Food sanitizer (Fallout 3)

The food sanitizer is a miscellaneous item in Fallout 3 that, according to in-game dialogue, will cleanse most food in the inventory of harmful bacteria, allowing greater nutritional gain. It is awarded after completing the optional Super Duper Mart objective of the The Wasteland Survival Guide quest, given by Moira Brown along with the note sanitizer instructions.

Use and Effects
Food sanitizer has a passive effect on the player as long as it is in the player's inventory. While in the player's inventory, Food Sanitizer will increase HP value of food by 20%. The food sanitizer has no effect on the radiation rating of the food.

The food sanitizer is temporarily removed when you enter the simulation in Vault 112, when you are captured by Colonel Autumn, when you enter the Operation: Anchorage Simulator located in the Outcast Outpost, when you enter The Pitt, and when you are abducted by aliens on Mothership Zeta, along with all other non-quest items.

Fallout: New Vegas
While food sanitizers can be found in Fallout: New Vegas they do not have as wide-sweeping an effect as in Fallout 3. The food sanitizer only affects two food items found in the game: Junk Food and Bubblegum. In each case it adds a single point of health restoration when the item is used. Other than this minor effect, food sanitizers serve no real function and may be best sold for profit rather than kept.

Locations
Five food sanitizers can be found in the basement of the REPCONN Test Site. They are on the table in the room marked with "Food" signs. And the fifth can be found on the floor littered with junk after going down the stairs hidden by the floor panel.