Oral and parenteral suspensions, in addition to the regular suspension products may also be prepared as dry powders for reconstitution with water prior to dispensing. This minimizes the rate of drug degradation in aqueous media. Topical suspensions can be liquid preparations (e.g., lotions) or semisolid (e.g., pastes). Parenteral preparations can be formulated in an oily vehicle to sustain drug release.At present, many drug formulations are available as suspensions. Some therapeutic classes of drug formulations are mentioned below:• Oral antacid suspensions• Oral antibacterial suspensions• Oral analgesic suspensions• Oral anthelmintic suspensions• Oral anticonvulsant suspensions• Oral antifungal suspensions• Dry antibiotic powders for oral suspensions• Intramuscular antidiarrheal suspensions• Intravenous anticancer suspensions• Intramuscular contraceptive suspensions• Topical lotions for various skin conditions
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