There are few ways through which you can get rid of interview fears
1. Take interviews as discussions. As its a common platform for interviewer and as well as interviewee to understand the role and suitability of the person for the same. Stop taking interviews as one sided evaluations.
2. Make a list of all possible questions and practice mock interviews with your friends and also in front of the mirror.
3. Do you homework about the company. Try to know its market position, products and competitors.
4. Initial moments of the interview are the most difficult to handle. Once you are able to retain your calm during that time, it will be comparatively easier for you to sail through the rest of the interview.