Prescription requiredAntihypertensive

Losartar 50MG Tab — Side Effects & Warnings

Known side effects of Losartar 50MG Tab include Dizziness,low blood pressure (hypotension),fatigue,headache,raised potassium (hyperkalemia),nausea,diarrhea,back pain,upper respiratory tract infection. Not everyone experiences these side effects.

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated June 2026

Common Side Effects

Dizziness
low blood pressure (hypotension)
fatigue
headache
raised potassium (hyperkalemia)
nausea
diarrhea
back pain
upper respiratory tract infection

This is not an exhaustive list. Consult your doctor if you notice any unusual symptoms.

Important Warnings

Not recommended in pregnancy (can harm unborn baby), especially in 2nd/3rd trimester—stop and consult doctor immediately if pregnant. Use caution in kidney disease, renal artery stenosis, dehydration/low salt intake, heart failure, and liver impairment. Monitor blood pressure, kidney function (creatinine) and serum potassium. Risk of hyperkalemia increases with potassium supplements/salt substitutes. Seek help for facial/lip swelling (angioedema) though rare.

Drug Interactions

Losartar 50MG Tab may interact with the following:

ACE inhibitors or aliskiren (in diabetes/kidney impairment) may increase risk of kidney problems and hyperkalemia; potassium supplements/potassium-sparing diuretics (spironolactone
eplerenone
amiloride) increase hyperkalemia; NSAIDs (ibuprofen
diclofenac) may reduce antihypertensive effect and worsen kidney function; lithium levels may increase; other antihypertensives/diuretics may increase risk of hypotension.

Always tell your doctor about all medicines you are taking, including over-the-counter drugs and supplements.

Pregnancy Safety

Not recommended

Alcohol Interaction

Use with caution

Habit Forming

Storage

Store below 25°C in a dry place, protected from light and moisture. Keep in original blister pack and out of reach of children.

Losartar 50MG Tab — Safety Summary

Composition: Losartan potassium 50 mg
Prescription: Required (Rx)
Pregnancy: Not recommended
Alcohol: Use with caution
Habit forming: No

Losartar 50MG Tab — Safety FAQs

What should I do if I experience side effects?

Mild side effects often resolve on their own. If side effects are severe or persistent, stop the medicine and consult your doctor immediately.

Are all listed side effects common?

No. Some side effects are common while others are rare. Not everyone experiences side effects. Consult your doctor if you are concerned.

Can I take this medicine with other drugs?

Some medicines interact with each other. Always inform your doctor about all medicines you are currently taking.

When should I seek emergency help?

Seek immediate medical attention if you experience severe allergic reactions (difficulty breathing, swelling of face/throat), chest pain, or any life-threatening symptoms.

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Safety disclaimer

This information is for educational purposes only and is not a substitute for professional medical advice. If you experience severe side effects, seek medical attention immediately.

Losartar 50MG Tab — Side Effects & Warnings

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated June 2026