## Most Commonly Prescribed Statin in India ### Epidemiology of Statin Use **Key Point:** Atorvastatin is the most frequently prescribed statin in India for both primary and secondary prevention of cardiovascular disease, accounting for the largest market share and clinical practice preference. ### Why Atorvastatin Dominates | Feature | Atorvastatin | Rosuvastatin | Simvastatin | Pravastatin | |---------|--------------|--------------|-------------|-------------| | **LDL reduction** | 30–55% | 40–55% | 25–45% | 20–40% | | **Half-life** | 14 hrs | 19 hrs | 2–3 hrs | 2–3 hrs | | **Cost in India** | Low (generic) | Moderate–High | Low (generic) | Low (generic) | | **CYP3A4 metabolism** | Yes | Minimal | Yes | Minimal | | **Prescriber familiarity** | Very high | Moderate | Moderate | Low | | **Clinical trial evidence** | Extensive (ASCOT, CARDS) | Growing | Older data | Older data | **High-Yield:** Atorvastatin is the statin of choice in Indian clinical practice because of: 1. **Affordability** — widely available as generic formulation 2. **Efficacy** — moderate-to-high potency (30–55% LDL reduction at standard doses) 3. **Familiarity** — most prescribed by Indian cardiologists and physicians 4. **Evidence base** — landmark trials (ASCOT, CARDS) used atorvastatin 5. **Dosing flexibility** — available in 10, 20, 40, 80 mg strengths ### Clinical Pearl While rosuvastatin has superior LDL-lowering potency (40–55%), atorvastatin remains the first-line agent in India due to lower cost and established clinical practice patterns. Rosuvastatin is reserved for patients requiring more aggressive LDL reduction or those intolerant to atorvastatin. ### Mechanism of Action (All Statins) All statins competitively inhibit HMG-CoA reductase, the rate-limiting enzyme in cholesterol synthesis, leading to upregulation of LDL receptors and increased hepatic clearance of LDL-cholesterol. **Mnemonic:** **ARSP** — Atorvastatin, Rosuvastatin, Simvastatin, Pravastatin (in order of current prescribing frequency in India).
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