Dictionary.com Word FAQs
Does a comma go after i.e. or e.g.?
Both abbreviations i.e. and e.g. are preceded by a mark of punctuation, usually a comma. In American English, both are generally followed by a comma, though not in British English, and are not italicized. E.g. may also be followed by a colon, depending on the construction. In British English, the term is often written as eg with the periods omitted.