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Drug information

Benylin Guaifenesin

OTC
Read time: 6 mins
Last updated: 06 May 2020

Summary of product characteristics


1. Name of the medicinal product

Benylin Mucus Cough Max Menthol flavour 100 mg/5 ml Oral Solution


2. Qualitative and quantitative composition

This product contains 20 mg guaifenesin in each ml (100mg in 5ml).

Excipient(s) with known effect

Ethanol

39.7mg/ml

Ponceau 4R (E124)

0.05mg/ml

Macrogol glycerol hydroxystearate 40

3.0 mg/ml

Sodium benzoate (E211)

1 mg/ml

Propylene glycol (E1520)

200.35 mg/ml

For the full list of excipients, see section 6.1.


3. Pharmaceutical form

Oral solution

Clear to slightly opalescent red liquid


4.1. Therapeutic indications

Benylin Mucus Cough Max Menthol Flavour 100 mg/ 5 ml Oral Solution is indicated to help loosen phlegm and thin bronchial secretions associated with productive cough, for use in adults and adolescents over 12 years.


4.2. Posology and method of administration

Posology

Adults and adolescents over 12 years:

10 ml (200mg guaifenesin) 4 times a day.

Maximum daily dose: 40ml (800mg guaifenesin)

Paediatric population

The safety and efficacy of Benylin Mucus Cough Max Menthol Flavour 100 mg/5 ml Oral Solution in children under 12 years of age has not yet been established.

No data are available.

Elderly:

As per adults.

Hepatic/renal impairment

Caution should be exercised in severe hepatic and severe renal impairment.

If cough persists for more than 7 days, tends to recur, or is accompanied by a fever, rash, or persistent headache, a physician should be consulted.

Method of administration

Oral


4.3. Contraindications

Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.


4.4. Special warnings and precautions for use

This product should not be used for persistent or chronic cough, such as occurs with asthma, or where cough is accompanied by excessive secretions, unless directed by a physician.

A persistent cough may be a sign of a serious condition. If cough persists for more than 7 days, tends to recur, or is accompanied by a fever, rash, or persistent headache, a physician should be consulted.

Caution should be exercised when using the product in the presence of severe renal or severe hepatic impairment.

The concomitant use of cough suppressants is not recommended.

This medicinal product contains 10 mg of benzoate salt in each 10 ml dose.

This medicinal product may contain very trace amounts of glucose. Patients with rare glucose galactose malabsorption should not take this medicine.

A dose of 10 ml of this medicine administered to a child 12 years of age and weighing 35 kg would result in exposure to 10.9 mg/kg of ethanol which may cause a rise in blood alcohol concentration (BAC) of about 1.81 mg/100 ml. A dose of 10 ml of this medicine administered to an adult weighing 70 kg would result in an exposure of 5.4 mg/kg of ethanol which may cause a rise in blood alcohol concentration (BAC) of about 0.9 mg/100 ml. (see Appendix 1 of report EMA/CHMP/43486/2018).

For comparison, for an adult drinking a glass of wine or 500 ml of beer, the BAC is likely to be about 50 mg/100 ml.

Co-administration with medicines containing e.g. propylene glycol or ethanol may lead to accumulation of ethanol and induce adverse effects, in particular in young children with low or immature metabolic capacity.

This product contains Ponceau 4R (E124) red colouring which may cause allergic reactions.

This medicinal product contains less than 1 mmol sodium (23 mg) per 10 ml dose, that is to say essentially 'sodium-free'.

This medicinal product contains 2003.5 mg propylene glycol in each 10 ml dose. While propylene glycol has not been shown to cause reproductive or developmental toxicity in animals or humans, it may reach the foetus and was found in milk. As a consequence, administration of propylene glycol to pregnant or lactating patients should be considered on a case by case basis. Medical monitoring is required in patients with impaired renal or hepatic functions because various adverse events attributed to propylene glycol have been reported such as renal dysfunction (acute tubular necrosis), acute renal failure and liver dysfunction.

This medicinal product contains macrogol glycerol hydroxystearate 40. It may cause stomach upset and diarrhoea.


4.5. Interaction with other medicinal products and other forms of interaction

If urine is collected within 24 hours of a dose of this product a metabolite of guaifenesin may cause a colour interference with laboratory determinations of urinary 5-hydroxyindoleacetic acid 5-HIAA) and vanillylmandelic acid (VMA).

Expectorants such as guaifenesin should not be combined with cough suppressants in the treatment of cough since the combination is illogical and patients may be exposed to unnecessary adverse effects.

No interaction studies have been performed which revealed an interaction with guaifenesin.


4.6. Fertility, pregnancy and lactation

Pregnancy

There are no or limited amount of data from the use of guaifenesin in pregnant women. Animal studies are insufficient with respect to reproductive toxicity (see section 5.3). Benylin Mucus Cough Max Menthol Flavour 100 mg/5 ml Oral Solution is not recommended during pregnancy and in women of childbearing potential not using contraception.

Breast-feedingGuaifenesin is excreted in breast milk in small amounts. There is insufficient information on the effects of guaifenesin in newborns/infants. A decision must be made whether to discontinue breast-feeding or to discontinue/abstain from Benylin Mucus Cough Max Menthol flavour 100 mg/5 ml Oral Solution therapy, taking into account the benefit of breast feeding for the child and the benefit of therapy for the woman.

FertilityThere is insufficient information available to determine whether guaifenesin has the potential to impair fertility.


4.7. Effects on ability to drive and use machines

Guaifenesin has no or negligible influence on the ability to drive and use machines.


4.8. Undesirable effects

The following side effects may be associated with the use of guaifenesin:

Immune System Disorders: Hypersensitivity reactions including pruritus and urticaria, rash (frequency – not known).

Gastrointestinal disorders: Abdominal pain upper, diarrhoea, nausea, vomiting (frequency – not known).

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.


4.9. Overdose

Symptoms and signs

The symptoms and signs of overdose may include gastro-intestinal discomfort, nausea and drowsiness.

When taken in excess, guaifenesin may cause renal calculi.

Management

Treatment should be symptomatic and supportive.


5.1. Pharmacodynamic properties

Pharmacotherapeutic Group: Cough and Cold Preparations, Expectorants, ATC Code: R05CA03

Mechanism of action

This product is thought to exert its pharmacological action by stimulating receptors in the gastric mucosa. This increases the output from secretory glands of the gastrointestinal system and reflexly increases the flow of fluids from glands lining the respiratory tract. The result is an increase in volume and decrease in viscosity of bronchial secretions. Other actions may include stimulating vagal nerve endings in bronchial secretory glands and stimulating certain centres in the brain, which in turn enhance respiratory fluid flow. Guaifenesin produces its expectorant action within 24 hours.


5.2. Pharmacokinetic properties

There is no information available on the pharmacokinetics of guaifenesin in special populations.

Absorption

Guaifenesin is well absorbed from the gastro-intestinal tract following oral administration, although limited information is available on its pharmacokinetics. After the administration of 600 mg guaifenesin to healthy adult volunteers, the Cmax was approximately 1.4 ug/ml, with tmax occurring approximately 15 minutes after drug administration.

Distribution

No information is available on the distribution of guaifenesin in humans.

Biotransformation and elimination

Guaifenesin appears to undergo both oxidation and demethylation. Following an oral dose of 600 mg guaifenesin to 3 healthy male volunteers, the t½ was approximately 1 hour and the drug was not detectable in the blood after approximately 8 hours.

Guaifenesin is excreted predominantly in the urine with no unchanged amounts when taken orally in prescribed doses.


5.3. Preclinical safety data

Carcinogenicity

There is insufficient information available to determine whether guaifenesin has carcinogenic potential.

Mutagenicity

There is insufficient information available to determine whether guaifenesin has mutagenic potential.

Teratogenicity

There is insufficient information available to determine whether guaifenesin has teratogenic potential.

Fertility

There is insufficient information available to determine whether guaifenesin has the potential to impair fertility.


6.1. List of excipients

Xanthan gum

Sodium chloride

Saccharin sodium

Ammonium glycyrrhizate

Sodium benzoate (E211)

Citric acid

Sodium citrate

Macrogol glycerol hydroxystearate 40

Levomenthol

Raspberry flavour F2126 (includes ethanol)

Caramel (E150)

Ponceau 4R (E124)

Glycerol

Macrogol 1500

Propylene glycol (E1520)

Ethanol 96%

Purified water


6.2. Incompatibilities

Not applicable.


6.3. Shelf life

3 years

In-use: 4 weeks


6.4. Special precautions for storage

Do not store above 25°C

Store in the original container to protect from light


6.5. Nature and contents of container

Type III, Amber glass bottle, containing 150ml, fitted with:

A plastic child resistant cap fitted with a PET-faced wad.


6.6. Special precautions for disposal and other handling

No special requirements.

Any unused medicinal product should be disposed of in accordance with local requirements.


7. Marketing authorisation holder

McNeil Products Limited

50 - 100 Holmers Farm Way

High Wycombe

Buckinghamshire

HP12 4EG

UK


8. Marketing authorisation number(s)

PL 15513/0165


9. Date of first authorisation/renewal of the authorisation

5 May 2010 / 02 Aug 2018


10. Date of revision of the text

06 Feb 2021.

4.1 Therapeutic indications

Benylin Mucus Cough Max Menthol Flavour 100 mg/ 5 ml Oral Solution is indicated to help loosen phlegm and thin bronchial secretions associated with productive cough, for use in adults and adolescents over 12 years.

4.2 Posology and method of administration

Posology

Adults and adolescents over 12 years:

10 ml (200mg guaifenesin) 4 times a day.

Maximum daily dose: 40ml (800mg guaifenesin)

Paediatric population

The safety and efficacy of Benylin Mucus Cough Max Menthol Flavour 100 mg/5 ml Oral Solution in children under 12 years of age has not yet been established.

No data are available.

Elderly:

As per adults.

Hepatic/renal impairment

Caution should be exercised in severe hepatic and severe renal impairment.

If cough persists for more than 7 days, tends to recur, or is accompanied by a fever, rash, or persistent headache, a physician should be consulted.

Method of administration

Oral

4.3 Contraindications

Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.

4.4 Special warnings and precautions for use

This product should not be used for persistent or chronic cough, such as occurs with asthma, or where cough is accompanied by excessive secretions, unless directed by a physician.

A persistent cough may be a sign of a serious condition. If cough persists for more than 7 days, tends to recur, or is accompanied by a fever, rash, or persistent headache, a physician should be consulted.

Caution should be exercised when using the product in the presence of severe renal or severe hepatic impairment.

The concomitant use of cough suppressants is not recommended.

This medicinal product contains 10 mg of benzoate salt in each 10 ml dose.

This medicinal product may contain very trace amounts of glucose. Patients with rare glucose galactose malabsorption should not take this medicine.

A dose of 10 ml of this medicine administered to a child 12 years of age and weighing 35 kg would result in exposure to 10.9 mg/kg of ethanol which may cause a rise in blood alcohol concentration (BAC) of about 1.81 mg/100 ml. A dose of 10 ml of this medicine administered to an adult weighing 70 kg would result in an exposure of 5.4 mg/kg of ethanol which may cause a rise in blood alcohol concentration (BAC) of about 0.9 mg/100 ml. (see Appendix 1 of report EMA/CHMP/43486/2018).

For comparison, for an adult drinking a glass of wine or 500 ml of beer, the BAC is likely to be about 50 mg/100 ml.

Co-administration with medicines containing e.g. propylene glycol or ethanol may lead to accumulation of ethanol and induce adverse effects, in particular in young children with low or immature metabolic capacity.

This product contains Ponceau 4R (E124) red colouring which may cause allergic reactions.

This medicinal product contains less than 1 mmol sodium (23 mg) per 10 ml dose, that is to say essentially 'sodium-free'.

This medicinal product contains 2003.5 mg propylene glycol in each 10 ml dose. While propylene glycol has not been shown to cause reproductive or developmental toxicity in animals or humans, it may reach the foetus and was found in milk. As a consequence, administration of propylene glycol to pregnant or lactating patients should be considered on a case by case basis. Medical monitoring is required in patients with impaired renal or hepatic functions because various adverse events attributed to propylene glycol have been reported such as renal dysfunction (acute tubular necrosis), acute renal failure and liver dysfunction.

This medicinal product contains macrogol glycerol hydroxystearate 40. It may cause stomach upset and diarrhoea.

4.5 Interaction with other medicinal products and other forms of interaction

If urine is collected within 24 hours of a dose of this product a metabolite of guaifenesin may cause a colour interference with laboratory determinations of urinary 5-hydroxyindoleacetic acid 5-HIAA) and vanillylmandelic acid (VMA).

Expectorants such as guaifenesin should not be combined with cough suppressants in the treatment of cough since the combination is illogical and patients may be exposed to unnecessary adverse effects.

No interaction studies have been performed which revealed an interaction with guaifenesin.

4.6 Fertility, pregnancy and lactation

Pregnancy

There are no or limited amount of data from the use of guaifenesin in pregnant women. Animal studies are insufficient with respect to reproductive toxicity (see section 5.3). Benylin Mucus Cough Max Menthol Flavour 100 mg/5 ml Oral Solution is not recommended during pregnancy and in women of childbearing potential not using contraception.

Breast-feedingGuaifenesin is excreted in breast milk in small amounts. There is insufficient information on the effects of guaifenesin in newborns/infants. A decision must be made whether to discontinue breast-feeding or to discontinue/abstain from Benylin Mucus Cough Max Menthol flavour 100 mg/5 ml Oral Solution therapy, taking into account the benefit of breast feeding for the child and the benefit of therapy for the woman.

FertilityThere is insufficient information available to determine whether guaifenesin has the potential to impair fertility.

4.7 Effects on ability to drive and use machines

Guaifenesin has no or negligible influence on the ability to drive and use machines.

4.8 Undesirable effects

The following side effects may be associated with the use of guaifenesin:

Immune System Disorders: Hypersensitivity reactions including pruritus and urticaria, rash (frequency – not known).

Gastrointestinal disorders: Abdominal pain upper, diarrhoea, nausea, vomiting (frequency – not known).

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

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Medthority will not be held liable for explicit or implicit errors, or missing data.

Reporting of suspected adverse reactions 

Drug Licencing

Drugs appearing in this section are approved by UK Medicines & Healthcare Products Regulatory Agency (MHRA), & the European Medicines Agency (EMA).