Jesus,

It would be much easier to answer your question if you provide the structure and the transformation you are going to achieve.

In general though, I think that the catalytic hydrogenation (H2/Raney-Ni or H2/Pd) would preferably reduce the double bond rather than the nitrile group; at the same time, reagents like LiAlH4 will be more selective in reducing nitriles to primary amines.

Good luck !

Generally double bond hydrogenation is easier than nitrile hydrogenation.@