My dad is suffering from colon cancer with liver metastatis,he has taken 18 chemo sessions,he is having fever since last 1 month on and off..his haemoglobin is 9,WBC is 12,500,ESR 92 and lactate dehydrogenase is 3033..he is asked to take 5 mg of folvite for low haemoglobin..please guide us..