Which antidote is specifically indicated for iron intoxication?

Deferoxamine is the specific antidote indicated for iron intoxication because it functions as a chelating agent that binds to free iron in the bloodstream, forming a complex that can be excreted by the kidneys. This action helps to reduce the toxic levels of iron in the body, mitigating the risk of damage to tissues and organs that excess iron can cause.

The other options mentioned are used for different types of heavy metal toxicity. Fomepizole is primarily used for methanol and ethylene glycol poisoning, Dimercaprol is effective against lead, arsenic, and mercury poisoning, and Penicillamine is utilized for conditions like copper toxicity and some autoimmune disorders. Hence, their mechanisms and therapeutic uses do not address iron intoxication specifically, making Deferoxamine the appropriate choice for this condition.