Three grams of boldenone undecylenate sit in this 10 ml vial — Maxtreme fill it at 300 mg per millilitre, all of it behind one rubber stopper.
Boldenone is a testosterone derivative that aromatises far less readily than testosterone itself, and the undecylenate ester bound to it is long enough that blood levels move slowly in both directions — up after the first injections, down for weeks after the last. Concentrations at this level carry more solvent, and the oil is noticeably heavier to inject than a 100 or 200 mg solution.
