From The Vault

Fallout 3 consumable Dandy Boy Apples effects: +2 radiation, +10 HP addiction: none weight: 1 value: 5 base id: 8C554

Dandy Boy Apples is a food item found in Fallout 3. It can restore some of your Hit Points, but also gives you a small amount of radiation. They are found in refrigerators mostly, occasionally on shelves. Otherwise they are in some form of container. They appear inside your Tenpenny Tower Suite or Megaton House after purchasing the Pre-War Theme.