Impurities in pharmaceutical preparation may be due to following sources

(a) Raw material

(b) Manufacturing process

(c) Chemical instability

(d) All of the above

Correct Answer. (d) All of the above

The three different types of impurities in pharmaceuticals include organic, inorganic, and residual solvents. Most of these impurities occur due to manufacturing processes, degradation, storage conditions, excipients, or contamination. Without identifying and eliminating impurities in pharmaceuticals, the quality, safety, and efficacy of drug products are put at risk.  

Raw material, Manufacturing process, Chemical instability could be responsible for Impurities in pharmaceuticals preparation.

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