Hi Welcome to Hcm I have gone though your qery . Your fether in law s sufferings , inspite of being in remission is a matter of great concern . I as a Homeopath , Naturopath and Magneto Therapist would like to help you in this . These are no nonsense having no side effects and potent tools for recovery & prevention You can administer him Homeopathic Carcinocin 200 . one dose every fortnight, i Ars nic 30 Is wonderful remedy to relieve , tiredness ,swelling. Take 4 drops in 1/2 cup of water . Make 3 doses ,each dose half hourly . administer him some supplements rich in antioxidents which add to enhance power of metabolism and strengthen immune system to help him early recovery and assure stopping reccurance.... 1. Give high fiber diets including all essential nutrients ,directly , as it reduce the risk of colon or any cancer, a fiber-rich diet can decrease and eliminate constipation and hemorrhoids, it helps the stool pass through easily and decreases the burden of toxins reabsorbed into the body.Avoid fried fast food ,tea coffee , alcohol and smoking . 2. give Mixture of extract of lemon , garlic , ginger , mooringa tree bark( sehjan tree) , vinegar of coconut water and honey . 25 -35 ml is the dose with equal water for 3 -4 days twice 1/2 hour before meals, and after that , pure mixture for 25 - 35 days as required , is great antioxidant and rejuvinating ,preventive and curative drink . 3. Bitter gourd has astounding health benefits. A study published in the scientific journal Carcinogenesis has shown that bitter gourd juice restricts the ability of pancreatic cancer cells to metabolize glucose, and in the process cuts off the cancer’s energy source, effectively killing them. dose is 20-25 ml empty stomach . 4. Turmeric powder 1 t spoon with a cup of hot milk before B/F and at bed time . kills all kind of bacterias on mass bases 5. Buttermilk in lunch gives strength and helps digestion ,with a pinch of black salt and long pepper . 6. Do Exercise ,Walk , Yoga , Pranayam - Deep Breathing , according to the capacity of the patient . 7. Clearing of bowel should be Regular. 8. Mental tention ,worry anger should be avoided as it hempers healing process . 9. proper Rest ,sond sleep helps in early recovery 10. If you wish and have facility of service of Magneto Therapist ,this also a encouraging way of treatment . It complements and accelerate the recovery of the patient by destroy the bacteria on mass basis , goes with any therapy and has no side effects . If this regimen regularly followed & made part of life , It assures happy , healthy and disease free life ahead . Hope this helps you solve your query .If have any doubt on any point , Mail at drsuchda@gmail.com Take Care .All the best .Wish him early recovery . Don t hesitate to get back if have any further query