My father age 80 yrs is suffering from kidney problem. He's nt eating since 4 months. Only surviving on liquid foods so becoming very weak. Suffering from Also high bp. Lungs liver kidney and heart to not function ing well. Urine and stools are not passing. Endoscopy results are not good found some abnormalities. Kidney problem reached to 4 point. Medicine given by doctors- dytor-10,isosorbride mononitrate,cardipin regard,czopress-co 2.5,metapro-xl 25,idiot 20,omeprazole,plagerine,ciploric 100. He's not eating anything. Plz advice some diet and other precautions.can I give B protein powder pomegranate juice in diet.