Introduction. Pediatric and elderly patients often demonstrate difficulty in swallowing tablets and capsules because the diameter and/or reject liquid formulations particularly those with bitter taste. The pharmaceutical adjuvants or excipients are substances found in different therapeutic systems which function is to facilitate the compliance of the final dosage form conferring different and relevant properties and characteristics to those drugs. The flavorings are excipients used in formulations to give a distinctive flavor to a food or drug which has a bad taste. Among the forms of masking bitter tastes, the microencapsulation technology, used in the pharmaceutical industry and micro coating technique, used in compounding pharmacy, help to mask unpleasant tastes and odors allowing an increase in the compliance to the treatment. Objective. The aim of this study was to review the literature regarding the masking techniques of oral preparations and to develop experimentally a micro coating technique in compounding scale applied to the Clarithromycin. This is an antibacterial drug with bitter taste usually prescribed in liquid dosage form for oral use. Therefore it was chosen as model drug for the development of this study. Methodology. It was developed in the laboratory a method for micro coating of Clarithromycin and subsequently performed quality control analysis of the product before and after micro coating in order to check the viability and yield of the method. Results. The Clarithromycin micro coated by crystallization method showed an assay of 99,76% and this result was in accordance to the specifications described in the Brazilian Pharmacopoeia 5th edition (2010). Conclusion. It was possible to develop an effective method of micro coating for Clarithromycin without any interaction between the components of the formulation and the drug. It is worth noting the importance of reproducing this method in future experiments, so that a statistical analysis of the quality control results can be performed and the reproducibility of this method evaluated.