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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 12,923 people who have side effects while taking Losartan from FDA and social media, and is updated regularly.

Get connected: join a mobile support group for people who have Losartan side effects >>>

What is Losartan

Losartan (latest outcomes from 14,007 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 Oct, 13, 2014: 12,923 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
HeadacheDizzinessDizzinessIschaemic StrokeHypertensionHypertensionBlood Pressure IncreasedDyspnoea
Blood Pressure IncreasedRenal Failure AcuteErectile DysfunctionHyperkalaemiaHeart Rate IncreasedDizzinessUrinary Tract InfectionDizziness
InfectionDiarrhoeaLiver DisorderAngioedemaDiarrhoeaMuscle SpasmsOedema PeripheralNausea
Drug IneffectiveHeadacheNauseaBlood Pressure IncreasedPanic AttackConstipationFace OedemaPain
Erythema MultiformeLiver DisorderDyspnoeaBronchopneumoniaIrritable Bowel SyndromeRenal FailurePruritusDiarrhoea
Nephrotic SyndromeVomitingFatigueRenal Failure ChronicNauseaNeurogenic BladderLymphadenopathyHeadache
NauseaBlood Pressure IncreasedMalaiseCold SweatAnaemiaDepressionPriapismArthralgia
DyspnoeaAngioedemaHeadacheHeadacheGastrointestinal HaemorrhageVertigoSwollen TongueAsthenia
Oedema PeripheralAbdominal PainCollagen DisorderCerebral IschaemiaPneumoniaPulmonary HaemorrhageTongue OedemaDrug Ineffective

Most common side effects by gender * :


Most common side effects by age * :

Exposure To Communicable DiseaseDevice Related InfectionInfectionConvulsionMalaiseDyspnoeaDyspnoeaNausea
Blood Pressure IncreasedRenal Failure AcuteSystemic Lupus ErythematosusOedema PeripheralPyrexiaHeadacheArthralgiaDizziness
VomitingHenoch-schonlein PurpuraLupus NephritisArthralgiaFatigueFatigueNauseaDyspnoea
Loss Of ConsciousnessHypertensionPyrexiaArrhythmiaRenal FailureNauseaDizzinessFatigue
Cardiac ArrestFatigueHypertensionDiarrhoeaHypotensionHypertensionPainDiarrhoea
Foetal Growth RestrictionHypotensionDyspnoeaUrinary Tract InfectionDiarrhoeaPyrexiaHeadacheAsthenia
OligohydramniosOedema NosBlood Creatinine IncreasedPlatelet Count DecreasedConvulsionCoughDrug IneffectivePyrexia
Congenital Renal DisorderAnaemia NosRenal FailureCondition AggravatedUrinary Tract InfectionRashFatigueHeadache
Pulmonary EmbolismProteinuria PresentHypotensionDyspnoeaPainDizzinessHypotensionMalaise
ProteinuriaSeptic Arthritis StaphylococcalRenal ImpairmentBlood Pressure IncreasedNauseaPain In ExtremityPyrexiaVomiting

* 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?

Comments from related studies:

  • From this study (4 days ago):

  • I stopped taking the Cozaar for a five days to experiment because my bp was running so low and the bleeding stopped ... I started it again yesterday and the bleeding started.


  • From this study (5 days ago):

  • Only one week into taking the losartan and amlodipine, blurred vision and fatique are quite noticeable.


  • From this study (2 weeks ago):

  • Losartan was prescribed to slow down any possible aortic dissection which is common amongst people who have Marfan's syndrome. I have an atypical form of Marfan's but have some of the genetic markers (height, pigeon chest, history of tall parent dying from aortic dissection)
    Amitriptyline is taken as a small does 30mg at night to help with night headaches probably caused by some nerve damage in neck following an old whiplash injury.


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Can you answer these questions (what is this?):

More questions for: Losartan

You may be interested at these reviews (what is this?):

  • Blood in urine after taking lovasartan potassium for a year.
    Took 25mg per day for more than a year and started to have blood and clots in my urine. I had a TURP about 5 years ago.

  • Losartan potassium headaches
    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 cons ...

  • High blood pressure - find the right medication
    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 ...

More reviews for: 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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