A wide variety of dosage forms are available, including solid pharmaceutical forms (tablets, hard capsules, powders, and granules), semi-solid forms, and liquid forms. According to the route of administration, oral dosage forms comprise solutions, emulsions, suspensions, gels, powders, and granules. These may be presented as single-dose or pre-dosed preparations, as well as multidose formulations, which require dosing by the end user using appropriate measuring devices such as measuring cups or droppers.