Milk Thistle extract(Silymarin) has been restricted in the EU by big pharma because they believe it will affect their drug sales. They have declared it as having medicinal properties which means that they can restrict it under the THMPD. I did not vote for Brexit because of immigration, I voted for Brexit because of Big Pharma's influence inside the EU. Hopefully the THMPD will be repealed and access to Silymarin will be allowed in the UK once we finally leave. I stick my two fingers up Big Pharmas Ass!
I suggest you investigate what they did to get THMPD passed into EU law, it cost hundreds of people their lives and the EU covered it all up, "investigated" behind closed doors and found no one liable. The Pharma companies laced herbal products which they manufactured with toxins which caused kidney failure in hundreds of people. Chances are that they will try something similar in the US.