Definition: A suspension is a biphasic liquid dosage form containing finely divided insoluble solid particles dispersed uniformly in a liquid medium. The solids are maintained in suspension by employing suitable suspending agents. Suspensions are used for oral, topical, ophthalmic, and parenteral delivery of drugs. Characteristics of Suspensions 1. Heterogeneous System: Composed of two phases—dispersed phase…
Definition An emulsion is a biphasic liquid dosage form consisting of two immiscible liquids (usually oil and water), where one liquid (dispersed phase) is finely dispersed as droplets within the other liquid (continuous phase) with the aid of an emulsifying agent. Emulsions are used for oral, topical, or parenteral applications to deliver drugs with improved…
Definition: An elixir is a clear, sweetened, hydroalcoholic liquid preparation containing one or more active pharmaceutical ingredients (APIs). Elixirs are intended for oral administration and are formulated to improve the solubility of water-insoluble drugs, mask unpleasant drug flavors, and enhance patient compliance. Characteristics of Elixirs Clarity: Elixirs are transparent due to the complete dissolution of…
Definition: Syrup is a concentrated, viscous, aqueous solution of sugar (commonly sucrose) containing one or more active pharmaceutical ingredients (APIs). It is used primarily as a liquid oral preparation for delivering drugs in a palatable and stable form. Types of Syrups Medicated Syrups: Contain active ingredients for therapeutic effects. Example: Paracetamol syrup for fever. Non-Medicated…
Definition: A solution is a homogenous liquid preparation that contains one or more active ingredients dissolved in a solvent or a mixture of solvents. These preparations are administered orally for systemic effects or locally for specific conditions in the gastrointestinal tract. Types of Oral Solutions: Simple Solutions: These contain the active ingredient(s) dissolved in a…
Capsules are solid dosage forms where medicinal agents and/or inert substances are enclosed within a small shell made of gelatin. They are mainly categorized into two types: hard gelatin capsules and soft gelatin capsules. 1. Hard Gelatin Capsules Definition: Hard gelatin capsules consist of two pieces: a body and a cap. These capsules are primarily…
Modified-release tablets represent a diverse and sophisticated category of pharmaceutical dosage forms that are meticulously designed to regulate and optimize the release characteristics of active pharmaceutical ingredients (APIs) within the body. Unlike conventional immediate-release tablets, these formulations are engineered to modify the rate, timing, and/or site of drug release, thereby improving therapeutic outcomes and minimizing…
1. Introduction to Tablets Tablets are solid dosage forms containing medicinal substances with or without suitable excipients. They are one of the most commonly used pharmaceutical formulations due to their convenience, accuracy of dosage, stability, and ease of manufacturing. 2. Types of Tablets Tablets are broadly categorized into coated and uncoated tablets based on the…
Definition: Extraction is a process of separating a substance from a mixture or matrix using a solvent. It is commonly used to isolate desired components based on their solubility, chemical properties, or physical characteristics. Classification of Extraction Extraction techniques are classified based on the phase and mechanism of the process: Solid-Liquid Extraction: Extracting compounds from…
Fluidized Bed Dryer (FBD) Principle: The fluidized bed dryer works on the principle of fluidization, where a bed of solid particles is suspended and agitated by an upward flow of hot air or gas, creating a fluid-like state. This maximizes the surface area for heat and mass transfer, leading to efficient drying. Working of Fluidized…