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Review: taking Coumadin and Flomax together

Summary: drug interactions are reported among people who take Coumadin and Flomax together.

This review analyzes the effectiveness and drug interactions between Coumadin and Flomax. It is created by eHealthMe based on reports of 2,275 people who take the same drugs from FDA and social media, and is updated regularly.


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On Apr, 6, 2015: 2,275 people who take Coumadin, Flomax are studied

Coumadin, Flomax outcomes

Drug combinations in study:
- Coumadin (warfarin sodium)
- Flomax (tamsulosin hydrochloride)

Drug effectiveness over time :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Coumadin is effectiven/a42.86%
(3 of 7 people)
(3 of 3 people)
(3 of 7 people)
(6 of 9 people)
(6 of 7 people)
(4 of 7 people)
Flomax is effective0.00%
(0 of 2 people)
(4 of 6 people)
(2 of 8 people)
(0 of 2 people)
(3 of 8 people)
(2 of 8 people)
(2 of 3 people)
(2 of 2 people)

Drug effectiveness by gender :

Coumadin is effective100.00%
(1 of 1 people)
(24 of 39 people)
Flomax is effective100.00%
(1 of 1 people)
(14 of 38 people)

Drug effectiveness by age :

Coumadin is effectiven/an/an/an/an/a100.00%
(2 of 2 people)
(4 of 9 people)
(19 of 36 people)
Flomax is effectiven/an/an/an/an/a100.00%
(2 of 2 people)
(1 of 8 people)
(12 of 39 people)

Most common drug interactions over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
DizzinessRenal Failure AcuteEmotional DistressNauseaAnaemiaDizzinessHead InjuryAtrial Fibrillation
Disseminated Intravascular CoagulationRenal FailureStressRashMyocardial IschaemiaAstheniaBacterial ArthritisPain
Platelet Count DecreasedInjuryRenal InjuryMalaiseSyncopeProstate CancerLoss Of ConsciousnessFatigue
Haemolytic AnaemiaAnxietyAnxietyAtrial FibrillationUpper Gastrointestinal HaemorrhageProstatic Specific Antigen IncreasedOrthostatic HypotensionDizziness
HaematuriaRenal ImpairmentRenal FailureAnaemiaMelaenaRectal HaemorrhageBone And Joint PainDyspnoea
Renal Failure AcuteDisseminated Intravascular CoagulationPainSubdural HaematomaDyspnoeaDiverticulum NosUpper Gastrointestinal HaemorrhageOedema Peripheral
ThrombosisPainRenal ImpairmentWeight DecreasedInternational Normalised Ratio IncreasedFallMuscle PainAsthenia
ThrombocytopeniaAnhedoniaAnhedoniaDecreased AppetiteDehydrationCerebrovascular AccidentDizzinessCardiac Failure Congestive
Blood Creatinine IncreasedPlatelet Count DecreasedFearLower Gastrointestinal HaemorrhageFailure To ThriveElevated Liver EnzymesEarly Morning Joint StiffnessPneumonia
AnaemiaSyncopeInjuryDrug ToxicityMyocardial InfarctionOrthostatic HypotensionMultiple MyelomaFall

Most common drug interactions by gender * :

AnaemiaAtrial Fibrillation
Cardiac Failure CongestivePain
Ventricular FibrillationFatigue
Pleural EffusionDyspnoea
Urinary Tract InfectionOedema Peripheral
Abdominal PainAsthenia
Urinary RetentionCardiac Failure Congestive
Gastrooesophageal Reflux DiseasePneumonia

Most common drug interactions by age * :

n/an/aMelaenan/aRash PruriticRenal Failure AcuteDyspnoeaAtrial Fibrillation
International Normalised Ratio IncreasedRash PapularCardiac DisorderPyrexiaFatigue
EpistaxisRashDisseminated Intravascular CoagulationDiarrhoeaCardiac Failure Congestive
ConfusionSkin OedemaHaematuriaAtrial FibrillationDizziness
Abdominal Pain LowerPainPyrexiaPainPain
Mobility DecreasedPainHypotensionAsthenia
FibrosisHerpes ZosterOedema PeripheralOedema Peripheral
Nephrogenic Systemic FibrosisFallAnxietyDyspnoea
Emotional DistressDizzinessOsteomyelitisPneumonia
AnxietyArrhythmiaPain In JawInternational Normalised Ratio Increased

* Some reports may have incomplete information.

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.

Do you take Coumadin and Flomax?




You are not alone! Join a related support group:
- support group for people who take Coumadin
- support group for people who take Flomax

Recent related drug studies (Check your drugs):

Complete drug side effects:

On eHealthMe, Coumadin (warfarin sodium) is often used to treat blood clots. Flomax (tamsulosin hydrochloride) is often used to treat enlarged prostate. Find out below the conditions the drugs are used for, how effective they are, and any alternative drugs that you can use to treat those same conditions.

What is the drug used for and how effective is it:

Other drugs that are used to treat the same conditions:

NOTE: The study is based on active ingredients. Other drugs that have the same active ingredients are also 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.

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