1. Suspension is usually applicable for a drug that is insoluble or poorly soluble e.g. Prednisolone syrup.
2. To prevent degradation of the drug or to remove
stability of the drug e.g. Oxytetracycline suspension.
3. To mask the bitter drug. e.g. Chloramphenicol
palmitate.
4. Topical application e.g. Calamine lotion is
used.
5. Parenteral applications for control rate of drug
absorption e.g. Penicillin procaine.
6. Vaccine as an immunizing agent e.g. Cholera
vaccines.
7. X-ray contrast agent e.g. Barium Sulfate for
examining the alimentary canal.