A distinctive combination of "epic" and "elixir", meaning "a magical or medicinal potion".
The name "epixir" has only six letters and three syllables. Three syllable names are used by established brands like Vodafone, Adobe and Sainsbury's.
Epixir.com is a dot com domain. Dot com domains are the most valuable top-level-domain in the world, famously used by websites like google.com. When you own a dot com, it is much easier to rank for your own name in search engines.