Boldenone Undecylenate 400 mg/mL is a high-concentration injectable formulation designed to provide gradual and sustained release of the active compound. The undecylenate ester modifies the release characteristics of boldenone, contributing to prolonged availability following administration.

Boldenone interacts with androgen receptors and influences gene transcription associated with protein metabolism, nitrogen balance, and anabolic biological processes. The 400 mg/mL concentration provides a reduced formulation volume compared with lower-strength presentations containing an equivalent total amount of active ingredient.