Source: Medicines & Healthcare Products Regulatory Agency (GB) Revision Year: 2020 Publisher: GlaxoSmithKline Consumer Healthcare (UK) Trading Limited, Brentford, TW8 9GS, U.K.
Hypersensitivity to any of the constituents.
Use in children under 12 years.
Causes of chronic cough should be excluded if symptoms are persistent. Any accompanying symptoms should be actively sought and appropriately investigated/treated. Stop use and ask a healthcare professional if your cough lasts more than 7 days, comes back or is accompanied by a fever, rash, or persistent headache.
Keep out of the sight and reach of children.
Do not exceed recommended dose.
Excipient warnings:
A dose of 10ml of this medicine administered to an adult weighing 70 kg would result in exposure to 3.0 mg/kg of ethanol which may cause a rise in blood alcohol concentration (BAC) of about 0.5 mg/100 ml.
A dose of 10ml of this medicine administered to a child over 12 years of age and weighing 40 kg would result in exposure to 5.4 mg/kg of ethanol which may cause a rise in blood alcohol concentration (BAC) of about 0.9 mg/100 ml.
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.
If pregnant or breastfeeding, consult a healthcare professional before use.
Although adequate and well-controlled studies in pregnant women have not been performed, the Collaborative Perinatal Project monitored 197 mother-child pairs exposed to guaifenesin during the first trimester. An increased occurrence of inguinal hernias was found in the neonates. However, congenital defects were not strongly associated with guaifenesin use during pregnancy in 2 large groups of mother-child pairs.
Guaifenesin is excreted in breast milk in small quantities.
Caution should therefore be exercised by balancing the potential benefit of treatment against any possible risks.
No or negligible influence.
The following side effects may be associated with the use of Guaifenesin:
Gastrointestinal Disorders: Nausea, vomiting
Immune System Disorders: Hypersensitivity 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.
Not applicable.
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