X-111 compound

X111 Compound is a consumable item in Fallout 4.

Characteristics
The X111 Compound is an anti-radiation medicine created by Senior Scribe Neriah on The Prydwen.

The player character must give Senior Scribe Neriah 20-25 blood samples in the Miscellaneous Quest Blood Bank, and then talk to her again. She will give the player character 6 X111 compounds and will inform them that if they want more they need to bring her more viable blood samples.

Locations
Only Senior Scribe Neriah can give the X111 compounds.