Hello Akshitha Garu, We have very effective medicines to treat your father problem of pernicious anemia. It is a condition where the  production of red blood cells in  the bone marrow is reduced due to lack of vitaminB12. It occurs when body is unable to absorb vitaminB12. The cause might be Gastrointestinal, drugs, infections, nutrition deficiency,etc..The person may experience some symptoms like tired easily, tingling and numbness in hands ,feet, confusion, imbalance, headaches, breathlessness, bleeding gums etc…May i know do you have any reports regarding this problem ??? homeopathy have effective medicines but you need to take treatment definitely. For more detailed information contact us on : 9515869820