Industrial pharmacy1 (unit1) hand written notes pdf

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Preformulation study is an essential step in the drug development process that includes a series of studies to assess a drug candidate’s physical, chemical, and biopharmaceutical properties. This study aims to evaluate the feasibility and stability of the drug candidate and ensure that it can be formulated into a safe, effective, and stable dosage form.

The preformulation study typically involves the following steps:

1. Identification of physicochemical properties: The drug candidate’s chemical structure, solubility, pH, partition coefficient, stability, and other properties are identified.

2. Formulation screening: The drug candidate is screened with various excipients to evaluate its compatibility with them and determine the best formulation for drug delivery.

3. Solid-state characterization: This includes analyzing the drug’s crystallinity, polymorphism, and particle size to determine its physical stability and bioavailability.

4. Compatibility studies: The drug candidate is tested for compatibility with packaging materials, storage conditions, and other variables that could potentially influence its stability.

5. Biopharmaceutical evaluation: The study evaluates the absorption, distribution, metabolism, and excretion characteristics of the drug candidate to determine its pharmacokinetics and bioavailability.

6. Toxicity assessment: The preformulation study assesses the toxicity of the drug candidate by identifying any potential toxic elements and their effects on the body.

Overall, preformulation studies provide critical information that helps researchers select the right drug candidate and optimize its formulation for safe, effective delivery to patients.