Gum Drops

 are a food item found in Fallout 3. It can restore some of your Hit Points and causes no Radiation poisoning, but they are very rare. Oddly enough, the box says Radioactive Gumdrops, though they give no radiation.

It actually provides radiation, but less than 1 rad per package, and so just like selling pencils that have a selling value of 0.7, they show up as zero in the bartering process.

One location where gum drops have been found is at A Quick Fix in Rivet City. They must be stolen from the shop and do not appear to be for sale in the owner's inventory.

Another location is in the Jury Street Metro Station area (see Dead Man's Signal).