Silymarin is extracted from Milk Thistle.
Note the reference to "dust mite extract (DPE)-induced atopic dermatitis".
One can buy milk thistle and/or silymarin from health food/supplements stores. is that part of that pill that tmmdej (or whatever her name is) is hawking?

1: Int Immunopharmacol. 2008 Jun 28.
Inhibition of atopic dermatitis by topical application of silymarin in NC/Nga mice.

Kang JS, Yoon WK, Han MH, Lee H, Lee CW, Lee...