Glycerol


Concise Prescribing Info
Indications/Uses
Listed in Dosage.
Dosage/Direction for Use
Adult : PO Cough For tickly dry cough: As 15% v/v syr: 10 mL 3-4 times/day. Rectal Constipation As supp: 2-3 g once daily as needed. Topical Hydrate and soften skin As 25% or 40% cream: Apply regularly to affected areas.
Dosage Details
Oral
Cough
Adult: For dry tickly cough: As 15% v/v syr: 5-10 mL 3-4 times daily.
Child: As 15% v/v syr: 3 months to <1 year 5 mL 3-4 times daily; 1-5 years Same as adult dose.

Rectal
Constipation
Adult: As supp: 2-3 g once daily as needed.
Child: 2-<6 years 1-1.2 g once daily as needed; ≥6 years 2-2.1 g once daily as needed.

Topical/Cutaneous
Hydrate and soften skin
Adult: As 25% or 40% w/w cream: Apply regularly to affected areas.
Child: Same as adult dose.
Incompatibility
Forms explosive mixture with strong oxidising agent. May result in black discolouration when combined with zinc oxide or bismuth subnitrate.
Special Precautions
Patient with hypervolaemia, cardiac failure, renal disease, dehydration, diabetes mellitus. Treatment with a cough medicine in children (especially under 1 year old) should be considered carefully due to potential risks and limited evidence on efficacy. Pregnancy and lactation.
Adverse Reactions
Cardiac disorders: Cardiac arrhythmia, circulatory overload, heart failure.
Gastrointestinal disorders: Nausea, vomiting, diarrhoea, thirst, abdominal cramp, rectal irritation/discomfort, tenesmus, rectal mucosal erosion.
General disorders and administration site conditions: Application site reaction (e.g. burning sensation, erythema, pain, pruritus, rash, irritation).
Metabolism and nutrition disorders: Hyperglycaemia, dehydration.
Musculoskeletal and connective tissue disorders: Rectal tenesmus.
Nervous system disorders: Dizziness, headache (oral).
Psychiatric disorders: Mental confusion.
Renal and urinary disorders: Glycosuria.
Respiratory, thoracic and mediastinal disorders: Severe pulmonary oedema.
Skin and subcutaneous tissue disorders: Exacerbation of eczema and dry skin.
Overdosage
Symptoms: Headache, thirst, nausea, vomiting, hyperglycaemia, dehydration, diarrhoea, dizziness, mental confusion and cardiac arrhythmia. Management: Symptomatic and supportive treatment. Perform gastric lavage for recent ingestion.
Action
Description: Glycerol is an osmotic dehydrating agent with hygroscopic and lubricating properties which increases plasma osmolality, resulting in the movement of water from extravascular spaces into the plasma through osmosis. It has a demulcent property which possibly blocks sensory cough receptors in the respiratory tract.
Synonym: glycerin.
Pharmacokinetics:
Absorption: Readily absorbed from the gastrointestinal tract (oral). Poorly absorbed (rectal).
Metabolism: Extensively metabolised in the liver into glucose or glycogen or oxidised to carbon dioxide and water.
Excretion: Mainly via urine, as unchanged drug.
Chemical Structure

Chemical Structure Image
Glycerol

Source: National Center for Biotechnology Information. PubChem Database. Glycerol, CID=753, https://pubchem.ncbi.nlm.nih.gov/compound/Glycerol (accessed on Jan. 22, 2020)

Storage
Store below 25°C. Protect rectal suppository from heat.
ATC Classification
A06AG04 - glycerol ; Belongs to the class of enemas. Used in the treatment of constipation.
A06AX01 - glycerol ; Belongs to the class of other laxatives.
References
Anon. Glycerin. Lexicomp Online. Hudson, Ohio. Wolters Kluwer Clinical Drug Information, Inc. https://online.lexi.com. Accessed 29/05/2017.

Anon. Hyperosmotic Laxatives. AHFS Clinical Drug Information [online]. Bethesda, MD. American Society of Health-System Pharmacists, Inc. https://www.ahfscdi.com/. Accessed 29/05/2017.

Buckingham R (ed). Glycerol. Martindale: The Complete Drug Reference [online]. London. Pharmaceutical Press. https://www.medicinescomplete.com. Accessed 29/05/2017.

Joint Formulary Committee. Glycerol (Glycerin). British National Formulary [online]. London. BMJ Group and Pharmaceutical Press. https://www.medicinescomplete.com. Accessed 29/05/2017.

Walgreens Adult Glycerin Laxative (Walgreens). DailyMed. Source: U.S. National Library of Medicine. https://dailymed.nlm.nih.gov/dailymed/. Accessed 29/05/2017.

Walgreens Children Glycerin Laxative (Walgreens). DailyMed. Source: U.S. National Library of Medicine. https://dailymed.nlm.nih.gov/dailymed/. Accessed 29/05/2017.

Disclaimer: This information is independently developed by MIMS based on Glycerol from various references and is provided for your reference only. Therapeutic uses, prescribing information and product availability may vary between countries. Please refer to MIMS Product Monographs for specific and locally approved prescribing information. Although great effort has been made to ensure content accuracy, MIMS shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2020 MIMS. All rights reserved. Powered by MIMS.com
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