Silymarin (Legalon, Siliphos, various generic formulations)
Other Medications
Description
Silymarin is a standardized extract derived from milk thistle (Silybum marianum) seeds that functions as a hepatoprotective and antioxidant agent. In colorectal cancer treatment, silymarin serves as adjuvant supportive therapy to protect against chemotherapy-induced liver toxicity and potentially enhance treatment outcomes. It is specifically used alongside FOLFIRI chemotherapy regimens to reduce hepatic side effects and may provide additional anti-cancer properties through its flavonoid compounds.
Mechanism of Action
Silymarin exerts its effects primarily through antioxidant mechanisms, scavenging free radicals and stabilizing hepatocyte cell membranes to prevent liver damage from cytotoxic chemotherapy agents. The active flavonoid components, particularly silybin, inhibit lipid peroxidation and may modulate apoptotic pathways including BCL2-related proteins. Additionally, silymarin demonstrates anti-inflammatory properties by inhibiting nuclear factor-kappa B (NF- B) signaling pathways.
Molecular Targets
Side Effects
Not all side effects are listed. Side effects vary by individual. Always consult your oncologist.
Clinical Trials
Quick Info
| Brand Name | Legalon, Siliphos, various generic formulations |
| Category | Other Medications |
 Status | Off-label |
 EMA Status | Not submitted to EMA |
| Administration | Oral |
| Clinical Trials | 2 |
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Medical Disclaimer
This information is for educational purposes only and should not replace professional medical advice. Always consult your healthcare team before making treatment decisions.