side effect of losartan

Natashya

3 min read

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06-03-2025

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Losartan is a widely prescribed medication used to treat high blood pressure (hypertension) and protect the kidneys in people with type 2 diabetes. While generally safe and effective, like all medications, it can cause side effects. Understanding these potential side effects is crucial for informed decision-making and managing any complications that may arise. This article will explore the common and less common side effects associated with Losartan, emphasizing the importance of consulting your doctor if you experience any concerning symptoms.

Common Side Effects of Losartan

Most people taking Losartan experience minimal side effects. However, some common ones include:

• Dizziness: This is often reported, especially when starting the medication. It usually subsides as your body adjusts to the drug.
• Headache: Headaches are another relatively common side effect. Staying hydrated and taking pain relievers as directed by your doctor may help.
• Fatigue: Feeling tired or fatigued is possible. This is often temporary and can be mitigated by maintaining a healthy lifestyle.
• Upper respiratory infections: Some users report increased susceptibility to common colds or other upper respiratory infections.
• Nausea: A mild upset stomach is possible, though usually not severe.

These side effects are generally mild and temporary. They often resolve on their own as your body adjusts to the medication. However, if they persist or worsen, it's important to speak with your doctor.

Less Common but More Serious Side Effects of Losartan

While less frequent, some more serious side effects warrant immediate medical attention:

• Low blood pressure (hypotension): Losartan can sometimes cause a significant drop in blood pressure, leading to dizziness, fainting, or lightheadedness. This is more likely if you are already dehydrated or taking other blood pressure medications.
• Kidney problems: Although Losartan is often prescribed to protect the kidneys, in rare cases, it can worsen existing kidney problems or cause new ones. Regular monitoring of kidney function is important, especially for people with pre-existing conditions.
• Changes in liver function: Losartan can affect liver function in some individuals. Symptoms may include jaundice (yellowing of skin and eyes), dark urine, and abdominal pain.
• Angioedema: This is a rare but serious allergic reaction characterized by swelling of the face, lips, tongue, or throat. Angioedema can be life-threatening and requires immediate medical attention. Stop taking Losartan and seek emergency medical help immediately if you experience this.
• Hyperkalemia: This condition involves an elevated level of potassium in the blood. It can cause symptoms such as muscle weakness, fatigue, and irregular heartbeat. Regular blood tests can help monitor potassium levels.
• Cough: A persistent dry cough is sometimes reported, although less frequent than with other ACE inhibitors.

When to Contact Your Doctor

You should contact your doctor immediately if you experience any of the following:

• Severe dizziness or fainting
• Swelling of the face, lips, tongue, or throat
• Difficulty breathing
• Severe stomach pain
• Jaundice (yellowing of skin and eyes)
• Dark urine
• Persistent or worsening headache, fatigue, or nausea

Regular check-ups with your doctor are crucial to monitor your blood pressure, kidney function, and overall health while taking Losartan.

Q: What should I do if I experience side effects from Losartan?

A: First, carefully review the medication information provided with your prescription. Many mild side effects are listed there. If your side effects are mild and listed in the information, you may not need to contact your doctor immediately. However, if your side effects are severe, persistent, or not listed in the information provided, contact your physician or healthcare provider right away. Do not stop taking Losartan abruptly without consulting your doctor.

Conclusion

Losartan is a beneficial medication for many, but understanding its potential side effects is vital. By being aware of both common and serious side effects, and by promptly contacting your doctor when necessary, you can safely and effectively manage your health while taking this medication. Remember, this information is for educational purposes only and does not substitute for professional medical advice. Always consult your doctor or pharmacist before starting or stopping any medication.