Save for one scene, none of the violence is graphic or intense. Most of the violence happens offscreen.

One of Dracula's coffin's contains a partially rotted corpse.

Renfield cuts his finger. (There is some blood.)

Dracula bites Renfield. (off screen)

Dracula kills everyone aboard their boat on the way to England. (implied, not shown)

Dracula kills a young woman. (offscreen)

Dracula hypnotizes a maid against her will.

Dracula bites Lucy (offscreen)

Dracula bites Mina (offscreen)

Lucy attacks a young girl. (heard, not shown)

Dracula hypnotizes Briggs against her will.

Dracula kills Renfield (offscreen), although his dead body being thrown down the stairs is shown.

One instance each of tobacco smoking and alcohol consumption.

Mina mentions that Dracula opens a vein in his arm and forces her to drink it. This statement can be somewhat frightening (in the 30s standards.)