[teknix (OP)]

I was wondering if there are any known health risks associated with ingestion of the prussian blue to prevent radiation contamination?

How is the effect different from using Iodide?

What is the safest way to self administer radiation treatement and which substance?

[Bored chemist]

Unless you have actually been contaminated with radioactive caesium (prussian blue) or radioactive iodine (Iodide), there's absolutely no point taking them.
They are not very toxic, but why bother?

[teknix (OP)]

Just seemed like useful information. Better to have it and not need it than it is to not have it and need it.