Gum drops restore a small amount of Hit Points and cause a similar amount radiation poisoning. While the box says "Radioactive", the gumdrops have a lower radiation count than other food items. Because of this, even a slight radiation resistance can negate this effect, rendering them harmless. Additionally, they can used to create mushroom cloud.
Gum drops are much more common in Fallout: New Vegas as opposed to their Fallout 3 counterparts, which were one of the rarest items in the game.
Effects of Survival skill[]
Level
Effect
Level
Effect
10
+1 Hit Point
60
+2 Hit Point
20
+1 Hit Point
70
+2 Hit Point
30
+1 Hit Point
80
+2 Hit Point
40
+1 Hit Point
90
+2 Hit Point
50
+2 Hit Point
100
+3 Hit Point
Note: radiation levels are not affected by the Survival skill level.
Three packs can be found inside Vault 19 in a bedroom in the living quarters, on a shelf. The shelf is over a bed.
Two can be found in the El Dorado Gas & Service, one in the display, and the other on a shelf near the door. (Sometimes one will be on the floor, instead of on the shelf.)
One pack can be found on the top shelf in the Camp Golf kitchen, but it is considered stealing to take it.
One pack can be found on the second shelf in The Gourmand kitchen, in the room where the computer terminal that locks and unlocks the freezer is. Taking them is considered stealing.
With the Dead Money add-on installed, five packets can be found in the gift shop at the northernmost tip of Puesta del Sol.
If the Courier has either gum drops or bubblegum in their inventory when talking to some of the Mini Boomers an option appears to offer radioactive candy. If chosen, this will earn you Boomersinfamy and the player will no longer be able to pass a Charisma check with that Mini Boomer for fame. If the Charisma check has already been passed this will not work, as that Mini Boomer will no longer have dialogue option.