A Phase I/II to Assess Safety, Tolerability and Efficacy of DL-lactic Acid Syrup in Children With Recurrent Tonsillitis

Inclusion Criteria: * Children at the ages of 5-16. * Patient is suffering from recurrent documented sore throat with at least 4 tonsillitis episodes during the preceding year (at least one verified by culture or rapid antigen testing for Streptococcus A). * Patient with clinical presentation of irregular tonsils. * Tonsils size graded between 2.5-4. * Clinical diagnosis of bacterial known in recurrent pharyngeal-tonsillitis. * Patient is willing to participate in the study and adhere to the study protocol * Patient's guardian and/or Patient have signed informed consent. Exclusion Criteria: * Clinical diagnosis of acute tonsillitis/pharyngitis caused by Streptococcus pyogenes (Positive RSAT or microbial culture). * Subjects who are known as Streptococcus pyogenes carriers * Subject's requiring any other medication (topical or systemic) that may affect the course of the disease during the study period (e.g. antibiotics, sedating antihistamines), and/or did not completed 14 days from end of antibiotics treatment. * Subjects with known hypersensitivity to lactose. * Subject is suffering from peritonsillar abscess. * Subject suffers from an active peptic ulcer * Subjects who are suffering from any concomitant disease which in the judgment of the investigator will interfere with the conduct or interpretation of the study results. * Subject is currently participating in another clinical study.