Dynabolon is a very unique nandrolone ester. It is produced only in Italy and France and has a reputation of being more potent than the other nandrolones. Each ampule contains 80.5mg of nandrolone undecanoate, in 1ml. It has a shorter life in the body than Deca. Athlete's generally opt to inject this product twice weekly to keep blood levels more even.

This product does make it to the U.S. black market, but not very often.