Mysterious serum

The mysterious serum is a consumable item in Fallout 4.

Background
The serum is derived from the blood of Lorenzo Cabot, father of Jack Cabot. It halts aging, and in its undiluted form, gives the user incredible strength. It is through this serum that each family member has lived over 400 years. Emogene Cabot is the only one who realizes this, as she once went a whole month without a dose but ultimately couldn't stop.

Jack mentions that the serum is diluted before the family uses it, and the serum one receives from the raiders and Lorenzo is the undiluted form. Jack explains that while the diluted serum halts aging, the undiluted serum also provides increased strength and damage resistance.

Gameplay
A Radiation effect of -36000 means it removes 10 rads per second for 3600 seconds (60 minutes or one hour). In Survival mode the serum is affected by Immunodeficiency. It cannot be used to recover from Mole rat disease.

Locations

 * One at Parsons Creamery during Special Delivery. The player character can keep it by passing a speech check with Jack Cabot.
 * One in Parsons State Insane Asylum, on the ground next to a raider immediately inside the main entrance.
 * Four in Parsons State Insane Asylum, on the raider Lefty in the room containing Lorenzo's cell.
 * Three in Parsons State Insane Asylum, on a surgical tray on a table in the room containing Lorenzo's cell.
 * Rarely found on raiders in Parsons State Insane Asylum, who must be killed before they use the serum in order to take it from their corpse.
 * One given by Lorenzo if the player character sides with him to the end of The Secret of Cabot House. This can be renewed if the player character has none left in their inventory. See details in the Characteristics section above.