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Quick summary

Type of medicine

Cough Expectorant



Active Ingredient

Guaifenesin (100mg per 5ml)

Effective within

Varies by individual; typically provides relief within a short time after ingestion

Works by

Thinning and loosening mucus in the airways

Side effects

Nausea, vomiting, upset stomach, diarrhea, drowsiness

Medication details


Benylin Chesty Cough is a reputable over-the-counter medication specially formulated to provide relief from chesty coughs, which are often symptomatic of various respiratory conditions. Chesty coughs, characterized by the production of thick and stubborn mucus in the airways, can be particularly discomforting and disruptive to daily life. Benylin Chesty Cough is a clinically-proven product designed to alleviate these symptoms effectively.

This medication is a trusted choice for individuals seeking relief from chesty coughs. Its active ingredient, guaifenesin, serves as an expectorant that targets the root cause of chesty coughs. Guaifenesin works by thinning and loosening mucus in the respiratory passages, making it easier for individuals to expel the mucus and experience relief from chest congestion and associated symptoms.


When using Benylin Chesty Cough, it is essential to follow the recommended directions for safe and effective relief. Proper dosage and administration are crucial to achieving the desired outcomes without adverse effects.

Dosage: For adults and adolescents aged 12 and above, the recommended dosage is 10ml, equivalent to two 5ml spoonfuls, to be taken four times a day. It is vital not to exceed this specified dosage to avoid potential side effects or complications.

Usage: Before each use, it is recommended to shake the bottle well to ensure an even distribution of the medication. The provided measuring cup should be used for accurate dosing. Benylin Chesty Cough can be taken with or without food, depending on personal preference and comfort.

Duration: Benylin Chesty Cough should be used as needed to alleviate chesty cough symptoms. However, it is important not to use the product continuously for more than seven days without consulting a healthcare professional. Prolonged or excessive use without medical guidance may lead to adverse effects or mask underlying health issues that require attention.

Children: For children aged 6 to 12, the recommended dosage is 5ml, equivalent to one 5ml spoonful, administered four times a day. This pediatric dosage is specifically tailored to ensure safety and effectiveness in this age group. Benylin Chesty Cough is not suitable for children under the age of 6.


Understanding the active and inactive ingredients in Benylin Chesty Cough is essential for those considering its use. The active ingredient is the therapeutic component responsible for its effectiveness.

Active Ingredient:

- Guaifenesin (100mg per 5ml): Guaifenesin, the active ingredient in Benylin Chesty Cough, is an expectorant recognized for its ability to facilitate the thinning and loosening of mucus within the airways. By doing so, it assists in clearing the chest and alleviating the symptoms associated with chesty coughs.

Inactive Ingredients:

- Liquid Glucose: Used as a sweetening agent and to enhance the overall flavor of the medication.
- Sucrose: Provides sweetness to improve the taste and palatability of the product.
- Ethanol: A component of the solution that helps in the dispersion and dissolution of active and inactive ingredients. It is present in small amounts.
- E214 (Ethyl 4-Hydroxybenzoate): Ethyl 4-Hydroxybenzoate is a preservative used to maintain the shelf life of the product.
E218 (Methyl 4-Hydroxybenzoate): Methyl 4-Hydroxybenzoate, like its ethyl counterpart, is a preservative included to prevent the growth of microorganisms within the medication.
- Glycerol: Glycerol is used to provide a smoother texture to the product and enhance its mouthfeel.
- Sodium Citrate: This ingredient acts as a buffering agent to maintain the product's pH level and stability.
- Citric Acid Monohydrate: Citric Acid Monohydrate contributes to the overall acidity of the solution and aids in flavor enhancement.
- Sodium Saccharin: A sweetening agent that improves the taste of the medication.
Purified Water: The primary solvent used to create the liquid formulation.

Side Effects

While Benylin Chesty Cough is generally well-tolerated when used as directed, it is important to be aware of potential side effects. Monitoring for these adverse reactions is essential for your well-being.

Common side effects may include:

- Nausea: Some individuals may experience mild nausea when taking Benylin Chesty Cough. It is advisable to take the medication with food to mitigate this side effect.

- Vomiting: In rare cases, vomiting may occur after taking the medication. If vomiting persists, discontinue use and consult a healthcare professional.

- Upset Stomach: A sensation of stomach discomfort or unease may occur, although this side effect is generally mild.

- Diarrhea: Some users may experience loose stools or diarrhea as a side effect. It is advisable to stay hydrated if this occurs.

- Drowsiness: Benylin Chesty Cough may cause drowsiness in some individuals. It is recommended not to operate heavy machinery or engage in activities that require alertness if drowsiness is experienced.

If any severe or unusual side effects occur, discontinue use immediately and seek medical attention. It is important to note that not everyone will experience side effects, and many individuals use this medication without any adverse reactions.


Prior to using Benylin Chesty Cough, it is imperative to consider the following warnings and precautions to ensure your safety and well-being:

- Allergies: If you have a known allergy to any of the ingredients present in Benylin Chesty Cough, do not use the product. Allergic reactions can range from mild skin irritations to severe anaphylactic responses.

- Underlying Medical Conditions: If you have any underlying medical conditions, it is advisable to consult a healthcare professional before using this medication. Conditions such as liver problems or kidney problems may require specific considerations when using Benylin Chesty Cough.

- Chronic Cough: If you are experiencing a chronic cough, such as one resulting from smoking or underlying respiratory conditions like asthma, consult a healthcare provider before using this product. Chronic coughs may be indicative of more serious health issues that require professional evaluation and management.

- Pregnancy and Breastfeeding: If you are pregnant, planning to become pregnant, or breastfeeding, consult a healthcare professional before using Benylin Chesty Cough. It is important to assess the potential risks and benefits in these circumstances.

- Medication Interactions: If you are taking other medications, including those containing codeine or dextrometh

Medically reviewed and published

  • This page was medically reviewed by Dr Sohaib Imtiaz, Clinical Lead on Oct 11, 2023, 9:45 am

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Please read our FAQs page to find out more.

Can I use Benylin Chesty Cough if I have allergies or sensitivities to medications?

If you have known allergies or sensitivities to medications, it's essential to check the product's ingredient list to ensure it does not contain any substances to which you are allergic. Benylin Chesty Cough contains guaifenesin as its active ingredient, along with a list of inactive ingredients. If you are uncertain or have concerns about allergies, consult a healthcare professional before using this product.

Is it safe to use Benylin Chesty Cough with other over-the-counter or prescription medications?

While Benylin Chesty Cough is generally safe to use, it's crucial to consider potential interactions with other medications you may be taking. If you are currently using any other over-the-counter or prescription drugs, especially those containing codeine or dextromethorphan, consult a healthcare provider or pharmacist before using Benylin Chesty Cough to avoid any potential drug interactions.

Can I give Benylin Chesty Cough to my child under 6 years old?

No, Benylin Chesty Cough is not suitable for children under the age of 6. It is designed for adults and children aged 6 and older. For children under 6, consult a pediatrician or healthcare professional for appropriate cough relief options.

How long can I use Benylin Chesty Cough continuously to relieve my chesty cough?

It is recommended not to use Benylin Chesty Cough continuously for more than seven days without consulting a healthcare professional. Prolonged use without medical guidance may indicate an underlying health issue that needs further evaluation and treatment.

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