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Review: Losartan potassium side effects

In this review, we analyze Losartan potassium side effects by the time on the drug, gender and age (0-60+) of the people who have side effects while taking Losartan potassium. The review is based on 11,795 people who have side effects while taking Losartan potassium from FDA and social media, and is updated regularly.

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What is Losartan potassium

Losartan potassium (latest outcomes from 12,143 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.

On Jan, 11, 2015: 11,795 people who reported to have side effects when taking Losartan potassium 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)Ischaemic Stroke (stroke; caused by an interruption in the flow of blood to the brain)Hypertension (high blood pressure)Hypertension (high blood pressure)Blood Pressure IncreasedDyspnoea (difficult or laboured respiration)
DizzinessRenal Failure Acute (rapid kidney dysfunction)Liver Disorder (liver diseases)Angioedema (rapid swelling of the dermis)Arthralgia (joint pain)Headache (pain in head)Rash (redness)Fatigue (feeling of tiredness)
Blood Pressure IncreasedFatigue (feeling of tiredness)Dyspnoea (difficult or laboured respiration)Blood Pressure IncreasedDiarrhoeaDiplopia (double vision)Tongue Oedema (swelling of tongue)Nausea (feeling of having an urge to vomit)
InfectionDiarrhoeaNausea (feeling of having an urge to vomit)Hyperkalaemia (damage to or disease of the kidney)Irritable Bowel SyndromeVertigoFace Oedema (swelling of face)Dizziness
Drug IneffectiveLiver Disorder (liver diseases)Malaise (a feeling of general discomfort or uneasiness)Bronchopneumonia (inflammation of the lungs, arising in the bronchi or bronchioles)Heart Rate IncreasedDizzinessErythema (redness of the skin)Diarrhoea
Erythema Multiforme (type of hypersensitivity reaction)VomitingDizzinessCerebral Ischaemia (insufficient blood flow to the brain to meet metabolic demand)Panic AttackNeurogenic Bladder (the normal function of the bladder is to store and empty urine in a coordinated, controlled fashion)Urinary Tract InfectionPain
Dyspnoea (difficult or laboured respiration)Abdominal PainDysphagia (condition in which swallowing is difficult or painful)DizzinessGastrointestinal Haemorrhage (bleeding gastrointestinal tract)Renal Failure (kidney dysfunction)HypersensitivityHeadache (pain in head)
Nephrotic Syndrome (kidney disease with proteinuria, hypoalbuminemia, and oedema)Headache (pain in head)Epigastric DiscomfortRenal Failure Chronic (long lasting kidney dysfunction)Nausea (feeling of having an urge to vomit)Cardiac FailurePruritus (severe itching of the skin)Arthralgia (joint pain)
Rash (redness)Angioedema (rapid swelling of the dermis)Alanine Aminotransferase IncreasedConstipationAnaemia (lack of blood)Muscle Spasms (muscle contraction)Priapism (prolonged and painful erection that can last from several hours up to a few days)Asthenia (weakness)
Hypotension (abnormally low blood pressure)Blood Pressure IncreasedHeadache (pain in head)DeathPneumoniaInjection Site PainSwollen 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
DiarrhoeaMalaise (a feeling of general discomfort or uneasiness)
Arthralgia (joint pain)Diarrhoea
PainAsthenia (weakness)
VomitingHypotension (abnormally low blood pressure)
Hypertension (high blood pressure)Drug Ineffective

Most common side effects by age * :

Cardiac ArrestDevice Related InfectionInfectionConvulsion (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)
Exposure To Communicable DiseaseHypertension (high blood pressure)Systemic Lupus Erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue)Arthralgia (joint pain)Pyrexia (fever)Headache (pain in head)Arthralgia (joint pain)Dizziness
Blood Pressure IncreasedHenoch-schonlein Purpura (inflammation of the blood vessels in the skin and other body organs)Lupus Nephritis (a chronic inflammatory autoimmune disorder that may affect kidney tissue)Arrhythmia (irregular heartbeat)Fatigue (feeling of tiredness)Fatigue (feeling of tiredness)PainDyspnoea (difficult or laboured respiration)
VomitingInfusion Related ReactionPyrexia (fever)Oedema Peripheral (superficial swelling)Renal Failure (kidney dysfunction)Hypertension (high blood pressure)Nausea (feeling of having an urge to vomit)Fatigue (feeling of tiredness)
Foetal Growth Restriction (poor growth of a baby while in the mother's womb during pregnancy)Septic Arthritis Staphylococcal (bacterial blood infection spreads to joint caused by staphylococcus)Dyspnoea (difficult or laboured respiration)DiarrhoeaHypotension (abnormally low blood pressure)CoughDizzinessDiarrhoea
Congenital Renal Disorder (disease of kidney by birth)Proteinuria PresentBlood Creatinine IncreasedUrinary Tract InfectionDiarrhoeaPyrexia (fever)Drug IneffectiveAsthenia (weakness)
Oligohydramnios (a condition in pregnancy characterized by a deficiency of amniotic fluid)Albuminuria PresentHypotension (abnormally low blood pressure)Condition AggravatedConvulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)Nausea (feeling of having an urge to vomit)Headache (pain in head)Malaise (a feeling of general discomfort or uneasiness)
Loss Of ConsciousnessAnaemia Nos (lack of blood)Hypertension (high blood pressure)Platelet Count DecreasedUrinary Tract InfectionRash (redness)Fatigue (feeling of tiredness)Headache (pain in head)
Pulmonary Embolism (blockage of the main artery of the lung)Oedema Nos (fluid collection in tissue)Renal Failure (kidney dysfunction)Blood Pressure IncreasedPainDizzinessHypotension (abnormally low blood pressure)Pyrexia (fever)
Stevens-johnson Syndrome (an immune-complex-mediated hypersensitivity disorder. it ranges from mild skin and mucous membrane lesions to a severe)Pallor (unusual lightness of skin colour)Blood Urea IncreasedDyspnoea (difficult or laboured respiration)Nausea (feeling of having an urge to vomit)Blood Pressure IncreasedDiarrhoeaOedema Peripheral (superficial swelling)

* Some reports may have incomplete information.

Browse Losartan potassium side effects from A to Z:

Comments for this study:

Frank (2 years ago):

I would love to have this drug just for the need to masterbate.
Reply the comment

HUSNAJ (4 years ago):

I am 55 and started Losartan potassium 50mg with Concor 10mg ten days back and since that day I am suffering from severe itching on my scrotum and penis. The itch stays for 5-10 minutes and I am forced to rub both my scrotum and penis vigorusly which eventually takes me to masturbation.
Reply the comment

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 potassium?

Comments from related studies:

  • From this study (4 days ago):

  • Eye twitches but not all the time


  • From this study (7 days ago):

  • Redness and blotch unless on all area of my face


  • From this study (1 week ago):

  • Most of these symptoms started with the use of cozaar. I would like to cease using this drug since the confusion and memory loss is becoming acute and intolerable


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    I avoided going to the doctor for years and decided it was time to bite the bullet. The bullet bit back. High Blood pressure and cholesterol. Doc prescribed me 100mg Losartan Potassium right out of the gate. At 33 years old, this concerns me. I've been on it for about a week and have had a constant moderate headache along with some slight dizziness/foggy feeling. I also noticed some ringing in my ears a few times as well. Going back to the doc today. My pharmacist says they usually start people on lower doses than 100 mg. Anyone else dealing with something similar?
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    I was going through the menopause with all the usual drama when I started feeling awful. Doc said that my blood pressure was through the roof and prescribed Lisinopril. This gave me technicolour dreams and a runny nose, so he switched me to Losartan. This made me soooo tired that I didn't want to get up. So then I tried Amlopidine. Fantastic! I haven't felt this well since I was on my teens. My message is ... don't put up with side effects. Change your drug until you find the one that works for you.
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More reviews for: Losartan potassium

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

What is Losartan Potassium used for and how effective is it:

Other drugs that are used to treat the same conditions:

Studies of common Losartan potassium drug interactions:

Browse Losartan potassium 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).

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