A throwing item that makes the target NPC friendly to you. Friendly NPCs stop in place and have dialog if you talk to them. Depending on the NPC, they might join you if you meet certain requirements, or ignore you. Can be used on objects you can interact with (such as doors) and monsters, which makes them the target of nearby enemies. Works on the Demon Lord and Dosey when she turns into her wolf form.
*Sadly using Buddy Tablets on the Dark Brotherhood gatekeeper will not grant you access to the Dark Brotherhood.