Recommended frequency of injection
Nandrolone Phenylpropionate (NPP)
Durabolin
Dubol-100
This is very similar to Deca-Durabolin, but because of the ester attached (phenylpropionate), it gets into the blood very quickly and only remains active for 3-4 days. You can get away with injecting it E3D or E4D to achieve stable blood levels of the compound. Some bodybuilders prefer to inject it ED or EOD, but that's not absolutely necessary.