Skip to content
My WebMD Sign In, Sign Up

Singulair oral

Does Singulair oral have side effects?

The following side effects are associated with Singulair oral:

Common side effects of Singulair oral:

Abnormal Liver Function TestsSevere
Throat IrritationLess Severe
Acute Infection of the Nose, Throat or SinusLess Severe
FeverLess Severe
Head PainLess Severe
CoughLess Severe

Infrequent side effects of Singulair oral:

The FluSevere
Skin InfectionSevere
Middle Ear InfectionLess Severe
Inflammation of the NoseLess Severe
Sinus Irritation and CongestionLess Severe
Stuffy NoseLess Severe
ToothacheLess Severe
DizzyLess Severe
Low EnergyLess Severe
RashLess Severe
DiarrheaLess Severe
Stomach CrampsLess Severe
Infection of the Stomach and IntestinesLess Severe
Feeling WeakLess Severe

Rare side effects of Singulair oral:

Feeling Anger Toward SomethingSevere
Pink EyeSevere
Allergic Reaction causing Inflammation of Blood VesselsSevere
Pneumonia with High Amount of Eosinophil White Blood CellsSevere
Erythema MultiformeSevere
Toxic Epidermal NecrolysisSevere
Stevens-Johnson SyndromeSevere
Skin Condition Marked by Red and Painful NodulesSevere
White Blood Cells in Urine in Response to InfectionSevere
Giant HivesSevere
Allergic Reaction caused by a DrugSevere
Inflammation of the Liver with Stoppage of Bile FlowSevere
Decreased Blood PlateletsSevere
Increased Eosinophils in the BloodSevere
Having Thoughts of SuicideSevere
Feeling RestlessLess Severe
DepressionLess Severe
Aggressive BehaviorLess Severe
Abnormal DreamsLess Severe
SleepwalkingLess Severe
Disturbance of AttentionLess Severe
Inflammation of the Voice BoxLess Severe
IndigestionLess Severe
Infection caused by a VirusLess Severe
EczemaLess Severe
Inflammation of Skin caused by an AllergyLess Severe
ItchingLess Severe
Joint PainLess Severe
Muscle PainLess Severe
CrampsLess Severe
DrowsinessLess Severe
Loss of MemoryLess Severe
HallucinationLess Severe
Chronic Trouble SleepingLess Severe
Involuntary QuiveringLess Severe
NumbnessLess Severe
Visible Water RetentionLess Severe
Heart Throbbing or PoundingLess Severe
Feel Like Throwing UpLess Severe
Throwing UpLess Severe
NervousLess Severe
BruiseLess Severe
Numbness and TinglingLess Severe
Easily Angered or AnnoyedLess Severe
ConfusedLess Severe
AnxiousLess Severe

See 463 Reviews for this Drug. - OR -

Review this Treatment

Find a Drug:

by name or medical condition or shape/color (Pill Identifier)

(for example: aspirin)

(for example: diabetes)

Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Ask the pharmacist

Questions about medications? Get expert answers by video or live chat about allergies, pregnancy, sleep, and more.
See the Ask the Pharmacist event schedule.

Ask a Question

Popular Slideshows & Tools on WebMD

hands on abdomen
Can you catch one?
Woman sitting in front of UV lights
Is yours working?
woman using breath spray
What's causing yours?
womans hand on abdomen
Are you ready for baby?
MS Overview
Recognizing symptoms.
bowl of yogurt with heart shape
Eat for a healthy heart.
woman doing pushups
To help you get fit.
Colored x-ray of tooth decay
Know what to look for.
Woman sitting with child
Do you know the symptoms?
Stings, bites, burns, and more.
Allentown, PA
Are you living in one?
Thyroid exam
See how much you know.

Women's Health Newsletter

Find out what women really need.

WebMD the app

Get trusted health information. Whenever. Wherever... with your iPhone, iPad or Android.

Find Out More

IMPORTANT: About This Section and Other User-Generated Content on WebMD

The opinions expressed in WebMD User-generated content areas like communities, reviews, ratings, or blogs are solely those of the User, who may or may not have medical or scientific training. These opinions do not represent the opinions of WebMD. User-generated content areas are not reviewed by a WebMD physician or any member of the WebMD editorial staff for accuracy, balance, objectivity, or any other reason except for compliance with our Terms and Conditions. Some of these opinions may contain information about treatment or uses of drug products that have not been approved by the U.S. Food and Drug Administration. WebMD does not endorse any specific product, service, or treatment.

Do not consider WebMD User-generated content as medical advice. Never delay or disregard seeking professional medical advice from your doctor or other qualified healthcare provider because of something you have read on WebMD. You should always speak with your doctor before you start, stop, or change any prescribed part of your care plan or treatment. WebMD understands that reading individual, real-life experiences can be a helpful resource but it is never a substitute for professional medical advice, diagnosis, or treatment from a qualified health care provider. If you think you may have a medical emergency, call your doctor or dial 911 immediately.