[ANAL-LEC-SEMIS-01-PT3] COMPENDIAL REQUIREMENTS FOR SOLUTIONS

THIS FLASHCARDS IS ABOUT [ANALYSIS] PHARMACEUTICAL STABILITY REQUIREMENTS FOR LIQUID AND RECONSTITUTED DOSAGE FORMS.

• Clarity

• Odor

• Color

PHYSICAL STABILITY OF PHARMACEUTICAL SOLUTIONS:

A stable solution must maintain its original?

Mnemonics: COC

Consistent

PHYSICAL STABILITY OF PHARMACEUTICAL SOLUTIONS:

The Goal: Ensuring the product remains ______ throughout its entire shelf life.

Retention of clarity

PHYSICAL STABILITY OF PHARMACEUTICAL SOLUTIONS:

Primary Concern: __________________ is the cornerstone of a physical stability program.

14 days

How many days must the opened medicine (kept in the refrigerator) be consumed within?

Ordinary light

METHODS FOR TESTING CLARITY:

Visual vs. Instrumental Observation:

• This is insufficient for professional clarity testing

Tyndall Effect

METHODS FOR TESTING CLARITY:

Light Scattering:

• Projecting microscope light through a diaphragm.

Hazy appearance

METHODS FOR TESTING CLARITY:

Light Scattering (Tyndall Effect):

• Undissolved particles scatter light, creating a “____” appearance.

• Light-scattering instruments

• Coulter Counter

What are the two (2) Analytical Tools for Testing Solution’s Clarity?

Light-scattering instruments

Analytical Tools for Clarity Testing:

This is the most sensitive method.

Coulter Counter

Analytical Tools for Clarity Testing:

This is used for particle counting and sizing.

Not visible

Tyndall Effect:

What is the visibility for solution (water)?

Visible

Tyndall Effect:

What is the visibility for colloid (milk)?

Visible

Tyndall Effect:

What is the visibility for suspension (water + flour)?

4-47 degrees celsius

THERMAL STABILITY & CYCLING:

Testing Range: Solutions should remain stable between what temperature?

Decreased solubility

THERMAL STABILITY & CYCLING:

Low-Temperature Risks: Ingredients may precipitate due to?

1. Flaking of particles

2. Leaching/degradation

THERMAL STABILITY & CYCLING:

1. ____________ from glass containers.

2. ___________________ from rubber closures.

Temperature cycling

THERMAL STABILITY & CYCLING:

Stability Strategy: Use _____________ to stress-test the formulation against these fluctuations.

1. pH changes

2. Insoluble acids/bases

COMPREHENSIVE STABILITY PARAMETERS:

Chemical Indicators: Careful monitoring of (1)____, particularly for soluble salts of (2)________.

• Taste

• Appearance

• Color

• Odor

COMPREHENSIVE STABILITY PARAMETERS:

What are the four (4) Organoleptic Properties?

Mnemonics: TACO

1. Viscosity and pourability

2. Surface tension and specific gravity

3. Specialized Testing

What are the three (3) Physical & Rheological Properties?

Mnemonics: VSS

• Isotonicity

• Gas evolution

• Microbial stability

• Pyrogen content (for parenterals)

What are the four (4) Specialized Testing?

Mnemonics: IGMP

Filter media

MANUFACTURING & FILTRATION CONSIDERATIONS:

Adsorption Risks: This media can inadvertently absorb active ingredients or excipients from the solution.

Stability Samples

MANUFACTURING & FILTRATION CONSIDERATIONS:

Protocol Consistency: These samples must be prepared using the exact same filter type as the production-size batches

Discrepancies

MANUFACTURING & FILTRATION CONSIDERATIONS:

Protocol Consistency: Prevents ______ between lab-scale results and commercial manufacturing.

• Color

• Odor

• Moisture Content

RECONSTITUTED FORMULATIONS:

Pre-reconstitution: Observe the original dry cake for?

Mnemonics: COM

• Rate of reconstitution

• Final solution

• Key metric

RECONSTITUTED FORMULATIONS:

Post-reconstitution: What are the three (3) observations must be made?

Mnemonics: RAFIK

Rate of reconstitution

How quickly does it dissolve?

Final solution

Monitor color, odor, and clarity of the liquid after mixing.

• Color

• Odor

• Clarity of the liquid

For final solution, monitor these three (3) after mixing

Mnemonics: COC

Key metric

The stability profile must cover the product’s journey from dry powder to ready-to-use liquid.

1. Dry powder

2. Liquid

The stability profile must cover the product’s journey from (1)____ to ready-to-use (2)____.