RSP AminoLean Review: Is Amino Lean a Good Supplement?
Reading Time: 17 minutes I’ve used RSP AminoLean for over a decade, and my Amino Lean review will help you understand why it is one of my all-time favorite supplements and one of the few supplements I still purchase consistently.
Packed with essential amino acids (EAAs), key micronutrients, and metabolism-boosting ingredients, Amino Lean is a versatile supplement that can increase energy, focus, and endurance while helping burn fat and promote muscle recovery after workouts.
I think I first tried AminoLean around 2014 when I was finishing college, and it has been a staple in my supplement stack ever since.
Now, as a professional athlete, I still love Amino Lean because it provides more energy than a cup of coffee and doesn’t cause intense jitters or intense feelings from too much caffeine.
Because of this, I can drink it before all my workouts, whether weight training, cardio, or basketball.
By using AminoLean instead of coffee or other pre workout supplements, I regularly fuel my body with additional amino acids and metabolism-boosting ingredients that help me recover faster and optimize my body composition while traveling and playing basketball worldwide.
To learn why this supplement can give you the boost you need, read the rest of my AminoLean review!
Last update on 2025-04-20 / This article includes affiliate links/Images via Amazon Product Advertising API. I may earn commissions on purchases made through these links.
What is RSP Nutrition Amino Lean?
RSP Nutrition AminoLean is an all-in-one supplement designed to provide clean energy, support muscle recovery, and promote weight management.
It combines natural caffeine sources, essential amino acids (EAAs), and a proprietary blend of metabolism-supporting ingredients, making it a versatile option for people who want more than just a typical pre-workout.
With 125mg of natural caffeine per serving, sourced from tea leaves and organic matcha, AminoLean delivers a smooth energy boost without the harsh crash often associated with synthetic stimulants.
It includes 5g of amino acids, including 8 of the 9 essential amino acids, which support muscle repair, recovery, and growth—making it useful for both strength and endurance athletes.
Unlike standard BCAA formulas, it provides eight of the nine essential amino acids, offering broader support for recovery and performance.
AminoLean also contains ingredients like CLA, L-Carnitine, Green Tea Extract, and Green Coffee Bean Extract, all aimed at boosting metabolism and supporting fat loss when combined with proper diet and exercise.
Its sugar-free, carb-free, and low-calorie formulation makes it suitable for various diet plans, including keto and intermittent fasting protocols.
Because of its balanced formula, it can be used at different times of the day—as a pre-workout, a midday energy boost, or even a coffee alternative.
With a wide range of flavors and no artificial sweeteners, it’s a popular choice among individuals looking for a convenient, multi-benefit supplement.
Key Ingredients in AminoLean
AminoLean contains multiple beneficial ingredients and energy sources to create a versatile formula that supports fitness and wellness goals.
Crafted with natural flavors, citric acid, and colors from natural sources, AminoLean avoids artificial additives, appealing to those who prioritize clean ingredients.
Each component serves a purpose, from enhancing energy and focus to supporting muscle recovery and fat metabolism.
While the natural flavoring may vary in appeal based on personal taste, this thoughtful ingredient profile makes AminoLean a valuable, well-rounded choice for health-conscious people.
Amino Acids
AminoLean delivers 5 grams of essential amino acids (EAAs) such as L-leucine, L-citrulline, and L-glutamine, each critical to muscle repair, recovery, and growth.
Leucine, for example, is well-known for triggering muscle protein synthesis, essential for rebuilding muscle tissue after exercise.
L-citrulline enhances blood flow and endurance, while L-glutamine aids in immune health and muscle recovery.
In contrast to standard BCAA supplements, this supplement includes eight of the nine EAAs, providing more comprehensive support for muscle maintenance and overall performance.
By containing eight of the nine EAAs, AminoLean aims to meet broader recovery needs, although I question whether the dose is sufficient for more intense training demands.
L-Carnitine L-Tartrate:
L-carnitine assists in transporting fatty acids into the mitochondria, where they are used as fuel during exercise.
In addition to its role in fat metabolism, L-Carnitine L-Tartrate has been shown to support exercise recovery by reducing muscle damage and soreness, which can improve overall training consistency and performance.
Conjugated Linoleic Acid (CLA)
Known for its potential fat-reducing properties, Conjugated Linoleic Acid (CLA) is a staple in many weight-loss supplements.
Some studies suggest it may help shift the body’s composition by reducing fat mass while preserving lean muscle, though individual responses can vary significantly, and more research is needed to confirm long-term efficacy.
Green Tea Extract
Rich in catechins, particularly EGCG, green tea extract offers antioxidant support and a modest thermogenic effect, which can enhance fat oxidation during exercise.
Regular use may contribute to improved metabolic efficiency, especially when paired with physical activity and a calorie-controlled diet.
Green Coffee Bean Extract
High in chlorogenic acids, green coffee bean extract can help reduce the absorption of carbohydrates from the digestive tract, potentially lowering blood sugar spikes and insulin response.
Over time, this can lead to improved metabolic health and body composition, especially in those with sedentary or high-carb eating habits.
InnovaTea® Natural Caffeine
Sourced from non-GMO tea leaves, InnovaTea® delivers naturally derived caffeine which provides a clean, sustained energy boost that helps improve reaction time, concentration, and overall workout intensity.
Unlike synthetic caffeine anhydrous, it’s often associated with fewer jitters and less abrupt crashes, making it ideal for those seeking mental clarity and physical performance without overstimulation.
Organic Matcha
Matcha is a finely ground green tea powder that delivers a gentler caffeine experience thanks to its unique combination of caffeine and L-theanine, an amino acid that promotes calm focus.
The result is enhanced mental alertness without anxiety, making it ideal for users sensitive to stimulants.
Matcha is also rich in polyphenols and EGCG, offering antioxidant protection that supports cellular health and reduces exercise-induced oxidative stress.
Benefits of AminoLean
AminoLean is more than just a pre-workout—it’s a multifunctional supplement designed to support energy, performance, recovery, and body composition.
Whether you’re training hard, managing your weight, or just looking for a cleaner source of energy during the day, AminoLean offers a unique blend of ingredients to help you stay on track.
Clean, Natural Energy Boost
AminoLean delivers 125mg of natural caffeine per serving, sourced from InnovaTea® and organic matcha.
Unlike synthetic caffeine, these ingredients provide a smoother, more sustained energy release that enhances physical and mental performance without the common crash or jitters.
This makes it ideal for morning workouts, midday energy slumps, or any time you need increased focus and endurance.
Full-Spectrum Amino Acid Support
Of the primary benefits of AminoLean is that each serving contains 5 grams of essential amino acids (EAAs), including L-leucine, L-citrulline, and L-glutamine.
EAAs are critical for muscle repair, growth, and preservation, especially during periods of caloric deficit or intense training.
Unlike BCAA supplements, AminoLean includes eight of the nine EAAs, making it more effective for comprehensive recovery and muscle protein synthesis.
Enhanced Fat Metabolism & Weight Management
The proprietary Weight Management Blend features CLA, L-Carnitine L-Tartrate, Green Tea Extract, and Green Coffee Bean Extract—a synergistic mix aimed at promoting fat oxidation, appetite control, and metabolic efficiency.
While results vary depending on diet and exercise, these ingredients can offer mild but meaningful support for those aiming to lose fat and maintain lean muscle.
Zero Sugar & Calorie-Conscious Formula
AminoLean is sugar-free, carb-free, and low-calorie, making it a smart choice for individuals tracking macros or looking to reduce their intake of sugary energy drinks and pre-workouts.
Its clean formulation is well-suited for fasted training, low-carb diets, or general wellness routines.
Versatile Usage Beyond the Gym
You don’t have to be lifting weights to benefit from AminoLean. Its unique formula makes it a great option for:
- Studying or desk work (improved focus)
- Cardio and endurance sessions
- Midday productivity boosts
- Travel, jet lag, or energy slumps
This versatility sets it apart from traditional pre-workouts that are strictly tied to the gym.
Great Taste with Multiple Flavor Options
With over 10 delicious flavor options, AminoLean appeals to a wide range of preferences.
Flavors like Coconut Pineapple, Blackberry Pomegranate, and Pink Lemonade offer a refreshing break from overly sweet or artificial-tasting supplements.
Many users, myself included, genuinely enjoy drinking it—which makes consistency easier.
Last update on 2025-04-20 / This article includes affiliate links/Images via Amazon Product Advertising API. I may earn commissions on purchases made through these links.
No Artificial Sweeteners or Fillers
AminoLean avoids common artificial sweeteners like sucralose or aspartame. It’s naturally flavored and colored, which adds appeal for people trying to reduce exposure to synthetic additives.
This clean-label approach aligns with modern trends in wellness and performance nutrition.
How to Use AminoLean
The recommended dosage of AminoLean depends on your fitness goals, activity level, and caffeine tolerance.
As I’ve mentioned, this supplement can be used as a pre-workout, weight management aid, or midday energy booster. Below is a breakdown of the best ways to use AminoLean for different purposes.
Dosage Recommendations
- Beginner Use: Start with 1 scoop (half a serving) to assess tolerance.
- Standard Use: Take 2 scoops (1 full serving) for a balanced energy and recovery boost.
- Maximum Use: You can take up to 6 scoops per day, but exceeding this amount is not recommended due to the caffeine content.
Important Note: To avoid caffeine overload, do not take AminoLean too close to bedtime, and always factor in other caffeine sources in your diet.
Best Times to Take AminoLean
Pre-Workout (15-30 Minutes Before Exercise)
Purpose: Boosting energy, improving endurance, and enhancing focus during workouts.
- Take 2 scoops (1 serving) mixed with 8-12 oz of water before training.
- Helps increase stamina, mental focus, and fat metabolism during exercise.
- Ideal for strength training, cardio, HIIT, or sports performance.
Tip: If you’re training in the evening, be mindful of the 125mg caffeine per serving to avoid sleep disruption.
First Thing in the Morning
Purpose: Replacing coffee or kickstarting metabolism.
- Take 1-2 scoops upon waking for a clean, jitter-free energy boost.
- Helps curb morning hunger and provides amino acids to speed up muscle recovery from previous workouts.
Midday Pick-Me-Up
Best for: Beating the afternoon slump without energy crashes.
- Take 1-2 scoops when you feel sluggish or need a productivity boost.
- Works as a healthier alternative to coffee or sugary energy drinks.
- Provides smooth energy from natural caffeine sources without artificial stimulants.
Tip: To prevent caffeine dependency or overstimulation, avoid taking AminoLean too late in the day.
Anytime for Weight Management Support
Purpose: Boosting metabolism and supporting fat loss.
- Take 1-2 scoops before a workout or between meals to support fat burning and appetite control.
- The Weight Management Blend (CLA, L-Carnitine, Green Tea, Green Coffee Bean) aids in metabolism and fat oxidation.
Tip: Combine AminoLean with a balanced diet and exercise plan for optimal weight loss results—it’s not a magic fat burner on its own.
Mixing Instructions
- Mix 1-2 scoops with 8-12 oz of cold water in a shaker bottle or glass.
- Stir or shake well until fully dissolved.
- Adjust water amount based on personal taste preference.
Tip: If you want stronger flavor and energy, use less water; if you prefer a lighter taste, add more water.
Who Should Avoid AminoLean?
Although it is one of the best supplements for weight loss and muscle building, there are some people who should avoid Amino Lean.
- If you are highly sensitive to caffeine, consider taking half a serving (1 scoop) first.
- If you train late at night, you may need a caffeine-free amino acid alternative.
- If you are a tested athlete, be aware that AminoLean is not Informed-Choice or NSF-certified.
Pros and Cons of Amino lean
Having used AminoLean on and off for over a decade, I keep coming back to it due to its effectiveness as a pre-workout and energy supplement with minimal side effects.
However, as with any supplement, it has its strengths and limitations, making it more suitable for some people than others.
Below are pros and cons of AminoLean to consider before deciding if it’s the right choice for you.
Pros
Honestly, I have a lot more good things to say about this supplement than bad.
Here are some of the primary benefits of Amino Lean that you can experience:
- Versatile usage as a pre-workout or anytime energy boost.
- Supports weight loss and muscle building.
- Great taste and variety of flavors.
- Zero sugars, suitable for those monitoring sugar intake.
AminoLean is formulated with a potent mix of amino acids and metabolism-boosting ingredients designed to fuel your workouts, improve endurance, and accelerate fat loss.
Its unique blend not only enhances energy and focus but also supports muscle recovery, making it a versatile supplement for both fitness performance and overall well-being.
Whether you’re looking to build muscle, boost your energy, or manage your weight, AminoLean has you covered.
Improved Muscle Growth & Repair
AminoLean delivers 5 grams of essential amino acids (EAAs) per serving, which is crucial for muscle repair, growth, and overall recovery (Ferrando et al., 2023).
Unlike BCAA supplements, AminoLean includes eight of thes nine essential amino acids, providing full-spectrum support to build and maintain lean muscle mass.
The formula is also enhanced with Beta-Alanine and Taurine, which help delay muscle fatigue, improve endurance, and allow you to train harder for longer periods.
Although it doesn’t contain the dosages of beta-alanine or other ingredients that have shown significant benefits in research tests, these amino acids still assist with long-term goals and provide a valuable boost.
Energy Support
AminoLean’s energy blend features natural stimulants like green tea extract and green coffee bean extract, offering a clean energy boost without the jitters or crash (Lukitasari et al., 2020).
These ingredients provide sustained energy that enhances both your workouts and daily productivity.
Additionally, they improve mental focus and cognitive function, making this an ideal choice for pre-workout or as a midday pick-me-up.
Weight Management Support
AminoLean includes a specialized weight management blend with CLA, L-Carnitine, Green Tea Extract, and Green Coffee Bean Extract, all known for their fat-burning and metabolism-enhancing properties.
CLA helps reduce body fat by increasing fat breakdown, while L-carnitine aids in fat metabolism and promotes muscle recovery.
Together, these ingredients not only support weight management but also help curb appetite and maintain lean muscle during fat loss.
Taste and Flavor Options
Amino Lean comes in 11 delicious flavors, with Coconut Pineapple being my favorite.
The variety and flavor options are definitely one of the main benefits of drinking Amino Lean. The flavors are not overly sweet, and I enjoy them.
Cons
While RSP AminoLean is one of my favorite supplements, there are a few drawbacks that might make some people hesitate before purchasing.
Lower Total Amino Acid Content
For certain training goals and budgets, AminoLean might not be the best fit. Each serving contains only 5g of amino acids, which is significantly lower than many dedicated BCAA or EAA supplements.
If you’re looking for a high-dose amino acid product for muscle recovery or intense endurance training, you may need to pair this with another supplement or increase the serving size—both of which can add to the cost.
Not Ideal for Evening Workouts (Due to Caffeine)
One of AminoLean’s biggest strengths—its natural caffeine content—can also be a drawback.
With 125mg of caffeine per serving, this supplement isn’t ideal for late-afternoon or evening workouts unless you have a high caffeine tolerance.
Taking it too late in the day could disrupt sleep quality, which is crucial for muscle recovery and overall performance.
Proprietary Weight Management Blend (Lack of Transparent Dosing)
AminoLean’s Weight Management Blend has personally helped me maintain and improve my body composition over the years, but the proprietary formula means there’s no way to know the exact amount of each ingredient in the blend.
This lack of transparency makes it difficult for individuals to assess how much of each fat-burning or metabolism-boosting ingredient they are actually getting.
Not Informed-Choice or NSF Certified
Although I’ve taken multiple WADA doping tests during my career as a professional athlete while using AminoLean—and never encountered any issues—the supplement does not carry Informed Choice or NSF certification.
This means it has not been third-party tested for banned substances, which could be a concern for professional or collegiate athletes subject to drug testing.
Final Thoughts: Should You Buy AminoLean?
After nearly a decade of using RSP AminoLean, I can confidently say it remains one of the most versatile supplements available.
Whether you’re seeking enhanced workout performance, increased energy, or weight management support, AminoLean delivers on all fronts.
Packed with essential amino acids (EAAs) for muscle recovery, natural caffeine for sustained energy, and metabolism-boosting ingredients like CLA and green tea extract, this supplement supports a wide range of fitness and wellness goals.
As a professional athlete, I value AminoLean for its clean energy boost without the jittery side effects of traditional pre-workouts.
It’s a staple in my routine for both weight training and basketball, providing a reliable source of energy and muscle recovery support.
The added bonus of being vegan-friendly, gluten-free, and devoid of artificial sweeteners makes it suitable for various dietary needs.
If you’re looking for a pre-workout supplement or an all-in-one supplement to break through fitness plateaus, enhance muscle recovery, or manage your weight, AminoLean is worth considering.
With its great taste and variety of flavor options, it’s easy to incorporate into any daily routine.
Ultimately, AminoLean has stood the test of time in my regimen, and I believe it can do the same for you.
Last update on 2025-04-20 / This article includes affiliate links/Images via Amazon Product Advertising API. I may earn commissions on purchases made through these links.
