Transcript validation - Pharmawiki.in

Seminar On
VALIDATION OF RAW
MATERIALS
By
S.Rajesh kumar
M.Pharmacy I SEM
Department of Industrial pharmacy
University college of pharmaceutical sciences
Kakatiya university
CONTENTS
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INTRODUCTION TO VALIDATION
DEFINITION OF VALIDATION
QUALITY ATTRIBUTES
WHY TO VALIDATE
WHEN TO VALIDATE
DEFINITION OF RAW MATERIAL
STEPS INVOLVED IN RAW MATERIAL VALIDATION
CONCLUSION
REFERENCES
VALIDATION
Validation is the scientific study of a
system
 To prove that the facility/system/equipment/method
is consistently doing what it is supposed to do (i.e.,
that the process is under control).
 We want to make decisions based on good science
and not hunches and assumptions!
 To determine the process variables and acceptable
limits for these variables, and to set-up appropriate
in-process controls.
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FDA DEFINITION OF VALIDATION
– “Validation is a process of demonstrating,
through documented evidence, that a
process, procedure, method, piece of
equipment, or facility will consistently
produce a product or result that meets
predetermined specifications and quality
attributes.”
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Quality Attributes
Identity
Safety
Potency
Purity
Stability
Efficacy
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Why validate?
It is required by the current good
manufacturing practice(CGMP) regulations
promulgated by the US FDA.
It should be performed because it is in accord
with good business judgment.
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WHEN A PROCESS SHOULD BE
VALIDATED
The following model may be useful in determining whether or not a process should validated:
A
Is Process
Output
Verifiable
NO
D
Validate
YES
B
Is Verification
Sufficient &
Cost Effective
YES
C
Verify &
Control
the Process
NO
E
Redesign Product
and/or
Process
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DEFINITION OF RAW MATERIAL
RAW MATERIAL: It is a term used to denote
starting materials, reagents and solvents
intended for use in the production of
intermediates or active pharmaceutical
ingredient(API).
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RAW MATERIAL VALIDATION
Several steps are required to validate a raw material. They are as
follows:
(I) LIST ALL THE RAW MATERIALS NEEDED TO PREPARE A
PRODUCT BATCH.
 The list should include the materials used in production and testing
 Active ingredients
 Excipients
 Processing aids
 Chemicals
 Official standards
 Laboratory materials
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(II) IDENTIFY AT LEAST TWO SUPPLIERS FOR EACH
RAW MATERIAL.
After we have complete list of all raw materials needed, we
must locate sources of these materials.
It is always advisable to locate and validate at least two
suppliers.
EVALUATION FOR SELECTING A SUPPLIER:
(1)Provide the raw material that we need
(2)Must be capable of providing the grade that we want
(3)Providing the quantity that we require
(4)To provide increased quantities quickly (to evaluate the
supplier ’s capacity)
(5)Determine whether our supplier is a manufacturer or
distributor?
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(6) Cost of the raw material.
(7) Reputation and reliability of the supplier.
NOTE: He must use written standard operating procedures and
establish proper raw material storage conditions and distribution
procedures.
 Precautions
 Joint agreements
 Attention
 Investigation
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(III) IF A SUPPLIER IS NEW, VISIT HIS FACILITY.

It is important to establish a good relationship with a
supplier.
 To meet representatives personally.
 Inspect his facility.
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During the visit, it is also important to observe…..
 housekeeping and sanitation practiced
 The use of written procedures and logs
 proper segregation and batch identification
 The use of laboratory notebooks
 The size of the laboratory area and staff
 The use of up to date laboratory instrumentation
production equipment.
and
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(IV) OBTAIN SAMPLES AND SUPPLIER’S CERTIFICATES
OF ANALYSIS
 To determine the characteristics of the raw material.
 The certificates of analysis and samples the extent of
variation from lot to lot on specific tests.
 It is important to measure this variation between different lots
from the same supplier and then the variation between suppliers.
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(V) ESTABLISH SPECIFICATIONS FOR EACH RAW
MATERIAL
•List of parameters.
•For each parameter listed, an acceptable , measurable range of
activity should be established.
•Compendial raw materials
•And non- compendial raw materials
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(VI) ESTABLISH TEST PROCEDURES.
A test procedure must be established for each specification.
For raw materials that are compendial, test procedures are
denoted along with their respective specifications.
For raw materials that are not listed in official compendia,we
embark into methods development.
This work calls on compendial methods that exist for similar
compounds, which can be modified. It also calls for methods that
are published literature.
Documentation of so developed test procedures should be paid
attention.
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(VII) ESTABLISH SAMPLING PROCEDURES.
Documentation of raw material sampling is developed.
This procedure includes general requirements that may apply to
any raw material received in the plant, such as
The number of containers to sample(sample size).
Method of sampling.
Individual raw materials may have certain sampling
requirements based on their stability and/or intended use.
Before these individual sampling procedures are instituted in
routine practice, they should be evaluated as part of process
validation.
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(VIII) ESTABLISH OPTIMUM STORAGE CONDITIONS
Raw material containers must be handled and stored under
prescribed conditions in order to protect their stability over the
stated shelf life.
The chemistry of each raw material should be reviewed and
aspects concerning hygroscopity, sensitivity to light,sensitivity to
high and low temperature extremes, ability to support microbial
growth,reactivity with any container or closure system, and
oxidising capability are checked.
Once we have established the factors that critically affect a raw
material, we can conduct stability studies that will indicate the
optimum storage conditions and establish a shelf life for the raw
material.
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(IX) ESTABLISH SHELF LIFE
Shelf life or expiry dating of a raw material is the time period
within which it must be used.
Some times we assign an expiry date that is shorter than our
data indicate, so that we will always use fresh raw materials.
The shelf life of a raw material is established by testing over
time in the containers and closures to be used, after storage under
the anticipated optimum conditions, and also under adverse
conditions.
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(X) CHALLENGE OF THE RAW MATERIALS.
The last step required to validate a raw material is the
operation in which the information that has been established
concerning the raw material is challenged, to assure that is
scientifically sound and meaningful.
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CONCLUSION
To build up quality in the final product a thorough control over
each step of the process is required.
This makes it essential to establish a documented evidence to
be developed by thorough experimentation.
So the raw materials are not an exception to this and they
should be validated by opting an systematic approach.
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REFERENCES
Robert A. Nash, pharmaceutical process validation.
Berry, I.R.,and Daniel harpaz, validation of active
pharmaceutical ingredients.
P.P.sharma, how to practice GMP’S.
Validation in API manufacturing plants.Brussels:active
pharmaceutical ingredients committee. http://www.apic.ecfic.org
Guide to Inspections Validation of Processes. Washington
DC:use Food and Drug Administration.
http:/www.fda.gov/ora/inspect_ref/igs/valid.html.
Validation of compendia Methods.The United States
Pharmacopeia Convention,Inc.,1995.
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