This thesis is a concise overview of the development and production of mini-tablets, multiparticulate oral drug delivery systems. Pharmaceutical industry has recently put more effort in development of new dosage forms that use already existing active pharmaceutical ingredients to develop a more efficient and higher quality drug product. Multiple unit dosage forms such as pellets, granules and mini-tablets when compared with conventional single unit dosage forms like tablets and capsules own more flexibility in their use, reduced frequency of dosing and increased effectiveness of the drug. These days the most popular multiple unit dosage forms are modified drug release systems. Among all multiple unit dosage forms, mini-tablets arise in several segments when compared to others. Because of that, the interest in mini-tabs technology grows for the last few decades. There are about twenty commercially available mini-tab products and due to their great properties, there is an effort to increase their number. Mini-tablets are manufactured using a well-known and established tableting technique with some inevitable modifications. They are coated in the same way as conventional tablets so it is not necessary to invest a lot in coating technique. They can be filled into capsules or compressed into tablets. They are also a convenient dosage form for all ages, even for children and elderly people for whom the dosage form is a limiting factor in drug selection.