[Silymarin (milk thistle)](https://www.mskcc.org/cancer-care/integrative-medicine/herbs/milk-thistle) Look for silymarin extract products with phosphatidylcholine (silybin-phosphatidylcholine complex (Siliphos)) for maximum bio-availability [A review of the bioavailability and clinical efficacy of milk thistle phytosome: a silybin-phosphatidylcholine complex (Siliphos) - PubMed](https://pubmed.ncbi.nlm.nih.gov/16164374/) Market source: [Natural Factors Siliphos Phytosome 160 mg (60 VCaps)](https://vitasave.ca/products/natural-factors-siliphos-phytosome-160mg-60-capsules)