Iguana bits (Fallout 3)

Iguana bits are an aid item $$

Gameplay
Iguana bits restore 5 Hit Points at the expense of increasing one's Radiation count by 3.

Locations

 * They are commonly found on dinner plates in homes all across the wasteland.
 * Can often be bought from food vendors, even traders that deal in misc. goods, like Moira Brown and Seagrave Holmes, sell them.
 * Talon Company mercs, Regulators, Raiders, and Wastelanders sometimes have it in their inventory.