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Review: Losartan side effects

In this review, we analyze Losartan side effects by the time on the drug, gender and age (0-60+) of the people who have side effects while taking Losartan. The review is based on 13,003 people who have side effects while taking Losartan from FDA and social media, and is updated regularly.

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What is Losartan

Losartan (latest outcomes from 14,094 users) has active ingredients of losartan potassium. It is often used in high blood pressure.

Other drugs that have the same active ingredients (losartan potassium): Cozaar, Losartan Potassium.

On Feb, 11, 2015: 13,003 people who reported to have side effects when taking Losartan are studied


Most common side effects over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Headache (pain in head)DizzinessAngioedema (rapid swelling of the dermis)DizzinessHypertension (high blood pressure)Headache (pain in head)Blood Pressure IncreasedDyspnoea (difficult or laboured respiration)
DizzinessFatigue (feeling of tiredness)DizzinessIschaemic Stroke (stroke; caused by an interruption in the flow of blood to the brain)Arthralgia (joint pain)Hypertension (high blood pressure)Erectile DysfunctionFatigue (feeling of tiredness)
Blood Pressure IncreasedRenal Failure Acute (rapid kidney dysfunction)Erectile DysfunctionBlood Pressure IncreasedHeart Rate IncreasedDizzinessRash (redness)Dizziness
InfectionDiarrhoeaLiver Disorder (liver diseases)Hyperkalaemia (damage to or disease of the kidney)DiarrhoeaConstipationUrinary Tract InfectionNausea (feeling of having an urge to vomit)
Drug IneffectiveLiver Disorder (liver diseases)Nausea (feeling of having an urge to vomit)Angioedema (rapid swelling of the dermis)Irritable Bowel SyndromeRenal Failure (kidney dysfunction)Pruritus (severe itching of the skin)Pain
Erythema Multiforme (type of hypersensitivity reaction)Headache (pain in head)Fatigue (feeling of tiredness)Headache (pain in head)Nausea (feeling of having an urge to vomit)Muscle Spasms (muscle contraction)Oedema Peripheral (superficial swelling)Diarrhoea
Nephrotic Syndrome (kidney disease with proteinuria, hypoalbuminemia, and oedema)VomitingHeadache (pain in head)Cold SweatPanic AttackCoughFace Oedema (swelling of face)Headache (pain in head)
Dyspnoea (difficult or laboured respiration)Blood Pressure IncreasedDyspnoea (difficult or laboured respiration)Bronchopneumonia (inflammation of the lungs, arising in the bronchi or bronchioles)Gastrointestinal Haemorrhage (bleeding gastrointestinal tract)Neurogenic Bladder (the normal function of the bladder is to store and empty urine in a coordinated, controlled fashion)Lymphadenopathy (disease or enlargement of lymph nodes)Arthralgia (joint pain)
Nausea (feeling of having an urge to vomit)Abdominal PainMalaise (a feeling of general discomfort or uneasiness)Renal Failure Chronic (long lasting kidney dysfunction)Anaemia (lack of blood)Pulmonary Haemorrhage (acute bleeding from the lung)Priapism (prolonged and painful erection that can last from several hours up to a few days)Asthenia (weakness)
Rash (redness)Angioedema (rapid swelling of the dermis)Dysphagia (condition in which swallowing is difficult or painful)Cerebral Ischaemia (insufficient blood flow to the brain to meet metabolic demand)PneumoniaVertigoSwollen Tongue (swelling of tongue)Drug Ineffective

Most common side effects by gender * :

DizzinessDyspnoea (difficult or laboured respiration)
Nausea (feeling of having an urge to vomit)Fatigue (feeling of tiredness)
Dyspnoea (difficult or laboured respiration)Pyrexia (fever)
Fatigue (feeling of tiredness)Nausea (feeling of having an urge to vomit)
Headache (pain in head)Dizziness
VomitingMalaise (a feeling of general discomfort or uneasiness)
Arthralgia (joint pain)Asthenia (weakness)
Hypertension (high blood pressure)Hypotension (abnormally low blood pressure)
PainDrug Ineffective

Most common side effects by age * :

Exposure To Communicable DiseaseDevice Related InfectionLupus Nephritis (a chronic inflammatory autoimmune disorder that may affect kidney tissue)Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)Malaise (a feeling of general discomfort or uneasiness)Dyspnoea (difficult or laboured respiration)Dyspnoea (difficult or laboured respiration)Nausea (feeling of having an urge to vomit)
Blood Pressure IncreasedRenal Failure Acute (rapid kidney dysfunction)InfectionOedema Peripheral (superficial swelling)Pyrexia (fever)Headache (pain in head)Arthralgia (joint pain)Dizziness
VomitingHenoch-schonlein Purpura (inflammation of the blood vessels in the skin and other body organs)Systemic Lupus Erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue)Arrhythmia (irregular heartbeat)Fatigue (feeling of tiredness)Fatigue (feeling of tiredness)Nausea (feeling of having an urge to vomit)Dyspnoea (difficult or laboured respiration)
Loss Of ConsciousnessHypertension (high blood pressure)Pyrexia (fever)Arthralgia (joint pain)Renal Failure (kidney dysfunction)Nausea (feeling of having an urge to vomit)DizzinessFatigue (feeling of tiredness)
Cardiac ArrestFatigue (feeling of tiredness)Hypertension (high blood pressure)Urinary Tract InfectionDiarrhoeaHypertension (high blood pressure)PainDiarrhoea
Foetal Growth Restriction (poor growth of a baby while in the mother's womb during pregnancy)Hypotension (abnormally low blood pressure)Dyspnoea (difficult or laboured respiration)DiarrhoeaHypotension (abnormally low blood pressure)Pyrexia (fever)Headache (pain in head)Asthenia (weakness)
Oligohydramnios (a condition in pregnancy characterized by a deficiency of amniotic fluid)Oedema Nos (fluid collection in tissue)Blood Creatinine IncreasedHypertension (high blood pressure)Nausea (feeling of having an urge to vomit)CoughFatigue (feeling of tiredness)Headache (pain in head)
Congenital Renal Disorder (disease of kidney by birth)Anaemia Nos (lack of blood)Renal Failure (kidney dysfunction)Dyspnoea (difficult or laboured respiration)PainRash (redness)Drug IneffectivePyrexia (fever)
Pulmonary Embolism (blockage of the main artery of the lung)Proteinuria PresentRenal Impairment (severely reduced kidney function)Platelet Count DecreasedUrinary Tract InfectionDizzinessHypotension (abnormally low blood pressure)Malaise (a feeling of general discomfort or uneasiness)
Proteinuria (presence of protein in the urine)Septic Arthritis Staphylococcal (bacterial blood infection spreads to joint caused by staphylococcus)Hypotension (abnormally low blood pressure)Pain In ExtremityConvulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)Blood Pressure IncreasedPyrexia (fever)Vomiting

* Some reports may have incomplete information.

Browse Losartan side effects from A to Z:

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

Are you taking Losartan?

On eHealthMe, Losartan (losartan potassium) is often used for high blood pressure. Find out below the conditions Losartan is used for, how effective it is, and any alternative drugs that you can use to treat those same conditions.

What is Losartan used for and how effective is it:

Other drugs that are used to treat the same conditions:

Studies of common Losartan drug interactions:

Browse Losartan drug interactions with drugs from A to Z:

NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

You may report adverse side effects to the FDA at or 1-800-FDA-1088 (1-800-332-1088).

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.


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