A man has spoken out after "diabetes here I come" was reportedly written on his white chocolate mocha.

The unnamed man purchased a grande white mocha from a branch in Florida yesterday morning and claimed he found a label on it with the printed message.

He said to American station Action News Jax he was "taken aback" by the comments because he has two sisters who suffer from diabetes.

The man decided to hit out at the person who said he was going to get diabetes by scrawling on the note: "Two of my sisters are diabetic, so... not funny."