Personally, I grabbed mine from the storage area near the front desk of the Sandy Coves Convalescent Home in Salem in the NE portion of the map. Many of them can be found in or near medical facilities. To use the Syringer, first order of business is to find one. One item that may help you however is the Syringer, a new weapon that allows you to launch a syringe full of crafted material at the target of your choice, with a variety of effects to choose from. While the game offers many in-dialogue options to avoiding combat (provided your Charisma is high), there are many situations where there is no other option. Going for a kill-free run through of Fallout 4? You’ve got quite a challenge ahead of you.
