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.

sublingual vitamin d

Skip it

Strong incumbent ratings (4.7★) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Great12.0%

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

Okay2,925.47

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay84%

top-5 brand share — brands hold most of the demand

Competition

Okay68%

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

Bad4.7★

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

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

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.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top sublingual vitamin d search terms

sublingual vitamin d13K/yr -1.3%7.4% conv.
superior source vitamin d38K/yr +70.4%10.7% conv.
vitamin d sublingual8K/yr -17.0%10.7% conv.
vitamin d dissolvable tablets4K/yr -6.7%12.1% conv.
superior source d33K/yr -13.1%23.1% conv.
sublingual vitamin d33K/yr -26.6%7.5% conv.
vitamin d3 sublingual3K/yr -12.6%11.6% conv.
sublingual d34K/yr -26.2%9.8% conv.
d3 sublingual2K/yr +3.4%8.9% conv.

All 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.

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

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$12.274.8★3,690 rev

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$7.384.7★1,941 rev

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$16.834.8★2,288 rev

Nature Made Vitamin D3 5000 IU (125 mcg) 70 Fast Dissolve Tablets

Nature Made$11.804.8★1,774 rev

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$16.984.8★4,348 rev

Newest

by launch date

Vitamin D3 K2 USDA Organic Drops - Vitamin D3 10000 IU & K2 120mcg - 2 OZ

NUTRAHARMONY$19.171,312 rev

1y ago

5-in-1 Vitamin D3 K2 Drops Vitamin D3 10400 IU & K2(MK-7) 200mcg

Venture Pal$15.84514 rev

1y ago

Nature Made Vitamin D3 5000 IU (125 mcg) 70 Fast Dissolve Tablets

Nature Made$11.801,774 rev

3y ago

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$19.76968 rev

4y ago

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$22.761,633 rev

4y ago

What buyers say about sublingual vitamin d

What buyers praise and complain about, mined from review topics.

What buyers love

Vitamin20%

“Healthy vitamin”

Quality-Overall15%

“Easy to take and quality”

Taste-Overall12%

“Orange taste”

Ease Of Use9%

“Easy Daily Use”

Value For Money5%

“reasonably priced”

Dosage3%

“so its easy to take just a few drops”

Energy Level3%

“gives me energy”

Flavor3%

“Clean components and wonder flavor”

Efficiency3%

“It really does work”

Solubility2%

“Dissolves easily”

What buyers complain about

Taste-Overall20%

“Strong fish taste”

Vitamin9%

“Dropper is very difficult to extract the vitamins”

Dispensing Mechanism6%

“Hard to dispense”

Ease Of Use5%

“The dropper is very hard to use”

Dosage4%

“exact dosing is difficult”

Functionality-Overall3%

“Doesn't work”

Value For Money3%

“Expensive,”

Leak-Proof2%

“they both leaked”

Flavor2%

“not a huge fan of the orange flavor”

Size-Overall1%

“The tablets are small”

Top return reasons

Flavor14%

Dilute/Watery14%

Leak-Proof14%

Dosage14%

Product Condition7%

Side Effects7%

Acid Regulator/Stomach Ache Relief7%

Ingredients-Overall7%

Value For Money7%

Taste-Overall4%

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.