With options like Triple + Curaga and the commands like Recover and Restore, there's never really a need to use Megalixir except to make life easier, much like a Holy War.
And Holy Wars have the tendency to run out when you least expect it!
Temporary invincibility can be more unstable than instant full health.
--
http://i498.photobucket.com/albums/rr345/Rakaputra/pjbasis.png
SuperNiceDog - 1, pjbasis - 0