Step 5: Don't Toxify the Detoxifier 

Vitamin A can cause fat storage in the liver, chronic hepatitis and cirrhosis. Patients with chronic liver disease should consume less than 2,500 IU of vitamin A per day in pill form. Getting vitamin A through food seems okay. A list of other nutrients and supplements that have been shown to have toxic effects on the liver:

• Nicotinic acid (niacin; Nicolar)
• Pennyroyal oil
• Senna fruit extracts
• Valerian
• Iron
• Mistletoe
  
  From YOU: The Owner's Manual: Updated and Expanded Edition
  
  Get to know your liver