Boldenone is a long-acting injectable anabolic androgenic steroid and synthetic derivative of testosterone produced by CIBA. It is distinguished by the presence of a double bond between carbons at the beginning, which reduces its relative estrogenicity and androgenicity. Bodybuilders mostly utilize it as a undecylenate. Boldenone enhances nitrogen retention, protein synthesis, and hunger, and promotes erythropoietin release in the kidneys. The average dose at an initial stage is 200mg and 400mg per week and further, it can exceed up to 600mg to 1000mg. Boldenone undecylenate side effects include indications of androgenic effects such as acne, increased hair growth, voice changes, and increased hormone levels. It has significant anabolic properties, moderate androgenic properties, low estrogenic properties, and no risk of liver damage. Boldenone undecylenate is an androgen ester that acts as an active ingredient of boldenone in the body for a long time.