Milk thistle (Silybum marianum) is used in pet foods as a hepatoprotective, antioxidant and anti-inflammatory botanical ingredient. Active ingredient complex silymarin (silibinin, silidianin, silychristin) stabilizes the membrane of liver cells, increases glutathione synthesis and stimulates hepatocyte regeneration. It is one of the most researched herbal treatments in veterinary hepatology.
| Scientific Name | Silybum marianum |
| Active Ingredient | Silymarin (50-70% of silibinin) |
| Resource Type | Herbal (Daisy family) |
| Function | Hepatoprotective / Antioxidant / Anti-inflammatory |
| Mechanism of Effect | Membrane stabilization, glutathione ↑, NF-κB ↓ |
| Therapeutic Dose (dog) | 20-50 mg/kg/day silymarin (veterinary) |
| Discussion Level | low |
thistle, It is one of the herbal ingredients with the strongest evidence in veterinary hepatology.. It is valuable in supportive treatment in liver diseases. It is questionable whether the dose in the formula reaches the therapeutic effect, but it has a protective contribution.
Why Added?
- Hepatoprotective: Stabilizes the liver cell membrane and prevents the entry of toxins
- Glutathione increase: Increases endogenous antioxidant glutathione synthesis by up to 35%
- Regeneration: Supports liver repair by stimulating hepatocyte division
- Antioxidant: Free radical scavenging effect reduces lipid peroxidation
Dosage and Bioavailability
Oral bioavailability of silymarin is low (20-50%). For therapeutic effect, it must be taken in sufficient dosage and in a form with increased bioavailability (phospholipid complex - silybin-phosphatidylcholine). The amount of milk thistle in the food is usually below the therapeutic dose; In animals with liver disease, preparations prescribed by a veterinarian should be preferred. Rarely, GI side effects (diarrhea, nausea) may occur.
Frequently Asked Questions
Does milk thistle treat liver disease?
Milk thistle alone does not cure liver disease, but is valuable in supportive treatment. Intravenous silibinin may be lifesaving in Amanita (poisonous mushroom) poisoning. In chronic hepatitis, oral silymarin may lower liver enzymes and promote histological healing. However, treatment of the underlying cause is essential.
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Bibliography
- Webster, C.R.L. & Cooper, J. (2009). Therapeutic use of cytoprotective agents in canine and feline hepatobiliary disease. Veterinary Clinics of North America: Small Animal Practice, 39(3), 631-652.
- NRC (National Research Council). (2006). Nutrient Requirements of Dogs and Cats. National Academies Press.