Formulations can be categorized based on the route of administration and the physical state of the product: 1. Oral Formulations: Tablets, capsules, syrups, and suspensions. 2. Parenteral Formulations: Injections and infusions. 3. Topical Formulations: Creams, ointments, and gels. 4. Inhalation Formulations: Aerosols and dry powders. 5. Transdermal Formulations: Patches and films.
