Mix onion juice 15 ml with 15 ml mustard oil. make the person who is bitten drink this. This is one dose. Take 2 more doses like this , each after a gap of 30 minutes from the earlier dose. This removes the poison. onions are very important for health. Onion is a daily must have which helps you stay away from many infections and diseases. If you are sick and you are looking for a quick heal medicine, then onions are your best option.