gaba l-theanine supplement
Worth a lookShows 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
Incredible$24.19avg listing price — sweet spot $15–$100
Price range
Great$11.48–$48.89cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great7.5%search→purchase rate — share of searches ending in a sale
Brand share
Good63%top-5 brand share — brands hold most of the demand
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Market size
Okay$265K$265K/yr · 145K searches
Competition
Okay57%top-5 click share — leaders hold, buyers still browse
Review moat
Okay2,920.68avg incumbent reviews — the moat a new listing must climb
Growth
Okay+4.3%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, gaba l-theanine supplement is a $265K/yr Amazon United States market (145K searches/yr). The top 5 brands hold 63% of demand. Verdict: Worth a look — 60/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
gaba l-theanine supplement market data
- Units sold / yr
- 10K–13K
- avg 500–750/product
- Revenue / yr
- $242K–$302K
- units × avg price
- Conversion rate
- 7.5%
- Avg BSR
- #548
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 86%
- Out of stock
- 0.0%
- Avg brand age
- 52 months
- Avg seller age
- 159 days
Competition & brand share
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.Brands
17 rising
Sellers
619
Top-5 brand share
63%
Top 20: 100%
Top-5 click share
57%
Top 20: 97%
Open market
32%
- NUTRAHARMONY27%
- Clean Nutraceuticals14%
- Quicksilver Scientific9%
- OLLY8%
- NOW Foods6%
- Pure Encapsulations5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +4.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top gaba l-theanine supplement search terms
- gaba l-theanine supplement103K/yr
- gaba l theanine24K/yr
- l theanine gaba7K/yr
- gaba l-theanine4K/yr
- gaba and l-theanine supplement4K/yr
- l theanine and gaba5K/yr
Top gaba l-theanine supplement 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.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
GABA L-Theanine 900 mg - Magnesium | Vitamin B6 - Calm Sleep Relaxation & Mood Support - Lab Tested - 750 mg Gamma AminoButyric Acid 150 mg L-Theanine - Non-Habit Forming Vegan - 120 Capsules
NUTRAHARMONY$21.664.4★2,098 rev
Clean Nutraceuticals GABA 750mg 5 HTP 200mg L Tryptophan 500mg L Theanine 200mg Ashwagandha SAM-e L-Glycine - Mood Support Vitamins for Women and Men with L-Tyrosine 5-HTP (5-Hydroxytryptophan)
Clean Nutraceuticals$28.044.4★2,665 rev
Quicksilver Scientific Liposomal GABA + L Theanine - Calm Stress Response & Brain Support - Bioavailable GABA Supplement with L Theanine 100mg (1.7oz/50ml)
Quicksilver Scientific$36.254.2★852 rev
Dr. Mercola L-Theanine Plus GABA - Supports Relaxation - Focus & Cognitive Function - Stress Support Supplement - 200 mg L-Theanine - 100 mg GABA - 60 Capsules
Dr. Mercola$29.344.5★93 rev
OLLY Goodbye Stress Gummy GABA L-Theanine Lemon Balm Stress Relief Supplement Berry - 42 Count
OLLY$11.594.4★14,359 rev
Newest
by launch date
GABA L-Theanine Ashwagandha - 1050mg Blend - Made in USA - Advanced Sleep Aid & Calm- Magnesium 5-HTP Vitamin B6 & B12 GABA (Gamma Aminobutyric Acid) Supplement - Melatonin-Free & Non-Habit Forming
Fidus$15.36660 rev
Micro Ingredients GABA 750 mg with MCT Oil 300 Softgels | Gamma Aminobutyric Acid with Vitamin B6 5-HTP L-Theanine L-Tryptophan & Magnesium Glycinate | Non-GMO cGMP Manufactured
Micro Ingredients$14.7755 rev
Micro Ingredients 5-HTP 200mg 240 Softgels | Extra Strength 5-Hydroxytryptophan Complex with GABA L-Theanine Vitamin B6 | Highly Bioavailable with Hemp Seed Oil Carrier | Non-GMO
Micro Ingredients$21.70126 rev
GABA Supplements 750mg with L-Theanine & Ashwagandha for Calm & Sleep 90CT
Lukaree$19.30160 rev
NOW Foods Supplements L-Theanine 200 mg with Inositol Stress Management* 120 Veg Capsules with Now Supplements GABA (Gamma-Aminobutyric Acid) 750mg 100 Veg Capsules
NOW Foods$34.9814 rev
Trending
90-day click momentum
Integrative Therapeutics Cortisol Manager - Balance Cortisol & Support Relaxation for Restful Sleep* - Includes Ashwagandha & L-Theanine for Confidence with Less Stress* - 30 Tablets
Integrative Therapeutics$25.214.2★
Micro Ingredients GABA 750 mg with MCT Oil 300 Softgels | Gamma Aminobutyric Acid with Vitamin B6 5-HTP L-Theanine L-Tryptophan & Magnesium Glycinate | Non-GMO cGMP Manufactured
Micro Ingredients$14.774.6★
Nutricost GABA (Gamma Aminobutyric Acid) 750mg 240 Capsules
Nutricost$18.764.6★
GABA Supplement - 1000 mg Liposomal Form for Optimal Absorption GABA with L-Theanine Magnesium Glycinate 5HTP Vitamin D3 for Calm Relaxation Mood Restful Night - Melatonin-Free 120 Softgels.
LILICARE$28.524.3★
THORNE - PharmaGABA-100 - GABA Supplement - 100 mg Natural Source Gamma-Aminobutyric Acid - Support a Calm State of Mind and Restful Sleep* - 60 Capsules
THORNE$32.244.5★
What buyers say about gaba l-theanine supplement
What buyers praise and complain about, mined from review topics.What buyers love
“Helps with sleep”
“Stress reliever”
“Its non-GMO and clean, so I feel pretty good about the quality overall”
“Effective”
“Good supplement”
“Helps relax”
“Just as advertised”
“Actually helped improve my focus”
“reasonable price”
“Haven't experienced any side effects”
What buyers complain about
“Did not help with sleep”
“Not effective for me”
“DOES NOT HELP STRESS”
“Could make you VERY nauseous”
“Waste of money”
“I dont know if its the dosage or a bad batch”
“Upset my stomach”
“taste gross”
“both times I've had bad heart palpitations”
“hard to swallow”
Top return reasons
Common questions
- Is gaba l-theanine supplement profitable to sell on Amazon United States?
- The niche generates $265K/yr across 22 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +4.3%. Flapen's verdict: Worth a look (60/100).
- How competitive is the gaba l-theanine supplement niche?
- 17 brands and 619 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 63% of demand.
- What do buyers complain about in gaba l-theanine supplement?
- Top complaints mined from reviews: Sleep Quality, Functionality-Overall, Stress/Anxiety. The return rate is 0.0%.
- When does demand for gaba l-theanine supplement peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the gaba l-theanine supplement niche?
- Listings span $11.48–$48.89; the average listing price is $24.19 (sweet spot $15–$100). The average incumbent carries 2,921 reviews — the moat a new listing must climb.