What Sustanon 250 is and what it is used for: Sustanon 250 es una solución inyectable transparente de color amarillo pálido que contiene el ingrediente activo testosterona en 4 (250 mg/ml) formas separadas. The active substances of Sustanon 250 (see section 6 “What Sustanon 250 contains”) are turned into testosterone by your body. Testosterone is a natural male hormone known as an …