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Losartan

Last updated on July 3, 2019.

Overview   |   Dosage   |   Side Effects   |   Where To Buy  

GENERIC NAME: Losartan 

CHINESE NAME: 氯沙坦

COMMON BRANDS IN HONG KONG: Cozaar 科素亞, Lopress, Lorista, Losacor, Osatril

What is Losartan for?

Losartan belongs to a class of medications called angiotensin receptor blockers (ARBs). ARBs block the substances that constrict the blood vessels and hence more blood and oxygen can reach the heart. Losartan is therefore commonly used to treat high blood pressure, kidney problems in patients with type 2 diabetes mellitus, and chronic heart failure when ACEIs like Lisinopril cannot be used (for example because of cough). 

How to use it?

Losartan can be taken by mouth as tablets. Suggested adult oral doses for different uses are listed below: 

For high blood pressure 

Start with 25-50 mg once daily. The dose may be increased to 100 mg once daily based on your response. Some doctors may prescribe twice daily dosing.

For kidney problems in patients with type 2 diabetes mellitus 

Start with 25-50 mg once daily. The dose may be increased to 100 mg once daily based on your response. Some doctors may prescribe twice daily dosing. 

For chronic heart failure when ACEIs cannot be used

Start with 12.5-25 mg once daily. Your doctor will gradually increase the dose up to a target dose of 150 mg once daily if necessary.

What are the side effects of Losartan?

Common side effects of Losartan include cough, diarrhoea, dizziness, headache, high potassium levels, low blood pressure, and kidney impairment. If you have intravascular volume depletion, for example, those taking high-dose other blood pressure-lowering drugs, you may also experience postural hypotension, that is your blood pressure falls when you stand up from sitting or lying down.

Where to buy Losartan in Hong Kong?

In Hong Kong, Losartan is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at http://www.drugoffice.gov.hk

For detailed information about the use of Losartan in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.

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