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Clenbuterol

Updated: 2026-08-11

Overview

Clenbuterol is a synthetic compound classified as a beta-2 adrenergic agonist. Originally developed for treating respiratory conditions in animals, it has gained notoriety for its misuse in livestock and sports. Its ability to act as a bronchodilator and promote lean muscle growth has led to both therapeutic and controversial applications. In veterinary medicine, clenbuterol is primarily used to manage asthma and other respiratory disorders in horses and cattle. However, its off-label use to enhance muscle growth in livestock has resulted in regulatory restrictions in many countries due to potential health risks to consumers.

Physical and Chemical Properties

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Clenbuterol appears as a white crystalline powder with a molecular weight of 277.19 g/mol. It is soluble in water and ethanol, making it suitable for various formulations. The compound has a melting point of approximately 174-176°C, indicating moderate thermal stability. As a beta-2 adrenergic agonist, clenbuterol binds to beta-2 receptors, triggering a cascade of physiological effects. These include bronchodilation, increased metabolic rate, and thermogenesis. Its chemical structure includes a dichlorophenyl group, which contributes to its potency and selectivity.

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Main Applications

The primary application of clenbuterol is in veterinary medicine, where it is used to treat respiratory conditions like asthma in horses and cattle. Its bronchodilatory effects help alleviate breathing difficulties, improving animal health and productivity. Clenbuterol has also been misused as a growth promoter in livestock due to its ability to reduce fat and increase muscle mass. However, this practice is banned in many countries due to residual effects in meat, which can pose health risks to humans. Additionally, it has been controversially used in athletics for its performance-enhancing properties, though this is prohibited by most sports organizations.

Safety and Storage

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Clenbuterol is a potent compound with significant safety concerns. In humans, it can cause adverse effects such as tachycardia, hypertension, muscle tremors, and electrolyte imbalances. Prolonged use or overdose can lead to serious cardiovascular complications. Proper storage is essential to maintain its stability. Clenbuterol should be kept in a cool, dry place, away from light and moisture. Containers should be tightly sealed to prevent contamination or degradation. Handling should follow standard safety protocols, including the use of personal protective equipment.

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B2B Procurement Guide

When procuring clenbuterol for B2B purposes, compliance with local and international regulations is paramount. Buyers must verify that suppliers are licensed and provide certificates of analysis to confirm purity and authenticity. Due to its regulated status, procurement channels may be restricted. It is advisable to work with reputable suppliers who specialize in veterinary pharmaceuticals. Pricing can vary significantly based on market demand, purity, and quantity, so obtaining multiple quotes is recommended. Always ensure that end-use complies with legal requirements to avoid penalties.

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