I mean the main cure is milk thistle extract, I think the penicillin is/was just thought to potentiate it slightly if you can't get silbinin intravenously. In the U.S. it's still not FDA approved, so IIRC if you get poisoned you need to somehow get to Washington DC because that's where the clinical trial is happening.

https://clinicaltrials.gov/ct2/show/NCT00915681