---
title: "caffeine l theanine — Niche Verdict: Skip it (42/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/health-household/caffeine-l-theanine"
last_updated: "2026-07-10T01:03:57.006Z"
locale: en
meta:
  description: "a concentrated shelf (top 5 take 86% of clicks) — caffeine l theanine doesn't clear our bar today."
  "og:description": "a concentrated shelf (top 5 take 86% of clicks) — caffeine l theanine doesn't clear our bar today."
  "og:title": "caffeine l theanine — Niche Verdict: Skip it (42/100) | Amazon United States - Flapen"
---

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# **caffeine l theanine**

**Skip it****42/100 **

a concentrated shelf (top 5 take 86% of clicks) — caffeine l theanine doesn't clear our bar today.

**Market/yr**

**$347K**

**Growth (1y)**

**+124.4%**

**Products**

**10**

**Brands**

**8**

was 12 a year ago

**Sellers**

**14**

**Price range**

**$9.96–$28.42**

**Returns**

**0.0%**

**Rating**

**4.4★**

**Skip it**

Scored 42/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns

Market size

**17**

 ×0.30

Growth

**68**

 ×0.30

Competition

**6**

 ×0.20

Quality gap

**50**

 ×0.10

Returns

**100**

 ×0.10

## **Demand**

Weekly Amazon search volume, last 100 weeks — +124.4% year over year.

5K3KSpike '24Black Friday '24Spike '25Prime Day '25Spike '26Jul '24Dec '24Mar '25Jul '25Nov '25Feb '26

## **Seasonality**

Monthly demand index across the year — 1.00 is average.

JFMAMJJASOND

No pronounced peak months · busiest ÷ quietest = 1.4×

## **Competition**

- Nutricost37% - Sports Research22% - Vitamatic17% - SmarterVitamins10% - Eu Natural6% - NutraChamps3% - Other (2 brands)5%

The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack. 8 brands and 14 sellers compete here.

**Brands**

**8 **▼falling

was 12 a year ago

**Sellers**

**14**

**Top 5 brand share**

**91%**

#ProductBrandPriceRatingReviewsClick shareTrend

1
![Nutricost Caffeine with L-Theanine 100mg of Each 240 Capsules 240 Servings - Non-GMO and Gluten Free](https://m.media-amazon.com/images/I/41eEFtw23lL.jpg) [**Nutricost Caffeine with L-Theanine 100mg of Each 240 Capsules 240 Servings - Non-GMO and Gluten Free**](https://www.amazon.com/dp/B08YJ9QHG2)

Nutricost$13.864.5★2,39637%—flat

2
![Sports Research L-Theanine Supplement with Caffeine & Coconut MCT Oil - Focused Energy Alertness & Relaxation Without Drowsiness - 200mg L Theanine 100mg Organic Caffeine - 60 Liquid Softgels](https://m.media-amazon.com/images/I/41mwPvODcRL.jpg) [**Sports Research L-Theanine Supplement with Caffeine & Coconut MCT Oil - Focused Energy Alertness & Relaxation Without Drowsiness - 200mg L Theanine 100mg Organic Caffeine - 60 Liquid Softgels**](https://www.amazon.com/dp/B07MQWJYJ3)

Sports Research$21.884.5★3,55020%▼falling

3
![Vitamatic L-Theanine 200mg with Caffeine 100mg 120 Vegetarian Tablets Nootropic Supplement for Focused Energy & Mental Clarity](https://m.media-amazon.com/images/I/41yPZNsS-HL.jpg) [**Vitamatic L-Theanine 200mg with Caffeine 100mg 120 Vegetarian Tablets Nootropic Supplement for Focused Energy & Mental Clarity**](https://www.amazon.com/dp/B09PK3JJN7)

Vitamatic$9.964.5★41214%▲rising

4
![SmarterVitamins 200mg Caffeine Pills - MCT Oil from 100% Coconuts + 100mg L-Theanine Energy and Focus Extended Release Capsule 50 Liquid Softgels](https://m.media-amazon.com/images/I/41TIAPpgkDL.jpg) [**SmarterVitamins 200mg Caffeine Pills - MCT Oil from 100% Coconuts + 100mg L-Theanine Energy and Focus Extended Release Capsule 50 Liquid Softgels**](https://www.amazon.com/dp/B07FP4KS3R)

SmarterVitamins$28.424.3★11,34110%▲rising

5
![Eu Natural Elite Caffeine Pills with L-Theanine - 100mg Caffeine + 200mg L-Theanine - Jitter-Free Focused Energy & Clean Nootropic Stack - 120 Soft Capsules](https://m.media-amazon.com/images/I/51dBbduvguL.jpg) [**Eu Natural Elite Caffeine Pills with L-Theanine - 100mg Caffeine + 200mg L-Theanine - Jitter-Free Focused Energy & Clean Nootropic Stack - 120 Soft Capsules**](https://www.amazon.com/dp/B00U0DL5O2)

Eu Natural$19.624.2★3,1626%▼falling

6
![Caffeine Pills with L-Theanine - 180 Energy Pills for Women & Men - Clean & Long-Lasting Focused Energy - Sustained Release 100mg Caffeine + 200mg L Theanine - No Crash Capsules Vegan Supplement](https://m.media-amazon.com/images/I/411fLYNJZQL.jpg) [**Caffeine Pills with L-Theanine - 180 Energy Pills for Women & Men - Clean & Long-Lasting Focused Energy - Sustained Release 100mg Caffeine + 200mg L Theanine - No Crash Capsules Vegan Supplement**](https://www.amazon.com/dp/B0FGQYWL4Y)

NutraChamps$19.844.2★933%—flat

7
![VALI Caffeine 50mg & L Theanine 100mg - Caffeine Pills & L-Theanine for Smart Smooth Energy & Focus Supplement. Nootropic Brain Booster Cognitive Support Stack & Focused Clarity. 120 Veggie Capsules](https://m.media-amazon.com/images/I/41y+P0oWa4L.jpg) [**VALI Caffeine 50mg & L Theanine 100mg - Caffeine Pills & L-Theanine for Smart Smooth Energy & Focus Supplement. Nootropic Brain Booster Cognitive Support Stack & Focused Clarity. 120 Veggie Capsules**](https://www.amazon.com/dp/B074G3SYTT)

VALI$22.184.5★1,8213%▼falling

8
![Vitamatic Caffeine Pills with L-Theanine 300 mg Per Tablet 120 Vegetarian Tablets (Pack of 2 Total 240 Tablets)](https://m.media-amazon.com/images/I/51CEQBwfHXL.jpg) [**Vitamatic Caffeine Pills with L-Theanine 300 mg Per Tablet 120 Vegetarian Tablets (Pack of 2 Total 240 Tablets)**](https://www.amazon.com/dp/B0BDYJ3FZ1)

Vitamatic$18.314.5★4123%▲rising

9
![Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil Non-GMO & Gluten Free - 200mg 60 Count](https://m.media-amazon.com/images/I/41q82cyaT-L.jpg) [**Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil Non-GMO & Gluten Free - 200mg 60 Count**](https://www.amazon.com/dp/B00TXY32FY)

Sports Research$18.874.5★15,1812%▲rising

10

![Nootropics Depot Caffeine and L-Theanine Capsules | 60 Pills | Contains 100mg of Caffeine and 200mg of L-Theanine | Natural Supplement | Energy Booster | Mental Focus + Alertness | Coffee Alternative](https://m.media-amazon.com/images/I/51DKRW3i4nL.jpg) [**Nootropics Depot Caffeine and L-Theanine Capsules | 60 Pills | Contains 100mg of Caffeine and 200mg of L-Theanine | Natural Supplement | Energy Booster | Mental Focus + Alertness | Coffee Alternative**](https://www.amazon.com/dp/B01B6E2JPC)

Nootropics Depot$19.054.3★7322%▲rising

## **Product shelf**

All 10 tracked products in this niche.

Top sellersNewestTrending

[![Nutricost Caffeine with L-Theanine 100mg of Each 240 Capsules 240 Servings - Non-GMO and Gluten Free](https://m.media-amazon.com/images/I/41eEFtw23lL.jpg)**Nutricost Caffeine with L-Theanine 100mg of Each 240 Capsules 240 Servings - Non-GMO and Gluten Free** Nutricost**$13.86**4.5★2,396 reviews](https://www.amazon.com/dp/B08YJ9QHG2) [![Sports Research L-Theanine Supplement with Caffeine & Coconut MCT Oil - Focused Energy Alertness & Relaxation Without Drowsiness - 200mg L Theanine 100mg Organic Caffeine - 60 Liquid Softgels](https://m.media-amazon.com/images/I/41mwPvODcRL.jpg)**Sports Research L-Theanine Supplement with Caffeine & Coconut MCT Oil - Focused Energy Alertness & Relaxation Without Drowsiness - 200mg L Theanine 100mg Organic Caffeine - 60 Liquid Softgels** Sports Research**$21.88**4.5★3,550 reviews](https://www.amazon.com/dp/B07MQWJYJ3) [![Vitamatic L-Theanine 200mg with Caffeine 100mg 120 Vegetarian Tablets Nootropic Supplement for Focused Energy & Mental Clarity](https://m.media-amazon.com/images/I/41yPZNsS-HL.jpg)**Vitamatic L-Theanine 200mg with Caffeine 100mg 120 Vegetarian Tablets Nootropic Supplement for Focused Energy & Mental Clarity** Vitamatic**$9.96**4.5★412 reviews](https://www.amazon.com/dp/B09PK3JJN7) [![SmarterVitamins 200mg Caffeine Pills - MCT Oil from 100% Coconuts + 100mg L-Theanine Energy and Focus Extended Release Capsule 50 Liquid Softgels](https://m.media-amazon.com/images/I/41TIAPpgkDL.jpg)**SmarterVitamins 200mg Caffeine Pills - MCT Oil from 100% Coconuts + 100mg L-Theanine Energy and Focus Extended Release Capsule 50 Liquid Softgels** SmarterVitamins**$28.42**4.3★11,341 reviews](https://www.amazon.com/dp/B07FP4KS3R) [![Eu Natural Elite Caffeine Pills with L-Theanine - 100mg Caffeine + 200mg L-Theanine - Jitter-Free Focused Energy & Clean Nootropic Stack - 120 Soft Capsules](https://m.media-amazon.com/images/I/51dBbduvguL.jpg)**Eu Natural Elite Caffeine Pills with L-Theanine - 100mg Caffeine + 200mg L-Theanine - Jitter-Free Focused Energy & Clean Nootropic Stack - 120 Soft Capsules** Eu Natural**$19.62**4.2★3,162 reviews](https://www.amazon.com/dp/B00U0DL5O2) [![Caffeine Pills with L-Theanine - 180 Energy Pills for Women & Men - Clean & Long-Lasting Focused Energy - Sustained Release 100mg Caffeine + 200mg L Theanine - No Crash Capsules Vegan Supplement](https://m.media-amazon.com/images/I/411fLYNJZQL.jpg)**Caffeine Pills with L-Theanine - 180 Energy Pills for Women & Men - Clean & Long-Lasting Focused Energy - Sustained Release 100mg Caffeine + 200mg L Theanine - No Crash Capsules Vegan Supplement** NutraChamps**$19.84**4.2★93 reviews](https://www.amazon.com/dp/B0FGQYWL4Y) [![VALI Caffeine 50mg & L Theanine 100mg - Caffeine Pills & L-Theanine for Smart Smooth Energy & Focus Supplement. Nootropic Brain Booster Cognitive Support Stack & Focused Clarity. 120 Veggie Capsules](https://m.media-amazon.com/images/I/41y+P0oWa4L.jpg)**VALI Caffeine 50mg & L Theanine 100mg - Caffeine Pills & L-Theanine for Smart Smooth Energy & Focus Supplement. Nootropic Brain Booster Cognitive Support Stack & Focused Clarity. 120 Veggie Capsules** VALI**$22.18**4.5★1,821 reviews](https://www.amazon.com/dp/B074G3SYTT) [![Vitamatic Caffeine Pills with L-Theanine 300 mg Per Tablet 120 Vegetarian Tablets (Pack of 2 Total 240 Tablets)](https://m.media-amazon.com/images/I/51CEQBwfHXL.jpg)**Vitamatic Caffeine Pills with L-Theanine 300 mg Per Tablet 120 Vegetarian Tablets (Pack of 2 Total 240 Tablets)** Vitamatic**$18.31**4.5★412 reviews](https://www.amazon.com/dp/B0BDYJ3FZ1)

## **Reviews**

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

### **What buyers love **

**Energy Level**14%

*“Lots of energy”*

**Focus Enhancement**13%

*“Improves focus and memory”*

**Quality-Overall**10%

*“Good quality and trusted brand”*

**Caffeine Content**9%

*“Great Caffeine Capsules”*

**Sleep Quality**5%

*“Improved sleep”*

**Efficiency**5%

*“Very effective”*

**Vitamin**4%

*“Their vitamins are also the highest quality available”*

**Stress/Anxiety**4%

*“Its helped so much with anxiety attacks”*

**Value For Money**4%

*“great product for a good price”*

**Dosage**3%

*“Seems to be a good dosage”*

### **What buyers complain about **

**Sleep Quality**10%

*“Makes you very sleepy”*

**Functionality-Overall**10%

*“it didnt help”*

**Energy Level**9%

*“Does not give You Energy”*

**Dosage**6%

*“I cant distinguish if this level of dose is doing any thing”*

**Taste-Overall**5%

*“don't want to ingest milk, sugar, flavoring, and maybe don't even like the taste of coffee”*

**Stress/Anxiety**4%

*“without the jitters or increased anxiety”*

**Value For Money**4%

*“the value feel questionable”*

**Side Effects**3%

*“I will react with nausea or something else”*

**Stuck/Fused Together**2%

*“many of the capsules were clumped together”*

**Focus Enhancement**2%

*“I did not feel any different in focus and relaxation”*

#### **Top return reasons**- Advertised Vs Actual Product30% - Functionality-Overall23% - Ingredients-Overall13% - Value For Money13% - Strength7% - Smell7% - Side Effects3% - Dosage3%