Valsartan: Angiotensin II receptor antagonist in antihypertensive drugs

Valsartan is a commonly usedAngiotensin II receptor blockers (ARBs), mainly used to treathigh blood pressureandheart failure. Its mechanism of action is by blocking the binding of angiotensin II to receptors, thereby relaxing blood vessels and lowering blood pressure. Compared with other antihypertensive drugs, valsartan has fewer side effects and is especially suitable for patients who cannot tolerate ACE inhibitors (such as cough side effects). The content will focus on valsartanPharmacological effects, indications, usage and dosage, adverse reactions and manufacturerExpand to help readers fully understand this drug.

Pharmacological effects and indications

Valsartan selectively blocksAT1 receptor for angiotensin II, inhibit vasoconstriction, reduce aldosterone secretion, thereby lowering blood pressure. It is suitable for:-essential hypertension: Used alone or in combination with other antihypertensive drugs. -heart failure: Especially suitable for patients who are intolerant to ACE inhibitors. -Protection after myocardial infarction: Some studies show it may reduce the risk of cardiovascular events. Compared with other ARB drugs (such as losartan, irbesartan), valsartan has a stable antihypertensive effect and has a certain protective effect on the kidneys.

Usage, dosage and precautions

The usual dose of valsartan is80-160mg/day, the maximum dose does not exceed 320mg. Things to note when taking medication: -Can be taken on an empty stomach or after meals, but a fixed time is required to ensure stable blood drug concentration. -Patients with renal insufficiency require dose adjustment, use with caution in patients with severe renal failure. -Not allowed for pregnant women, because it may affect fetal development. Common adverse reactions includeDizziness, fatigue, hyperkalemia, but the incidence is low. If facial swelling or difficulty breathing occurs, seek medical attention immediately and be alert for angioedema.

Common products and manufacturers in the market

Valsartan is produced by many pharmaceutical companies. The following are some common products:

Manufacturer	Product name	Specifications
Novartis Pharmaceuticals	Diovan	80mg/160mg
Huahai Pharmaceutical	Valk	80mg
Hengrui Medicine	Ruitan	80mg/160mg

In 2018, some batches were detectedNDMA (nitrosamine impurities)A recall was triggered, but current products meet safety standards.

Summary and suggestions for rational medication use

Valsartan, as a first-line antihypertensive drug, has bothEffective and well toleratedAdvantages, especially suitable for patients with hypertension combined with diabetes or kidney disease. Follow your doctor's advice when taking medication, and monitor blood pressure and potassium levels regularly. Avoid use with potassium supplements or potassium-sparing diuretics to prevent risk of hyperkalemia. If dressing needs to be changed, it should be adjusted gradually under the guidance of a doctor to avoid blood pressure fluctuations.

Citing sources: 1. "China Guidelines for the Prevention and Treatment of Hypertension (2018 Revised Edition)" 2. U.S. FDA Drug Inserts (Diovan®) 3. World Health Organization (WHO) Essential Medicines List 4. Public data of manufacturers (Novartis, Huahai Pharmaceuticals, Hengrui Pharmaceuticals)