Composition (% of total material) of commercial milk thistle products
| . | Silibinin (Sigma) . | Silymarin (Aldrich) . | Silymarin (Indena) . | Silymarin (Madaus) . |
|---|---|---|---|---|
| Silybin A | 46.9 | 14.8 | 13.1 | 16.0 |
| Silybin B | 49.6 | 23.3 | 21.6 | 23.8 |
| Isosilybin A | — | 4.9 | 6.6 | 6.4 |
| Isosilybin B | — | 2.1 | 3.9 | 4.4 |
| Silydianin | — | 0.8 | 9.4 | 16.7 |
| Silychristin | — | 16.5 | 15.5 | 11.6 |
| Isosilychristin | — | 0.6 | 1.5 | 2.2 |
| Taxifolin | — | 1.7 | 2.2 | 1.6 |
| . | Silibinin (Sigma) . | Silymarin (Aldrich) . | Silymarin (Indena) . | Silymarin (Madaus) . |
|---|---|---|---|---|
| Silybin A | 46.9 | 14.8 | 13.1 | 16.0 |
| Silybin B | 49.6 | 23.3 | 21.6 | 23.8 |
| Isosilybin A | — | 4.9 | 6.6 | 6.4 |
| Isosilybin B | — | 2.1 | 3.9 | 4.4 |
| Silydianin | — | 0.8 | 9.4 | 16.7 |
| Silychristin | — | 16.5 | 15.5 | 11.6 |
| Isosilychristin | — | 0.6 | 1.5 | 2.2 |
| Taxifolin | — | 1.7 | 2.2 | 1.6 |
NOTE: Note that silymarin product composition totals are <100%; each of these products are labeled as 70% to 80% silymarin with the remainder consisting of uncharacterized polyphenols and aliphatic fatty acids such as oleic and palmitic acids.