Is it ever acceptable to say something other than ‘amen’ when receiving Communion?

Is it ever acceptable to say something other than ‘amen’ when receiving Communion?
The General Instruction of the Roman Missal -- the "instruction book" for how Mass is to be celebrated -- does give direction on what to say when receiving Communion. The post Is it ever acceptable to say something other than ‘amen’ when receiving Communion? first appeared on OSV News.