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Quick summary

Type of medicine

Cough Syrup



Active Ingredient

Dextromethorphan Hydrobromide

Effective within

Varies by individual; usually within 15-30 minutes

Works by

Providing relief from dry, irritating coughs

Side effects

Nausea, Dizziness, Drowsiness, Vomiting, Headache

Medication details


Robitussin Dry Cough 100ml is a liquid cough syrup formulated to target dry, irritating coughs. This medication is non-prescription and is available in a 100ml bottle. It is suitable for adults and children over 12 years old.


Proper usage of Robitussin Dry Cough 100ml is crucial for achieving effective relief from dry coughs. Follow these directions carefully:
Dosage: Shake the bottle well before use. For adults and children over 12 years old, take one 10ml (two 5ml spoonfuls) dose every 4-6 hours if necessary. Do not exceed four doses in 24 hours.
Measure Accurately: Use the provided measuring spoon or cup to ensure accurate dosage.
Do Not Dilute: Do not dilute the medication with water or other liquids.
Timing: Take the medication with or without food, as per your preference.
Duration: Use Robitussin Dry Cough 100ml for as long as symptoms persist, but do not use it for more than seven days without consulting a healthcare professional.


Robitussin Dry Cough 100ml's effectiveness is attributed to its active ingredient, dextromethorphan hydrobromide. This ingredient acts as a cough suppressant, helping to reduce the urge to cough.

Side Effects

Robitussin Dry Cough 100ml is generally well-tolerated, but some individuals may experience mild side effects. These side effects are typically temporary and may include:
Dizziness: Some users may experience mild dizziness or lightheadedness.
Nausea: In rare cases, Robitussin Dry Cough 100ml may lead to nausea or an upset stomach.
Drowsiness: Dextromethorphan can cause drowsiness in some individuals. If affected, avoid activities that require alertness, such as driving or operating heavy machinery.
Allergic Reactions: Although rare, some individuals may experience allergic reactions to the ingredients. Discontinue use and seek medical attention if you notice any signs of an allergic reaction, such as rash, itching, swelling, or severe dizziness.


To ensure the safe and effective use of Robitussin Dry Cough 100ml, consider the following warnings and precautions:
Consult a Healthcare Professional: If you have any underlying medical conditions, are pregnant, breastfeeding, or are currently taking other medications, consult a healthcare provider before using Robitussin Dry Cough 100ml.
Cough Assessment: If your cough persists or worsens after using this medication for seven days, seek medical advice as it may be a sign of an underlying condition that requires further evaluation.
Avoid Alcohol: Do not consume alcohol while taking Robitussin Dry Cough 100ml, as it may increase the risk of drowsiness and other side effects.
Storage: Store Robitussin Dry Cough 100ml in a cool, dry place, away from direct sunlight and excessive heat.

Medically reviewed and published

  • This page was medically reviewed by Dr Sohaib Imtiaz, Clinical Lead on Oct 5, 2023, 2:30 pm

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Please read our FAQs page to find out more.

Can I use Robitussin Dry Cough 100ml if I have allergies or sensitivities to medications?

Robitussin Dry Cough 100ml contains dextromethorphan hydrobromide as its active ingredient. If you have known allergies or sensitivities to this or other cough medications, it's advisable to consult with a healthcare provider before use.

Is Robitussin Dry Cough 100ml safe for children under 12 years old?

No, Robitussin Dry Cough 100ml is formulated for adults and children aged 12 and above. For children younger than 12, consult with a healthcare provider for appropriate cough relief options.

Can I take Robitussin Dry Cough 100ml along with other cough or cold medications?

Combining cough or cold medications can increase the risk of side effects or drug interactions. It's essential to consult with a healthcare provider or pharmacist before using Robitussin Dry Cough 100ml alongside other medications to ensure safety and effectiveness.

How long should I wait before driving or operating machinery after taking Robitussin Dry Cough 100ml?

Drowsiness is a potential side effect of dextromethorphan, the active ingredient in Robitussin Dry Cough 100ml. It is advisable to avoid activities that require mental alertness, such as driving or operating heavy machinery, until you are certain of your response to the medication.

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