What is the reason for occasional pale stools?

Let me help you: Stool comes in a range of colors. All shades of brown and even green are considered normal. Only rarely does stool color indicate a potentially serious intestinal condition. A lack of bile in stool. This may indicate a bile duct obstruction. Certain medications, such as large doses of (kaopectate, pepto-bismol) and other anti-diarrheal drugs.