Gaining a greater health from Potions?

The info funkydisco gave you is right but also false.

Edit: He probably means special effect $48 is item extra effect $00. I had no knowledge of that.

Well, my first post was massively embarrassing.

Yes, I screwed up the order of the bytes.

And I did mean that special effect $48 == item extra effect $00.

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Even then, I did plan for other items to heal 500 hp soo...

I now have discovered a solution for healing on the menus.

Since it seems you're looking for healing of 50*power, do this...

C3/8CDD: A9 20
C3/8CE2: A9 03

This changes the behavior of the flag FF3usME calls "Max out". Instead of causing items with this flag to heal for power/16*maximum health, it will heal for power*50 instead.

You'll have to change the power of X-Potions (and other full-heal items) to 200 so that it heals for 9999, though.

Edit: Nevermind, this will screw up the potions in-battle.