Trenbolone undecanoate

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Trenbolone Undecanoate

Chemical structure of Trenbolone Undecanoate

Trenbolone undecanoate is a synthetic anabolic steroid and a derivative of nandrolone. It is an ester of trenbolone, which is used in veterinary medicine to promote muscle growth in livestock. Trenbolone undecanoate is not approved for human use and is primarily utilized in the field of veterinary medicine.

Chemical Properties

Trenbolone undecanoate is characterized by its long undecanoate ester chain, which affects its pharmacokinetics by prolonging its half-life. This allows for less frequent dosing compared to other trenbolone esters. The chemical structure of trenbolone undecanoate is similar to that of other trenbolone esters, with the undecanoate ester attached to the 17-beta hydroxyl group of the trenbolone molecule.

Mechanism of Action

Trenbolone undecanoate acts by binding to the androgen receptor, which leads to increased protein synthesis and nitrogen retention in muscles. This results in enhanced muscle growth and strength. It also has a high affinity for the glucocorticoid receptor, which contributes to its anti-catabolic effects. The compound is known for its potent anabolic effects, which are significantly greater than those of testosterone.

Uses in Veterinary Medicine

In veterinary practice, trenbolone undecanoate is used to increase the feed efficiency and muscle mass of cattle. It is administered as an injectable solution and is part of a class of drugs known as growth promoters. The use of trenbolone undecanoate in livestock is regulated to ensure that residues do not remain in the meat consumed by humans.

Side Effects

The use of trenbolone undecanoate can lead to several side effects, particularly when used improperly. In animals, it can cause changes in behavior and reproductive issues. In humans, although not approved for use, potential side effects could include androgenic effects such as acne, hair loss, and increased aggression. Long-term use can also affect the cardiovascular system and liver function.

Legal Status

Trenbolone undecanoate is classified as a controlled substance in many countries due to its potential for abuse and side effects. It is not approved for human use and is only legally available for veterinary purposes under strict regulations.

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Contributors: Prab R. Tumpati, MD