Wort pots are the
de facto healing potion for tanks. However, I recently found out about this little gem...
https://wiki.project1999.com/Serpent_Blood_Potion
200 HP heal + 300 damage rune. They don't stack and therefore take up more inventory space, but they can still be spammed. They're also super easy to farm, as Squallslither spawns frequently and drops his potion roughly 50% of the time.