Boldenone Undecylenate 250mg/ml is an anabolic steroid commonly used in veterinary medicine to improve muscle mass and appetite in livestock. In bodybuilding and athletic circles, it is used to enhance muscle growth, strength, and endurance. The steroid works by increasing protein synthesis and red blood cell production, leading to improved muscle development. Boldenone Undecylenate is typically administered via intramuscular injection, often every 2 to 4 weeks. Common side effects include acne, hair loss, and mood swings, while more serious risks can involve liver damage and cardiovascular issues. Its use in humans should be closely monitored by a healthcare provider due to potential health risks and legal concerns.