Standard Operating Procedure for Formulation Development for Granules

1) Purpose

The purpose of this SOP is to outline the procedures for the formulation development of granules in the pharmaceutical industry to ensure consistency, efficacy, and compliance with regulatory standards.

2) Scope

This SOP applies to all personnel involved in the formulation development of granules within the pharmaceutical research and development (R&D) and production departments.

3) Responsibilities

Research and Development (R&D) Department: Responsible for designing, testing, and optimizing granule formulations.
Quality Control (QC) Department: Responsible for analyzing and validating formulation samples.
Production Department: Responsible for scaling up formulations and ensuring manufacturability.

4) Procedure

1. Initial Formulation Design:
   1. Identify the active pharmaceutical ingredients (APIs) and excipients based on desired properties and regulatory guidelines.
   2. Develop preliminary formulations and document all components and their proportions.
2. Pre-formulation Studies:
   1. Conduct physical and chemical compatibility studies between APIs and excipients.
   2. Evaluate critical properties such as particle size, flowability, and moisture content.
3. Formulation Optimization:
   1. Prepare multiple batches with varying proportions of excipients to optimize the formulation.
   2. Perform in-process testing to evaluate key parameters such as granule size distribution and hardness.
4. Stability Studies:
   1. Conduct accelerated and long-term stability studies to ensure the formulation remains stable under specified conditions.
   2. Analyze stability samples for changes in physical appearance, potency, and other critical quality attributes.
5. Scale-up and Validation:
   1. Scale