Glycerol when taken orally may cause headache, nausea and vomiting, and less frequently, diarrhoea, thirst, dizziness and mental confusion. Cardiac arrhythmias have been reported. Glycerol may cause severe dehydration in previously dehydrated patients.
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.