Very close to Zhelejov is an interesting site named ‘Nameless Spring’ - no enemies around.

There’s a basket with Belladonna and Herb Paris, but all around the big rock is a bunch of Belladonna (and right next to the basket a ton of Herb Paris if you need some more ;)) to harvest as well. I walked away with 65 Belladonna in total, and I’m sure I missed some.

Go on, chug those potions and save to your heart’s content!