:
description: "Niche score 46/100 · $101K/yr market · 48K searches/yr · $17.70 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:description": "Niche score 46/100 · $101K/yr market · 48K searches/yr · $17.70 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:title": "Sublingual Vitamin D — $101K/yr Amazon US Niche (2026) - Flapen"
---
# **sublingual vitamin d**
**Skip it**
Strong incumbent ratings (4.7★) — this niche doesn't clear our bar today.
Market size 25Growth 25Conversion 95Competition 29Returns 100Price range 67Avg price 82Brand share 34Review moat 36Quality gap 22
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****12.0%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$17.70**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$6.29–$33.00**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Okay****2,925.47**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****84%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****68%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$101K**
$101K/yr · 48K searches
**Growth**
**Okay****+0.3%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, sublingual vitamin d is a $101K/yr Amazon United States market (48K searches/yr). The top 5 brands hold 84% of demand. Verdict: Skip it — 46/100.
Data updated Aug 5, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **sublingual vitamin d market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **$106K–$142K**
- units × avg price
- **Conversion rate**
- **12.0%**
- **Avg BSR**
- **#543**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **82%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **87 months**
- **Avg seller age**
- **168 days**
## **Competition & brand share**
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **▲rising
**Sellers**
**55**
**Top-5 brand share**
**84%**
Top 20: 100%
**Top-5 click share**
**68%**
Top 20: 100%
**Open market**
**13%**
- Superior Source56% - EZ Melts11% - Nature Made8% - NUSAVA6% - NUTRAHARMONY3% - MARYRUTH'S3% - Open — no brand owns it (7 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 103 weeks — +0.3% search growth over the last 90 days.
1K750Prime Day '25Black Friday '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/health-household/sublingual-vitamin-d/trend)
## **Top sublingual vitamin d search terms**
- **sublingual vitamin d**13K/yr-1.3%7.4% conv. - **superior source vitamin d3**8K/yr+70.4%10.7% conv. - **vitamin d sublingual**8K/yr-17.0%10.7% conv. - **vitamin d dissolvable tablets**4K/yr-6.7%12.1% conv. - **superior source d3**3K/yr-13.1%23.1% conv. - **sublingual vitamin d3**3K/yr-26.6%7.5% conv. - **vitamin d3 sublingual**3K/yr-12.6%11.6% conv. - **sublingual d3**4K/yr-26.2%9.8% conv. - **d3 sublingual**2K/yr+3.4%8.9% conv. [**All search terms **](https://flapen.com/research/us/health-household/sublingual-vitamin-d/search-terms)
## **Top sublingual 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.
0%10%$10K20%$20K30%$30K40%$40K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Superior Source Vitamin D3 5000 IU - Offers Immune System Brain & Nervous System Support - Aids Calcium Absorption for Teeth & Bone Health - Bariatric Friendly - 100 Sublingual Dissolving Tablets**Superior Source**$12.27**4.8★3,690 rev](https://www.amazon.com/dp/B003AWCTN6) [2**Superior Source Vitamin D3 1000 IU - Offers Immune System Brain & Nervous System Support - Aids Calcium Absorption for Teeth & Bone Health - Bariatric Friendly - 100 Sublingual Dissolving Tablets**Superior Source**$7.38**4.7★1,941 rev](https://www.amazon.com/dp/B003VR6DEG) [3**Superior Source Vitamin D3 10000 IU Quick Dissolve MicroLingual Tablets 100 Count Helps Promote Strong Bones and Teeth Immune Support Helps Maintain Healthy Muscle Function Non-GMO**Superior Source**$16.83**4.8★2,288 rev](https://www.amazon.com/dp/B005AY7JJG) [4**Nature Made Vitamin D3 5000 IU (125 mcg) 70 Fast Dissolve Tablets**Nature Made**$11.80**4.8★1,774 rev](https://www.amazon.com/dp/B0BX7J8KQ2) [5**EZ Melts Dissolvable Vitamin D3 5 000 IU - Vegan Vitamin D Supplement for Bone & Teeth Support - No Artificial Flavors - Plant-Based & Non-GMO - Green Apple - 90 Dissolvable Tablets (90 Servings)**EZ Melts**$16.98**4.8★4,348 rev](https://www.amazon.com/dp/B00NV5UTMK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Vitamin D3 K2 USDA Organic Drops - Vitamin D3 10000 IU & K2 120mcg - 2 OZ**NUTRAHARMONY**$19.17**1,312 rev1y ago](https://www.amazon.com/dp/B0DNNFTK92) [**5-in-1 Vitamin D3 K2 Drops Vitamin D3 10400 IU & K2(MK-7) 200mcg**Venture Pal**$15.84**514 rev1y ago](https://www.amazon.com/dp/B0DJRD5LCB) [**Nature Made Vitamin D3 5000 IU (125 mcg) 70 Fast Dissolve Tablets**Nature Made**$11.80**1,774 rev3y ago](https://www.amazon.com/dp/B0BX7J8KQ2) [**Organic Vitamin D3 10 000 IU - Plant D3 Vegan Max Strength Sublingual Liquid D3 Drops - 200% Higher Absorption 100% Plant-Based Cholecalciferol Form & Vegan D3 Adjustable Dosing (30 Servings)**Triquetra Health**$19.76**968 rev4y ago](https://www.amazon.com/dp/B09YJ3WZZZ) [**EZ Melts Dissolvable Vegan Vitamin D3 + K2 5 000 IU - Bone & Heart Health Support - Immune Function Support - No Artificial Flavors - Non-GMO - Green Apple - 90 Dissolvable Tablets (90 Servings)**EZ Melts**$22.76**1,633 rev4y ago](https://www.amazon.com/dp/B09S2YST7Y)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Vitamin D3 K2 USDA Organic Drops - Vitamin D3 10000 IU & K2 120mcg - 2 OZ**NUTRAHARMONY**$19.17**4.7★**▲ 68%**](https://www.amazon.com/dp/B0DNNFTK92) [**Pure Encapsulations Vitamin D3 Liquid | Supplement to Support Bone Breast Cardiovascular Colon and Immune Health* | 0.75 fl. oz.**Pure Encapsulations**$32.15**4.6★**▲ 32%**](https://www.amazon.com/dp/B0017OFTTU) [**NOW Foods Supplements Liquid Vitamin D-3 Strong Bones* Structural Support* 2-Ounce**NOW Foods**$6.29**4.5★**▲ 20%**](https://www.amazon.com/dp/B001N4JYX6) [**Superior Source Vitamin D3 1000 IU - Offers Immune System Brain & Nervous System Support - Aids Calcium Absorption for Teeth & Bone Health - Bariatric Friendly - 100 Sublingual Dissolving Tablets**Superior Source**$7.38**4.7★**▲ 14%**](https://www.amazon.com/dp/B003VR6DEG) [**EZ Melts Dissolvable Vegan Vitamin D3 + K2 5 000 IU - Bone & Heart Health Support - Immune Function Support - No Artificial Flavors - Non-GMO - Green Apple - 90 Dissolvable Tablets (90 Servings)**EZ Melts**$22.76**4.7★**▲ 11%**](https://www.amazon.com/dp/B09S2YST7Y)
**~~View all trending →~~**
## **What buyers say about sublingual vitamin d**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Vitamin**20%
*“Healthy vitamin”*
**Quality-Overall**15%
*“Easy to take and quality”*
**Taste-Overall**12%
*“Orange taste”*
**Ease Of Use**9%
*“Easy Daily Use”*
**Value For Money**5%
*“reasonably priced”*
**Dosage**3%
*“so its easy to take just a few drops”*
**Energy Level**3%
*“gives me energy”*
**Flavor**3%
*“Clean components and wonder flavor”*
**Efficiency**3%
*“It really does work”*
**Solubility**2%
*“Dissolves easily”*
### **What buyers complain about **
**Taste-Overall**20%
*“Strong fish taste”*
**Vitamin**9%
*“Dropper is very difficult to extract the vitamins”*
**Dispensing Mechanism**6%
*“Hard to dispense”*
**Ease Of Use**5%
*“The dropper is very hard to use”*
**Dosage**4%
*“exact dosing is difficult”*
**Functionality-Overall**3%
*“Doesn't work”*
**Value For Money**3%
*“Expensive,”*
**Leak-Proof**2%
*“they both leaked”*
**Flavor**2%
*“not a huge fan of the orange flavor”*
**Size-Overall**1%
*“The tablets are small”*
### **Top return reasons **
**Flavor**14%
**Dilute/Watery**14%
**Leak-Proof**14%
**Dosage**14%
**Product Condition**7%
**Side Effects**7%
**Acid Regulator/Stomach Ache Relief**7%
**Ingredients-Overall**7%
**Value For Money**7%
**Taste-Overall**4%
## **Common questions**
- **Is sublingual vitamin d profitable to sell on Amazon United States?**
- The niche generates $101K/yr across 17 tracked products. 90-day search growth is +0.3%. Flapen's verdict: Skip it (46/100).
- **How competitive is the sublingual vitamin d niche?**
- 13 brands and 55 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 84% of demand.
- **What do buyers complain about in sublingual vitamin d?**
- Top complaints mined from reviews: Taste-Overall, Vitamin, Dispensing Mechanism. The return rate is 0.0%.
- **When does demand for sublingual vitamin d peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the sublingual vitamin d niche?**
- Listings span $6.29–$33.00; the average listing price is $17.70 (sweet spot $15–$100). The average incumbent carries 2,925 reviews — the moat a new listing must climb.
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