M1 INTRODUCTION TO QUALITY CONTROL AND QUALITY ASSURANCE OF PHARMACEUTICAL PRODUCTS Flashcards
Dimensions of Quality (Garvin, 1987)
A. Aesthetics
B. Features
C. Perceived Quality
D. Conformance to Standards
E. Performance
F. Reliability
G. Durability
H. Serviceability
“How often does the product fail?”
Reliability
“Our internet connection never disappoints us.”
Reliability
“Will the product do the intended job?”
Performance
“The ballpen I bought writes smoothly”.
Performance
“How long does the product last?
Durability
“Our electric fan is still working since 1989.”
Durability
“How easy is it to repair the product?”
Serviceability
“I accidentally downloaded a malware in my phone. Good thing the Service Center was able to remove it.”
Serviceability
“What does the product look like?”
Aesthetics
“The shoes I purchased online looks authentic.”
Aesthetics
“Samsung S9 offers iris/fingerprint scanner and fast battery charging.”
Features
“What does the product do?”
Features
“What is the reputation of the company or its product?
Perceived Quality
“Where do you usually buy your medicines?”
Perceived Quality
“Is the product made exactly as the designer intended?”
Conformance to Standards
“The tailored uniform fits perfectly. ”
Conformance to Standards
Quality is fitness for use
– Juran, 1988
– It places emphasis on the consumer aspect of
quality.
– It emphasizes that requirements and
specifications translate fitness for use into
measurable quantities.
– Example: Glucometer
Quality is conformance to requirements or specifications.
– Gilmore, 1974
– In order to manage quality adequately, we must be able to quantify and measure it.
– Example: Labeled claim of medicines
consumer aspect of
quality
Quality is fitness for use.
Quality is fitness for use with customer satisfaction
– ISO 9000, 2000
– ISO- International Organization for standardization
* ISO is NOT an acronym.
* Greek word “isos” – “equal”
– Customer satisfaction is the main determinant of quality.
– Example: Quality education
ISO
International Organization for standardization
“isos”
“equal
Customer satisfaction is the main determinant of quality.
Quality is fitness for use with
customer satisfaction
Quality is inversely proportional to variability.
– Montgomery, 2013
– If the variability in a product’s important
characteristics decreases, the quality of the
product increases.
– Thus, quality improvement is the
reduction of variability in processes and
products.
If the variability in a product’s important characteristics decreases
the quality of the
product increases
is the reduction of variability in processes and products.
quality improvement
–Every product possesses a number of elements that jointly describe what the user or consumer thinks of as quality.
Quality Characteristics
no two products are ever identical (True or False)
True
– characteristics that have discrete values and can be
counted (Accept/Reject, Pass/Fail, Go/No-Go)
ATTRIBUTES
In order to manage quality adequately, we must be able to?
quantify and measure it.
– length, weight, diameter, time
VARIABLES
– “Measure”
VARIABLES
– “Classify
ATTRIBUTES
– characteristics that can be measured
VARIABLES
– % defective, number of flaws in a shirt, number of broken eggs in a box, etc.
ATTRIBUTES
are often evaluated relative to specifications
Quality Characteristics
- the desired value for that quality characteristic
Nominal or target value
largest allowable
value
Upper specification limit (USL)
smallest allowable
value
Lower specification limit (LSL)
fail to meet one or more of its specifications
Nonconforming products
can be counted/classified
ATTRIBUTE
(a) Either a student PASS or FAIL
ATTRIBUTE
(b) Grades:
> 70% PASS
< 70% FAIL
VARIABLE
Accept/Reject
ATTRIBUTE
can be measured
VARIABLE
Length, width
VARIABLE
The tablet is 24 mm thick
VARIABLE
11 defective products were detected
ATTRIBUTE
The weather can be sunny, cloudy, raining, or snowing.
ATTRIBUTE
“regulatory process” through which we measure actual quality performance.
(Juran, 1974)
Quality Control
Reliance on appropriate “analytical tests”
Quality Control
Product Oriented
Quality Control
Operational techniques
Quality Control
l “planned and systematic activities” implemented within the quality system that can be demonstrated “to provide confidence” that a product or service will fulfill requirements for quality
Quality Assurance (QA)
Process
Quality Assurance (QA)
Applies at all stages of the manufacturing
process.
Quality Assurance (QA)
Features of QA Systems
- inspection/checking
Audit Process
Features of QA Systems
- purpose and objective
Quality Policy
Features of QA Systems
- materials, equipment, personnel
Resources
Features of QA Systems
– procedures and standards
Documentation
Benefits of QA
- higher standards of production,
- compliance with regulatory requirements,
- reduced waste, and
- loss risk of product defects
makes sure that quality control is doing what it should be doing.
Quality assurance
proactive
Quality assurance
audits
Quality assurance
focused on process
Quality assurance
prevents defects
Quality assurance
focused on products
Quality Control
finds defects
Quality Control
testing
Quality Control
reactive
Quality Control
Types of Product
- Raw material
- In-process material
- Finish product
“Development of strategic activities”
designed to improve the quality of a
product.
Quality Planning
Drugs are special
(True or False)
True
Manufacturing Process
- Personnel
- Premises & Equipment
- Procedure
- Product
Warehouse (Stickers)
- Quarantine (Orange)
- Approved (Green)
- Rejected (Red)
should not induce further harm
drugs
Confirms the existence of active
ingredient/s
Identity
Should not have significant quantities
of other products from cross-contamination
Purity
Should contain the declared amount
of API
Strength or Potency
Specified average content range
Strength or Potency
OVERAGE - To ensure long shelf-life,
products contain with maximum
allowable amount
– Margin or safety for slight losses over time
Strength or Potency
Consistency, colors, shape and sizes should not vary significantly.
Uniformity of Dosage Forms
– may suggest problems with quality parameters.
–May not reflect safety or efficacy but could influence product acceptability.
Variation
Speed and completeness with which a pharmaceutical administered in a specific form enters the bloodstream.
Bioavailability
(rate and extent)
Bioavailability
Absorption
Bioavailability
– Comparative bioavailability
BIOEQUIVALENCE
A pharmaceutical product must retain its properties within specified limits
Stability
- Expiration Date
- Depends on API
– Formulation
– packaging
Stability
– Physical and chemical deterioration
– Reduced potency
– Formation of toxic by-products
- Improper storage and distribution
LADMER
Liberation
Absorption
Distribution
Metabolism
Excretion
Response
Formulation of dosage form
Liberation
Absorption
Bioavailability
Efficacy to go to the site of action - active
Distribution
to inactivate the drug
Metabolism
Removed from the body after deactivating the drug
Excretion
Pharmacologic Action
- activated drug distribution
Response
- Starting materials
- Manufacturing process
- Equipment
- Packaging
- Storage
- Transportation
Pharmaceutical Quality
- Where quality standards are “published periodically”
- Provide detailed descriptions of pharmaceutical “characteristics and analytical techniques.”
Pharmacopeias
– Major manufacturing and exporting countries in EU
- European Pharmacopeia
Includes monographs on finished dosage
forms
- WHO International Pharmacopeia
Qualitative test
Identification
– Complex and expensive analytical procedures
- United States Pharmacopeia
Provides “detailed parameters” that are used to determine whether a medicine meets key quality attributes
1. the name of the ingredient or preparation;
2. the definition;
3. packaging, storage, and labeling
requirements; and
4. the specification.
Pharmacopeial Monograph
Quantitative test
Assay
Contaminants in trace amounts
Impurities
NMT
Not more than
NLT
Not less than
To ensure that each medicine reaching a patient is
–SAFE
–EFFECTIVE, and of
–ACCEPTABLE QUALITY
Pharmaceutical QA
- Toxicity or ADRs
- Prolonged illness
- Death
- Wastes money
- Affect health system credibility
Consequences of Poor Quality Pharmaceuticals
Most counterfeiting cases occur in
less developed and developing
countries, where poverty and loose
regulatory oversight make marketing
counterfeits easier.
Prevalence of Poor Quality
Pharmaceuticals