https://wiki.project1999.com/Serpent_Blood_Potion
Perhaps one of the better kept remaining secrets in the game, this very easy to farm potion gives a 200 heal and 300 point rune. Wort Pots are something like 1500 plat for 2700 health. So as long as inventory space isn't a limiting factor, you may as well use these. I farmed like 80 and keep them on my WC recharger. I generally only carry 5 or so or however many I think I'll need for whatever encounter I'm doing. Basically, they're good for saving money on Worts, they're super easy to farm, the Rune aspect is interesting (stops procs but also doesn't benefit from AC?)