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Review: taking Claritin and Coumadin together

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

This review analyzes the effectiveness and drug interactions between Claritin and Coumadin. It is created by eHealthMe based on reports of 1,488 people who take the same drugs from FDA and social media, and is updated regularly.


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On Mar, 29, 2015: 1,488 people who take Claritin, Coumadin are studied

Claritin, Coumadin outcomes

Drug combinations in study:
- Claritin (loratadine)
- Coumadin (warfarin sodium)

Drug effectiveness over time :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Claritin is effective40.00%
(2 of 5 people)
(1 of 3 people)
(0 of 2 people)
(3 of 6 people)
(2 of 3 people)
(1 of 3 people)
Coumadin is effective100.00%
(1 of 1 people)
(2 of 6 people)
(3 of 5 people)
(3 of 5 people)
(3 of 3 people)
(2 of 2 people)
(1 of 1 people)

Drug effectiveness by gender :

Claritin is effective53.85%
(7 of 13 people)
(2 of 9 people)
Coumadin is effective57.14%
(8 of 14 people)
(7 of 9 people)

Drug effectiveness by age :

Claritin is effectiven/an/an/an/an/a37.50%
(3 of 8 people)
(2 of 3 people)
(4 of 20 people)
Coumadin is effectiven/an/an/an/an/a66.67%
(6 of 9 people)
(1 of 4 people)
(8 of 20 people)

Most common drug interactions over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
International Normalised Ratio IncreasedOedema PeripheralMastocytosisHallucinationGallbladder DisorderArthralgiaInternational Normalised Ratio IncreasedPain
Renal FailureHeadacheSudden Cardiac DeathGallbladder CancerPainAtrial FibrillationHaemoglobin DecreasedDyspnoea
EpistaxisChest PainFatigueDiarrhoeaMental DisorderBlood UrineOccult Blood PositiveAnxiety
NeutropeniaTransient Ischaemic AttackAnxietyMitral Valve ProlapseThrombosisGingival BleedingFatigue
InfectionDyspnoeaMalaiseMaternal Drugs Affecting FoetusInternational Normalised Ratio IncreasedDizzinessNausea
Atrial FibrillationCardiac Failure CongestiveVenous Thrombosis LimbIntra-uterine DeathHeadacheOedema PeripheralDepression
Pulmonary EmbolismSpinal OsteoarthritisSubdural HaematomaLaboratory Test AbnormalHallucinationHeadacheOedema Peripheral
ThrombocytopeniaMyocardial InfarctionDiabetes MellitusNeurological SymptomHypoaesthesiaArthralgia
ArthralgiaHaemorrhoidsGastrointestinal HaemorrhageVision BlurredSkin RashDizziness
Tumour Lysis SyndromeMajor DepressionHepatitis CCholecystitisHaemorrhageAsthenia

Most common drug interactions by gender * :

Oedema PeripheralNausea
NauseaOedema Peripheral
Cardiac Failure CongestiveArthralgia

Most common drug interactions by age * :

n/aMulti-organ FailurePulmonary EmbolismDrug IneffectiveDyskinesiaPainDepressionDyspnoea
DeathDeep Vein ThrombosisRed Cell AplasiaDepressionLeft Ventricular HypertrophyPainAnxiety
InjuryPulmonary InfarctionPainAnxietyCoughAnxietyPain
PainErythemaMental DisorderSpeech DisorderCataractArthralgiaDizziness
DepressionArthralgiaType 1 Diabetes MellitusDysphagiaDepressionOedema PeripheralAtrial Fibrillation
FearDry SkinMigrainePainPain In ExtremityOsteonecrosis Of JawAsthenia
Renal FailurePain Of SkinPulmonary EmbolismAnhedoniaArthralgiaNeuropathy PeripheralFatigue
AnxietyParaesthesia OralGallbladder DisorderUrinary Tract InfectionBack PainEmotional DistressCardiac Failure Congestive
HeadacheCardiac DisorderFatigueVision BlurredMouth UlcerationNausea
Decreased AppetiteRight Ventricular DysfunctionType 2 Diabetes MellitusVitreous FloatersDeformityOedema Peripheral

* 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 Claritin and Coumadin?




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

Recent related drug studies (Check your drugs):

Complete drug side effects:

On eHealthMe, Claritin (loratadine) is often used to treat allergies. Coumadin (warfarin sodium) is often used to treat blood clots. 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.

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

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