What is Clenbuterol?

Clenbuterol is a sympathomimetic amine, initially developed for the treatment of asthma and other respiratory disorders due to its bronchodilating properties. It is a selective beta-2 adrenergic receptor agonist, which means it can stimulate specific receptors in the body, mainly in the airways and the central nervous system. Over the years, Clenbuterol has attracted interest from various fields, including sports and bodybuilding, for its potential effects on weight loss, muscle growth, and performance enhancement. In this article, we will take an in-depth look at how an 80 mcg dose of Clenbuterol can impact basal metabolic rate, fatty acid oxidation, and anabolic stimulation.

Effects of Clenbuterol on Basal Metabolic Rate

The basal metabolic rate (BMR) refers to the amount of energy our body uses at rest to maintain vital functions. A 2008 study showed that an 80 mcg dose of Clenbuterol increases BMR by 21%. This increase in BMR is attributed to Clenbuterol's ability to stimulate beta-adrenergic receptors, which in turn increases heat production in the body and, consequently, energy expenditure.

Fatty Acid Oxidation and Increase in NEFA

Clenbuterol has also been shown to be effective in increasing fatty acid oxidation by 39%. Fatty acid oxidation is the process by which fatty acids are broken down to generate energy. This increase in fatty acid oxidation implies a higher utilization of stored body fat as an energy source. Additionally, Clenbuterol increases the levels of non-esterified fatty acids (NEFA) by 180%. NEFAs are fatty acids released into the blood that can be used as an energy source by muscles and other tissues.

Anabolic Stimulation and Activation of mTORC1

One of the lesser-known properties of Clenbuterol is its ability to stimulate muscle growth through the activation of the mTORC1 pathway. The mTORC1 (mammalian target of rapamycin complex 1) pathway is a key cellular route that regulates cell growth and proliferation. A 2012 study showed that an 80 mcg dose of Clenbuterol has a potent anabolic effect mediated by mTORC1.
This anabolic effect may be of interest to athletes and bodybuilders looking to increase their muscle mass and improve their performance.


Clenbuterol is a compound with multiple effects on the body, including increasing BMR, fatty acid oxidation, and anabolic stimulation mediated by mTORC1.