Learning Objective

• Formulations that are available in suspension form

1. Oral suspensions: Examples of oral suspensions include
   • antacid suspensions—magnesium hydroxide mixture, such as Gelusil and Digene (both contain a combination of magnesium hydroxide and aluminum hydroxide)
   • pediatric paracetemol oral suspension
   • chloramphenicol (antibiotic suspension)
   •  amoxicillin and potassium clavulanate suspension (reconstituted)
   • magnesium hydroxide mixture—laxative.
2. Suspensions for topical administration: An example of this type of suspension is calamine lotion.
3. Suspensions for parenteral use and inhalation therapy: Examples include
   • cholera vaccine—dispersions of killed microorganisms
   •  adsorbed diphtheria and tetanus vaccine—constituent toxoids are adsorbed to a substrate of aluminum hydroxide or phosphate. Thus, a prolonged antigenic stimulus is provided, resulting in a high antibody titer.