In liquid oral dosage form development, solubility is one of the most critical factors to assess during preformulation studies. The solubility of the active pharmaceutical ingredient (API) directly impacts its bioavailability — how effectively the body absorbs the drug. Without adequate solubility, the drug may not dissolve sufficiently to exert its therapeutic effect, leading to…
ONEFormulation development should always begin with understanding the drug substance. Before selecting any excipient, the scientist must know whether the API is soluble or insoluble, acidic or basic, hygroscopic or stable, and whether the dose is low or high. TWOThe reference product should be studied in detail. Its dosage form, strength, release behavior, labeling claims,…
Granule particle size plays a pivotal role in drug dissolution, especially for BCS Class 2 (low solubility, high permeability) and BCS Class 4 (low solubility, low permeability) drugs. Here’s how: Key Factors to Consider: 1. Surface Area vs. Dissolution Rate: 2. Porosity and Wetting: 3. Granule Size Distribution: Why It Matters for BCS Class 2…
The pKa of a drug substance plays a crucial role in excipient selection during formulation development. pKa is the measure of the acidity or basicity of a molecule, indicating the pH at which half of the drug exists in its ionized form. Since ionization affects solubility, stability, and permeability, understanding pKa helps formulators choose excipients…
The pKa and dissolution constant of an Active Pharmaceutical Ingredient (API) are fundamental properties in formulation development. Together, they determine how the drug behaves in different pH environments, influences its bioavailability, absorption, stability, and ultimately its therapeutic effectiveness. Here’s how they work in synergy: Solubility and Dissolution Rate: The dissolution constant indicates the rate at…
Understanding the degradation pathway of an API is essential during preformulation study, as it directly influences excipient selection and stability study planning. Forced degradation studies provide insights into how an API degrades under stress (e.g., heat, light, pH, oxidation), helping predict chemical stability and ensuring compatibility with excipients. Key Benefits of Forced Degradation Studies: Degradation…
Pharmaceutical formulations are the specific compositions and preparations of API (s) and excipients. These formulations are designed to ensure the safe and effective delivery of medications. There are several types of pharmaceutical formulations, each tailored to meet specific patient needs and drug characteristics. Here are some common types of pharmaceutical formulations: Tablets and Capsules:…
Pharmaceutical formulation development is the process of developing and optimizing drug formulations for commercial production. It involves formulating drugs into various dosage forms to ensure their effectiveness, stability, and safety for patients. In the world of pharmaceuticals, formulation development plays a crucial role in bringing new drugs to market. This process involves the identification,…
