BENYLIN Chesty Coughs (Non-drowsy)

Benylin Mucus Cough

BENYLIN Chesty Coughs (Non-drowsy) contains 100 mg guaifenesin and 1.1 mg levomenthol in each 5 ml.

Clear red syrup

BENYLIN Chesty Coughs (Non-drowsy) is indicated for the symptomatic relief of cough.

Adults and children aged 12 years and over:

Oral. Two 5 ml spoonfuls four times a day.

Children under 12 years:

Benylin Chesty Coughs (Non Drowsy) is contraindicated in children under the age of 12 years (see section 4.3).

The Elderly:

As for adults.

Hepatic/renal dysfunction

Experience with the use of this product suggests that normal adult dosage is appropriate for mild to moderate dysfunction. Caution should be exercised in severe hepatic and severe renal impairment. [See Pharmacokinetics].

Do not exceed the stated dose.

Keep out of the reach and sight of children.

BENYLIN Chesty Coughs (Non-drowsy) is contraindicated in individuals with known hypersensitivity to the product, or any of its components.

Not to be used in children under the age of 12 years.

BENYLIN Chesty Coughs (Non-drowsy) should be not used for persistent or chronic cough, such as occurs with asthma, or where cough is accompanied by excessive secretions, unless directed by a physician.

Caution should be exercised when using the product in the presence of severe renal or severe hepatic impairment, [See Pharmacokinetics].

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

Insufficient information is available on the effects of administration of BENYLIN Chesty Coughs (Non-drowsy) during human pregnancy. BENYLIN Chesty Coughs (Non-drowsy), like most medicines, should not be used during pregnancy unless the potential benefit of treatment to the mother outweighs the possible risks to the developing foetus.

Guaifenesin is excreted in breast milk in small amounts with no effect expected on the infant.

No special comment - unlikely to produce an effect

Side effects resulting from guaifenesin administration are very rare.

Adverse reactions to menthol at the low concentration present in BENYLIN Chesty Coughs (Non-drowsy) are not anticipated.

Symptoms and signs

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

Treatment

Treatment should be symptomatic and supportive.

Guaifenesin 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.

Menthol has mild local anaesthetic and decongestant properties.

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 C_max was approximately 1.4 ug/ml, with t_max occurring approximately 15 minutes after drug administration.

Distribution

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

Metabolism 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.

Menthol is hydroxylated in the liver by microsomal enzymes to p-methane -3,8 diol. This is then conjugated with glucuronide and excreted both in urine and bile as the glucuronide.

Pharmacokinetics in Renal/Hepatic Impairment

There have been no specific studies of BENYLIN Chesty Coughs (Non drowsy), menthol or guaifenesin in hepatic or renal impairment.

Pharmacokinetics in the Elderly

There have been no specific studies in the use of BENYLIN Chesty Coughs (Non-drowsy), menthol or guaifenesin in the elderly.

Carcinogenicity

There is insufficient information available to determine whether guaifenesin or menthol have carcinogenic potential.

Mutagenicity

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

The results of a range of tests suggest that menthol does not have a mutagenic potential.

Teratogenicity

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

The results of a number of studies suggest that the administration of menthol does not produce any statistically significant teratogenic effects in rats, rabbits and mice.

Fertility

There is insufficient information available to determine whether guaifenesin or menthol have the potential to impair fertility.

Sodium benzoate

Sucrose

Liquid glucose

Glycerol

Citric acid monohydrate

Sodium citrate

Saccharin sodium

Ethanol 96%

Caramel T12

Ponceau 4R (E124)

Concentrated raspberry essence double strength

Natural sweetness enhancer

Carbomer

Purified water

None known

3 years

Do not store above 30°C.

125, 150, 200 or 300ml amber glass bottles with a 2 piece or a 3 piece plastic child resistant, tamper evident closure fitted with a polyterephtalate ethylene faced aluminium/expanded polyethylene laminated wad

None applicable.

McNeil Products Limited

Foundation Park

Roxborough Way

Maidenhead

Berkshire

SL6 3UG

United Kingdom

PL 15513/0056

15 December 1997

05 March 2010