Issues with Macroing Mega-Potions

For whatever reason, I can't seem to get any variation of my item macro to work for Mega-Potion. So far I have tried:

• /item "Mega-Potion" <me>
• /item Mega-Potion <me>
• /item Mega-Potion
• /item "Mega-Potion"
• and then numerous other idiotic variations

All of these return some variation of "The command /item Mega-Potion <me> does not exist."


I also scrubbed the entire internet to see if there was some work-around or if this was a known thing, but couldn't find anything.