Silver

Silver, Alchemical
A complex process involving metallurgy and alchemy can bond silver to a weapon made of steel so that it bypasses the protective damage reduction of creatures such as devils and vampires.


 * Can bypass Vampires' DR
 * Can bypass Devils' DR
 * The game doesn't have any Lycanthrope monster as of module 8.

Bows made of Silver
Unlike melee weapons (and unlike Metalline bows), bows "made of silver" do not bypass DR/Silver on foes.