Three cases of cancer in which homeopathic treatment was used in a complementary role are described: A 64-year-old male with metastatic adenocarcinoma of the rectum. The patient refused surgery. He was treated constitutionally with Lycopodium. He survived nearly 3 years with no further hospitalization or other complications. A 77-year-old female with terminal squamous cell carcinoma of the cheek previously treated with radiotherapy. There was intense pain not relieved by available treatment. Calc Carb was prescribed on constitutional grounds and gave very good pain relief. A 70-year-old male with carcinoma of the larynx. He had been receiving homeopathic treatment after the diagnosis because of his faith in it. He was advised to have surgery, radiation and chemotherapy, which he underwent immediately. This treatment was followed by homeopathic constitutional treatment. Ferrum-phos was prescribed. There was a good response. The patient was symptom-free at 3 year follow-up. Homeopathic medicines prescribed on constitutional grounds may play a useful role in supportive and palliative for patients with malignant disease.