What are the parameters of Preformulation?

Preformulation studies included solubility, pKa, dissolution, melting point, assay development, stability in Solution, stability in solid state; microscopy, bulk density, flow properties, excipient compatibility, entrapment efficiency and release profile of microspheres were investigated.

What are the factors to consider in preformulation studies?

What to consider before starting a preformulation study

The available physicochemical data including chemical structure, different salts, potency relative to the competitive products and the dosage form etc.
Anticipated dose and the proposed route of drug administration.
Supply situation and development schedule.

How do you proceed for Preformulation?

Pre-formulation Development

Physicochemical Characterization.
Purity Determination.
Salt Selection.
Polymorphism Screening.
Compatibility Studies and Excipients Selection.

What are the different preformulation studies?

Various techniques are available to study crystallinity like X-ray, differential scanning microscopy, differential thermal analysis, hot stage microscopy, and the most important one that is scanning electron microscopy.

What is BCS in industrial pharmacy?

The Biopharmaceutical Classification System (BCS) is an experimental model that measures permeability and solubility under prescribed conditions. Various schemes exist that attempt to funnel a given active pharmaceutical ingredient (API) towards a particular drug delivery technique based on the BCS category.

What is Preformulation?

Preformulation is the stage of development during which the physicochemical properties of the drug substance are characterised and established. Knowledge of the relevant physiochemical and biopharmaceutical properties determines the appropriate formulation and delivery method for Pre-Clinical and Phase 1 studies.

What are the physical properties of preformulation?

Among these properties, drug solubility, partition coefficient, dissolution rate, polymorphic forms and stability are plays important role in preformulation study. Polymorphism having crystal and amorphous forms shows different chemical physical and therapeutic description of the drug molecule.

What is polymorphism in Preformulation?

The term polymorphism was coined by AGUIAR ETAL in 1967. THUS IT IS DEFINED AS THE ABILITY OF SUBSTANCE TO EXIST AS TWO OR MORE CRYSTALLINE PHASES THAT HAVE DIFFERENT ARRRANGEMENTS OR CONFIRMATIONS OF THE MOLECULES IN THE CRYSTAL LATTICE.

What is per formulation?

PREFORMULATION  It is defined as the phase of research and development in which preformulation studies characterize physical and chemical properties of a drug molecule in order to develop safe, effective and stable dosage form.

Which drug is under BCS II?

It has been reported that many BCS Class II drugs such as flurbiprofen (Davies, 1995), naproxen (Davies and Anderson, 1997; Faassen and Vromans, 2004), ketoprofen (Faassen and Vromans, 2004), rifampicin (Agrawal and Panchagnula, 2005; Becker et al., 2009; Panchagnula and Agrawal, 2004), and carbamazepine (Kovacevic et …

How is solubility determined at Preformulation?

Solubility is an essential and extensively studied preformulation parameter. The solubility of a candidate drug molecule is the amount of the drug (solute) that dissolves in a given solution (solvent) to produce a saturated solution at constant temperature and pressure. …

What are the preformulation parameters of the drug substance?

In order to accomplish these goals, certain Preformulation parameters of the drug substance are investigated. Let’s see what these parameters are: Organoleptic properties are the aspects that can be experienced through one’s senses like taste, smell, sight, and touch. Thus, it includes a recording of the colour, odour, and taste of the drug.

What is a preformulation study?

But, what is it exa ctly?  A Preformulation study is an investigation of the physical, chemical, and mechanical properties of a drug substance to develop a safe, effective, and stable dosage form. Thus, it forms an integral part of the drug development process.

What do we know about preformulation of microspheres?