Playing Lennus 2, I defeated Bejould (one of the 4 major late-game bosses) without using any medicine bottles.
Sexy Dress + Revive is fun!
For those not familiar with this game, which is probably most of you:
Sexy Dress: Kills caster, restores 75% of everybody else's HP. Since it's an item, costs nothing (other than the caster's life) to use. (Of course, the spell it mimics has a 0 HP cost, but that's beside the point.)
Revive: Once you've maxed out (or nearly maxed out) the character's Water skill, if used on a dead character, will revive at full HP. Costs 80 HP to use (the most of any spell), but that's minor when characters can easily have over 3,000 HP, and restoring HP is not difficult (especially with the item mentioned above).
I am wondering if the Martyr spell (which the Sexy Dress mimics) eventually gets the ability to revive; my main character can, if set to the required spirits, can heal 100% with Martyr, and his Void skill is nowhere even close to being maxed out.
I note that Phantasy Star 3 has a similar healing strategy, which one FAQ calls "Ultra Gires", but it's less reliable because both Rever (revive) and Nasak (sacrifice heal) can fail in that game. (Hint: Force Vest gives you infinite free Rever, while Royal Vest gives you infinite free reliable (I haven't seen it fail) Nasak.)