So what is ExtenZe? It is actually a natural-based high quality virility supplement for men. ExtenZe is a proprietary blend of natural herbs formulated by a leading sexual health professional, designed to promote sexual performance, pleasure and increased erection size for men. The reason it’s so effective is that when you take ExtenZe, significantly more blood rushes to the three erectile chambers of the penis. This increased volume means a bigger and harder erection. It is a great product for men but it is also advisable that before buying or takng this product you will consult your physician if you have illness history.