Is l theanine gummy profitable to sell on Amazon United States?

The niche generates $405K/yr across 37 tracked products. 6 of 14 products launched in the last 360 days are still selling. 90-day search growth is +1.8%. Flapen's verdict: Worth a look (65/100).

How competitive is the l theanine gummy niche?

31 brands and 642 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 48% of demand.

What do buyers complain about in l theanine gummy?

Top complaints mined from reviews: Taste-Overall, Sleep Quality, Functionality-Overall. The return rate is 0.0%.

When does demand for l theanine gummy peak?

Demand peaks in Sep; the busiest month runs 7.7× the quietest.

What does it cost to enter the l theanine gummy niche?

Listings span $7.35–$44.10; the average listing price is $20.16 (sweet spot $15–$100). The average incumbent carries 2,300 reviews — the moat a new listing must climb.

L Theanine Gummy

Worth a look

Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$20.16

avg listing price — sweet spot $15–$100

Brand share

Great48%

top-5 brand share — no brand owns this niche

Conversion

Great8.6%

search→purchase rate — share of searches ending in a sale

Price range

Great$7.35–$44.10

cheapest to priciest tracked listing — scored on the share inside $15–$100

Competition

Good41%

top-5 click share — leaders hold, buyers still browse

Market size

Good$405K

$405K/yr · 233K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay2,300.27

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+1.8%

90-day search growth — must beat 0% to launch

Signals No Dominant Brand

Is l theanine gummy profitable on Amazon?

According to Flapen's Amazon United States niche tracking, l theanine gummy is a $405K/yr Amazon United States market (233K searches/yr). The top 5 brands hold 48% of demand. Demand peaks in Sep. Verdict: Worth a look — 65/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

l theanine gummy market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 15K–20K; avg 250–500/product
Revenue / yr: $302K–$403K; units × avg price
Conversion rate: 8.6%
Avg BSR: #2,439
Page quality: 0%
Prime: 100%
Sponsored: 92%
Out of stock: 2.3%
Avg brand age: 38 months
Avg seller age: 158 days

Competition: brands, sellers & click share

The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.

Brands

31 rising

Sellers

642

Top-5 brand share

48%

Top 20: 92%

Top-5 click share

41%

Top 20: 87%

Open market

45%

Nature Made15%
OLLY11%
GrnLife9%
HUUAYAO8%
FloHydro7%
kindnature7%

l theanine gummy demand & seasonality

Weekly Amazon search volume, last 103 weeks — +1.8% search growth over the last 90 days.

Peak months: Sep · busiest ÷ quietest = 7.7×

Open Trend

Top l theanine gummy search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

l theanine gummies133K/yr -1.6%7.0% conv.
l-theanine gummies44K/yr +12.4%6.8% conv.
ltheanine gummies13K/yr +17.7%6.9% conv.
l theanine gummy10K/yr +28.4%3.9% conv.
theanine gummies12K/yr -31.3%8.1% conv.
brain md l theanine gummies7K/yr +1.3%5.0% conv.
l theanine gummies for adults5K/yr +73.2%6.1% conv.
l theanine supplement gummies6K/yr -19.3%8.8% conv.
l.theanine gummies2K/yr -61.3%7.5% conv.

All search terms

Top l theanine gummy products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Nature Made Chewable L Theanine 200mg L-Theanine Supplement for Stress Relief 50 Chewable Tablets 50 Day Supply

Nature Made$13.254.6★2,023 rev

OLLY Goodbye Stress Gummy GABA L-Theanine Lemon Balm Stress Relief Supplement Berry - 42 Count

OLLY$11.594.4★14,359 rev

GrnLife L-Theanine Gummies for Kids & Adults LTheanine 400mg with Ashwagandha GABA 5HTP L Theanine Supplement for Calm Zzz & Relaxation Support Raspberry Flavor 60 Counts

GrnLife$17.434.6★103 rev

HUUAYAO L-Theanine Gummies 400mg L-Theanine Supplement for Kids & Adults with Ashwagandha GABA 5HTP for Calm Zzz & Relaxation Support Raspberry Flavor 60 Counts

HUUAYAO$10.684.7★47 rev

FloHydro L-Theanine Gummies | 200mg L Theanine per Serving | 120 Servings | Zero Sugar | 3rd-Party Lab Tested

FloHydro$30.054.9★55 rev

Newest

by launch date

Tulvex L-Theanine Calm Gummies 200mg Sugar-Free Liposomal L Theanine Supplement for Brain Relax Zzz Stress Fast-Acting Calm & Mood Support Vitamin B6 Vegan Non-GMO

Tulvex$23.3023 rev

3mo ago

HUUAYAO L-Theanine Gummies 400mg L-Theanine Supplement for Kids & Adults with Ashwagandha GABA 5HTP for Calm Zzz & Relaxation Support Raspberry Flavor 60 Counts

HUUAYAO$10.6847 rev

6mo ago

GlaGmrry 90 Count | L Theanine Gummies L Theanine Supplement for Adults & Kids w/Ashwagandha Magnesium GABA & 5-HTP Sugar Free Liposomal Formula for Calm Relax zzZ Md & Focus Vegan

GlaGmrry$20.5051 rev

7mo ago

BrainMD L-Theanine Gummies - Natural Stress Relief Supplement - 60 Count

BRAINMD$21.961 rev

8mo ago

FloHydro L-Theanine Gummies | 200mg L Theanine per Serving | 120 Servings | Zero Sugar | 3rd-Party Lab Tested

FloHydro$30.0555 rev

8mo ago

What reviews say buyers love and hate about l theanine gummy

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

What buyers love

Sleep Quality16%

“Helps me sleep”

Taste-Overall14%

“Taste great and effective for me”

Stress/Anxiety10%

“Works for stress”

Quality-Overall6%

“Quality is consistent”

Flavor5%

“fruity flavor”

Soothing Effect5%

“It gives me relaxation”

Focus Enhancement4%

“Helps with focus”

Ease Of Use3%

“easy to open”

Ease Of Chewing/Swallowing3%

“soft to chew”

Magnesium3%

“I love a good magnesium supplement”

What buyers complain about

Taste-Overall18%

“Bad tasting”

Sleep Quality8%

“Doesn't help with sleep”

Functionality-Overall6%

“it didnt help”

Stress/Anxiety4%

“my anxiety skyrocketed”

Ingredients-Overall3%

“Tasted like something artificial was in its ingredient”

Value For Money2%

“Not worth it”

Texture/Consistency-Overall2%

“Horrible texture”

Flavor2%

“that is saying a lot because I don't usually like fruit flavored gummies”

Ease Of Chewing/Swallowing2%

“shudder at the point of swallowing”

Artificial Sweeteners2%

“I am a bit disappointed in their choice of sweetener”

Top return reasons

Functionality-Overall30%

Taste-Overall13%

Ingredients-Overall11%

Flavor11%

Moist/Dry7%

Value For Money7%

Ethical Trade/Fair Trade4%

Vitamin4%

Advertised Vs Actual Product4%

Dilute/Watery4%

Common l theanine gummy questions

Is l theanine gummy profitable to sell on Amazon United States?: The niche generates $405K/yr across 37 tracked products. 6 of 14 products launched in the last 360 days are still selling. 90-day search growth is +1.8%. Flapen's verdict: Worth a look (65/100).
How competitive is the l theanine gummy niche?: 31 brands and 642 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 48% of demand.
What do buyers complain about in l theanine gummy?: Top complaints mined from reviews: Taste-Overall, Sleep Quality, Functionality-Overall. The return rate is 0.0%.
When does demand for l theanine gummy peak?: Demand peaks in Sep; the busiest month runs 7.7× the quietest.
What does it cost to enter the l theanine gummy niche?: Listings span $7.35–$44.10; the average listing price is $20.16 (sweet spot $15–$100). The average incumbent carries 2,300 reviews — the moat a new listing must climb.