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Review: taking Singulair and Loratadine together

Summary: drug interactions are reported among people who take Singulair and Loratadine together.

This review analyzes the effectiveness and drug interactions between Singulair and Loratadine. It is created by eHealthMe based on reports of 2,381 people who take the same drugs from FDA and social media, and is updated regularly.


You are not alone: join a support group for people who take Singulair and Loratadine >>>

On Apr, 11, 2015: 2,380 people who take Singulair, Loratadine are studied

Singulair, Loratadine outcomes

Drug combinations in study:
- Singulair (montelukast sodium)
- Loratadine (loratadine)

Drug effectiveness over time :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Singulair is effective16.67%
(2 of 12 people)
(3 of 14 people)
(3 of 7 people)
(7 of 15 people)
(14 of 23 people)
(11 of 17 people)
(8 of 16 people)
Loratadine is effective9.09%
(1 of 11 people)
(2 of 14 people)
(3 of 7 people)
(1 of 11 people)
(12 of 30 people)
(6 of 20 people)
(6 of 12 people)

Drug effectiveness by gender :

Singulair is effective50.75%
(34 of 67 people)
(14 of 37 people)
Loratadine is effective36.23%
(25 of 69 people)
(6 of 36 people)

Drug effectiveness by age :

Singulair is effective0.00%
(0 of 1 people)
(3 of 8 people)
(2 of 8 people)
(6 of 27 people)
(5 of 13 people)
(16 of 48 people)
(10 of 34 people)
(6 of 28 people)
Loratadine is effective0.00%
(0 of 1 people)
(0 of 8 people)
(2 of 8 people)
(2 of 27 people)
(2 of 13 people)
(12 of 48 people)
(10 of 35 people)
(3 of 30 people)

Most common drug interactions over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
AggressionMyocarditis NosPetit Mal EpilepsyLeukocytoclastic VasculitisSuicidal IdeationCardiac DisorderPulmonary EmbolismAsthma
ConvulsionPulmonary EosinophiliaSuicidal IdeationTubulointerstitial NephritisDepressionAnxietyDizzinessDyspnoea
HeadacheAllergic Granulomatous AngiitisLoss Of ConsciousnessAllergic Granulomatous AngiitisNauseaDizzinessExhaustion, Fatigue, Lethargy, Tiredness, WearinessNausea
Cerebrovascular AccidentVentricular ExtrasystolesHallucination, AuditoryAnorexiaHeadachePulmonary EmbolismAnxietyPain
Abdominal DistensionCardiac Failure CongestiveWeight DecreasedMalaiseDiarrhoeaDiabetes MellitusParaesthesiaFatigue
Intentional Self-injurySuicidal IdeationVomitingPetit Mal EpilepsyAbdominal Pain UpperFatiguePanic AttackHeadache
FearChest PainPolyarteritis NodosaHyperglobulinaemiaCholelithiasisVertigoAlcohol AbuseAnxiety
HemicephalalgiaEosinophil Count IncreasedVasculitisNephritis InterstitialAllergic CystitisLow Turnover OsteopathyAnxiety AggravatedDepression
Thinking AbnormalOxygen Saturation DecreasedLoss Of LibidoVasculitisSyncopeUrinary Tract DisorderSuicide AttemptCough
AngerConstipationCholecystitis ChronicHaematuriaCholecystitis ChronicAtrial FibrillationDisturbance In AttentionChest Pain

Most common drug interactions by gender * :

AsthmaChest Pain
FatigueDrug Ineffective
Drug IneffectivePain

Most common drug interactions by age * :

Drug Exposure During PregnancyCryingSuicidal IdeationCholecystitis ChronicAnxietyDyspnoeaNauseaDyspnoea
Asthma AggravatedAggressionAsthmaPainAsthmaHeadacheDepressionAsthma
Conjunctival HyperaemiaSuicidal IdeationHeadacheNauseaInsomniaAsthmaAsthmaNausea
Eye DischargeAbnormal BehaviourCholecystitis ChronicCholelithiasisNauseaChest PainFatigueCough
Complications Of Maternal Exposure To Therapeutic DrugsVomiting NosNauseaGallbladder DisorderPulmonary EmbolismAnxietyHeadacheChronic Obstructive Pulmonary Disease
TachypnoeaPyrexiaAbdominal Pain UpperRespiratory FailureDepressionPainPyrexiaDrug Ineffective
Haematocrit DecreasedDepressionDyspnoeaAbdominal PainPainFatigueInsomniaPneumonia
Haemoglobin DecreasedFatigueCholelithiasisConvulsionWeight IncreasedDizzinessDiarrhoeaDizziness
Viral Infection NosSomnolenceDehydrationAsthmaCerebrovascular AccidentCoughConstipationCardiac Failure Congestive
Eye Disorder NosOverdoseBack PainPre-eclampsiaDyspnoeaPruritusFallDehydration

* 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.

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Do you take Singulair and Loratadine?




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

Recent related drug studies (Check your drugs):

Complete drug side effects:

On eHealthMe, Singulair (montelukast sodium) is often used to treat asthma. Loratadine (loratadine) is often used to treat allergies. 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).

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


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