AminoLean is an amino acid supplement made by RSP Nutrition.

It’s designed to support both muscle gain and fat-loss.

RSP Nutrition is an American-based supplement company, founded by former student athletes.

Ingredients Label

Active Ingredients

Taurine

Taurine is an amino acid which is known for improving water and mineral uptake in muscle cells.

It’s also able to reduce muscle fatigue during exercise (1).

Essential Amino Acids

Essential amino acids (EAAs) are the amino acids that our bodies can’t create on their own.

These are usually obtained through high-protein food sources, but can also be supplemented in a more isolated form.

EAAs have been shown to significantly increase muscle growth and recovery (2).

CLA

Conjugated linoleic acid (CLA) is a fatty acid that may work well for increasing lean body mass (3).

Its effects on weight loss, however, appear to be unreliable (4).

The effective dose is 3-6g, taken with meals.

Glutamine

Glutamine is another type of amino acid that is believed to enhance muscle development.

Alongside protein or BCAA supplementation, however, it doesn’t show any extra benefits (5).

Citrulline and Arginine

Citrulline and arginine are both compounds which increase nitric oxide levels (3, 4).

Nitric oxide triggers vasodilation – a widening of the blood vessels. This can increase blood-flow and endurance.

L-Carnitine-L-Tartrate

Carnitine is an amino acid which is burns fat in those who are deficient.

The tartrate form has also been shown to increase power output (5).

The effective dose is between 1-4g.

Green Tea

Green tea contains compounds called green tea catechins, which have been shown to be very effective for improving fat oxidation (6).

An effective dose is about 500mg of green tea extract.

Green Coffee Extract

Green coffee beans contain a compound called chlorogenic acid.

Research shows that it can enhance fat-loss by blocking glucose absorption (7).

Caffeine

Caffeine is a stimulant that can increase energy levels and metabolic rate (8).

An effective dose is about 200mg.

Who Takes It?

Athletes wanting a supplement to support recovery and fat-loss may enjoy using AminoLean.

How to Take

Mix 2 scoop (7.8g) with 250mL water, and consume as desired.

Side Effects

Green coffee extract may have a minor laxative effect.

Pros

Provides energy and aids recovery
May enhance fat loss
Available in multiple flavours and tub sizes.

Cons

Very small dose of EAAs.

Conclusion

AminoLean is a great idea, which is designed to support to both muscle development and fat-loss. It falls a bit short, however, in terms of ingredient doses and effectiveness.

Doses of EAAs are hidden in a proprietary blend which is only 5 grams in total. Unfortunately, this indicates that the formula is severely under-dosed in terms of muscle-building amino acids, especially for a supplement that is meant to target this.

Fat-loss ingredients are also dosed on the low side.

AminoLean may be quite ineffective unless taken at larger serving sizes than directed on the label.