Cough suppressants

• Some cough suppressants may cause drowsiness or dizziness.
• Avoid driving, operating machinery or other activities which require concentration if affected.
• Common side effects of cough suppressants may include nausea or vomiting, stomach upset and constipation.
• These effects are usually mild and will pass quickly.

The symptoms of a drug allergy include one or more of the following:

• Swollen face/eyes/lips/tongue
• Difficulty in breathing
• Itchy skin rashes over your whole body

If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately. 

​Inform your healthcare professional if:

• You are allergic to cough suppressants or any of the other ingredients of cough suppressants
• You are taking any long term medications, including supplements, traditional medications and herbal remedies
• You have history of asthma, lung diseases, difficulty urinating, seizures, high blood pressure, heart or liver diseases.
• You are pregnant, planning to become pregnant or breastfeeding

​Do let your healthcare professional know if you are taking any other long term medications, especially medications for mood disorders (e.g. Fluvoxamine), seizures (e.g. Phenytoin), runny nose (e.g. chlorpheniramine), muscle relaxants (e.g. Orphenadrine), sleeping pills (e.g. Lorazepam).

​Signs that your condition may require further medical attention include:

• Cough with thick yellow or green phlegm or mucus, or blood
• Fever more than 38.6⁰C
• Unintended weight loss
• Drenching night sweats
• Cough lasting for longer than 3-4 weeks
• Cough that happens after your start a new medication
• Development of new symptoms during self-treatment

If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately.