INTRODUCTIONS: Childhood mortality and morbidity is high due to infectious diseases. The burden of infectious diseases in pediatrics has been reduced primarily due to immunization. Studies show evidence regarding misconceptions on parents’ knowledge and negative attitudes towards childhood immunization. This study aims at promoting childhood immunization by improving the parent’s knowledge on immunization. OBJECTIVES:  The objectives were to understand the knowledge level of parents on immunization, educate them regarding the same and post-counseling, assess the impact of education on immunization. METHODS:  The study was divided into pre and post-intervention phases. In the pre-intervention phase, the parent completed a quantifiable pre-validated questionnaire after which the parent about importance of immunization and also by providing patient information leaflet. In the post-intervention phase, parents completed the post-intervention questionnaire and both pre and post intervention questionnaires were quantified and interpreted. RESULTS:  150 children were enrolled in the study, of whom 81(54%) were female babies. 115 mothers and 35 fathers attended the counseling session. 78 (52%) were working, 50 (33.3%) non-working and 22 (14.7%) did not reveal their working status. The commonly observed ADRs were fever alone (33%) and fever with swelling (17.2%). In most children (62 of 150 [41%]) no ADRs were observed. Most of the parents in pre-intervention phase, got the score of 3-6 (which is considered as low knowledge as per the questionnaire scoring and in the post-intervention phase, 9-10 (which is considered good knowledge). Comparison of pre and post-intervention scores showed that parents’ knowledge got improved after counseling by the clinical pharmacist. CONCLUSIONS:  From our study, a significant difference was observed in the pre and post-intervention scores. This study recommends the inclusion of clinical pharmacist in the national immunization program as counselor who certainly will be helpful in imparting education on immunization to parents which improves the national immunization rates. Key words: Counseling, Immunization, Pediatrics, Vaccination