Gastrointestinal symptoms

Chemotherapy may affect your digestive system by causing:

• Diarrhea. Your body's ability to absorb nutrients from food and get rid of waste might be affected.
• Nausea and vomiting. Damage to your stomach and intestinal lining can also cause nausea and vomiting.
• Constipation. Though less common, constipation also can be a side effect of chemotherapy.
• Mouth sores. Damage to the cells in your mouth can create sores that make it difficult to eat and drink.