| ||For the Rad-X that appear in the Fallout series, see Rad-X.|
Rad-X significantly increases your Radiation Resistance for a limited period of time.”— Loading screen hint
Each dose increases radiation resistance by 100 for a duration (the effect can be stacked).
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|Boston mayoral shelter|| Four behind the security gate in the corridor after exiting the lift from the top floor.|
Three behind the maglock door in the rom with the Master locked terminal
|Fort Hagen Command Center|| Three in the armory, accessible via the Master locked terminal.|
Two in the infirmary ward, directly opposite the canteen.
|Med-Tek Research|| One in the room containing the nuclear reactor.|
One in the storage room in the ground floor office to the right, past the decontamination arches. There is a second Rad-x on the counter in the room directly opposite.
One in the room below the offices on the top floor, accessible via a ramp created by the collapsed floor.
|Mass Fusion Main Reactor||4|
|Lexington Pharmacy||On a shelf in the east corner of the pharmacy.||2|
|Doctor Sun's house||In a cabinet located in the back of the house next to a Bed.||2|
|Old State House||2|
|Sunshine Tidings co-op||2|
|Big John's salvage.||2|
|Charles View Amphitheater||2|
|Nuka-World (add-on) Nuka-Cade||Sold as a prize for 2000 Nuka-Cade tickets (items rotate every couple of days)||random|
- Rad-X can be stacked. Each subsequent Rad-X that the Sole Survivor consumes will improve the Radiation Resistance with a further 100 points.
- Taking Rad-X does not count as an affinity action as it can not cause addiction to the player, therefore not being checked as a chem, but rather as a healing item. Note that this does not apply to Med-X however.