Clopidogrel, with the CAS number 113665 - 84 - 2, is a widely recognized pharmaceutical product. It is a prodrug, which means it is inactive in its administered form and is converted into an active metabolite in the body. Chemically, it belongs to the class of thienopyridine antiplatelet agents. The product is available in various forms, such as tablets, which are commonly used for oral administration.
The molecular formula of Clopidogrel is C₁₆H₁₆ClNO₂S. Its molecular weight is approximately 321.82 g/mol. The melting point of Clopidogrel is around 184 - 186°C. In terms of solubility, it is sparingly soluble in water and soluble in organic solvents like methanol and ethanol.
Clopidogrel plays a crucial role in the medical field, especially in the prevention of cardiovascular diseases. It works by inhibiting the platelet aggregation, which means it reduces the tendency of blood platelets to clump together and form blood clots. This property makes it highly effective in preventing strokes, heart attacks, and other vascular events in patients who have a history of these conditions or are at high risk.
It is often prescribed to patients who have had a recent myocardial infarction (heart attack), ischemic stroke, or peripheral arterial disease. Additionally, it can be used in combination with aspirin for patients undergoing percutaneous coronary intervention (PCI), such as angioplasty with stent placement, to prevent stent - thrombosis and other complications.
Clopidogrel is usually taken orally once a day with or without food. The dosage is determined by the doctor based on the patient's medical condition, age, and other factors. For most patients, the recommended initial dose is a loading dose of 300 - 600 mg, followed by a maintenance dose of 75 mg per day.
It is important to take Clopidogrel exactly as prescribed by the doctor. Do not stop taking the medication without consulting your healthcare provider, as this may increase the risk of blood clots. If you miss a dose, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule.
Case 1: A 65 - year - old male patient had a history of angina pectoris and underwent a coronary stent placement. The doctor prescribed Clopidogrel in combination with aspirin. After taking the medication as directed for several months, the patient's follow - up angiogram showed no signs of stent thrombosis, and he reported a significant improvement in his chest pain symptoms. He was able to resume his normal daily activities without experiencing angina episodes.
Case 2: A 58 - year - old female patient suffered an ischemic stroke. After the acute phase of treatment, she was started on Clopidogrel to prevent further strokes. Over a period of one year, she had no recurrence of stroke, and her neurological function gradually improved. She was able to perform basic self - care tasks and even returned to light part - time work.
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