Pravastatin is a lipid-lowering agent belonging to the statin class of drugs. It acts as a competitive inhibitor of HMG-CoA reductase, the rate-limiting enzyme in the cholesterol biosynthesis pathway. By blocking this enzyme, pravastatin reduces low-density lipoprotein (LDL) cholesterol, total cholesterol, and triglycerides, while modestly increasing high-density lipoprotein (HDL) cholesterol.
Unlike some statins, pravastatin is hydrophilic, which may result in fewer muscle-related side effects and limited penetration across the blood–brain barrier.
It is administered orally as tablets, usually once daily in the evening.
Indications include:
∙ Hyperlipidemia and mixed dyslipidemia
∙ Primary and secondary prevention of cardiovascular disease
∙ Familial hypercholesterolemia
∙ Post-myocardial infarction lipid management
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Parent: Pravastatin Sodium / Pravastatin
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Impurities in pravastatin arise from its fermentation-based production (typically from Streptomyces species), semi-synthetic modifications, and degradation, particularly due to its lactone ring and hydroxyl group sensitivity. Because it is used in long-term cardiovascular therapy, impurity levels must be strictly controlled according to ICH Q3A/B, USP, and EP guidelines.
Process-Related Impurities
Degradation Impurities
Elemental Impurities
Analytical Techniques for Impurity Detection
Pravastatin is used to lower cholesterol levels and reduce the risk of cardiovascular events such as heart attacks and strokes.
It inhibits HMG-CoA reductase, reducing the liver’s cholesterol production and increasing clearance of LDL cholesterol from the blood.
Yes. Due to its hydrophilic nature, pravastatin may have a lower risk of muscle-related side effects and CNS effects compared to lipophilic statins like simvastatin or atorvastatin.
Pravastatin is sensitive to light, moisture, and heat, particularly in its lactone form. It should be stored in a cool, dry place, protected from light and humidity, in tightly closed containers.
