Generic Medicine Info
Indications and Dosage
Chronic idiopathic constipation
Adult: 24 mcg bid.

Opioid-induced constipation
Adult: In patients with chronic non-cancer pain (including patients with chronic pain related to prior cancer or its treatment who do not require frequent opioid dosage escalation): 24 mcg bid.

Constipation-predominant irritable bowel syndrome
Adult: In women ≥18 years: 8 mcg bid.
Hepatic Impairment
Chronic idiopathic constipation; Opioid-induced constipation:
Moderate (Child-Pugh class B): Initially, 16 mcg bid; may adjust to 24 mcg bid if tolerated and acceptable clinical response has not been achieved after an appropriate interval at a lower dose. Severe (Child-Pugh class C): Initially, 8 mcg bid; may increase to 16-24 mcg bid if tolerated and acceptable clinical response has not been achieved after an appropriate interval at a lower dose.

Constipation-predominant irritable bowel syndrome:
Severe (Child-Pugh class C): Initially, 8 mcg once daily; may adjust to 8 mcg bid if tolerated and acceptable clinical response has not been achieved after an appropriate interval at a lower dose.
Should be taken with food.
Known or suspected mechanical gastrointestinal obstruction, severe diarrhoea.
Special Precautions
Moderate to severe hepatic impairment (Child-Pugh class B or C). Pregnancy and lactation. Not established for use in the treatment of opioid-induced constipation in patients taking diphenylheptane opioids (e.g. methadone).
Adverse Reactions
Significant: Nausea, syncope or hypotension, dyspnoea.
Cardiac disorders: Chest discomfort or pain, palpitations, tachycardia.
Gastrointestinal disorders: Abdominal pain or distention, diarrhoea, dry mouth, flatulence, dyspepsia, vomiting, constipation, dysgeusia, eructation, faecal incontinence, bowel urgency, gastritis, GERD, rectal haemorrhage.
General disorders and administration site conditions: Oedema, peripheral oedema, fatigue, lethargy, malaise.
Immune system disorders: Hypersensitivity (e.g. rash, swelling and throat tightness).
Investigations: Decreased serum K, increased ALT/AST, weight gain.
Metabolism and nutrition disorders: Anorexia.
Musculoskeletal and connective tissue disorders: Fibromyalgia, joint swelling, muscle cramps or spasms, myalgia.
Nervous system disorders: Dizziness, headache, tremors.
Psychiatric disorders: Anxiety, depression.
Renal and urinary disorders: Pollakiuria, UTI.
Respiratory, thoracic and mediastinal disorders: Cough, pharyngolaryngeal pain, influenza.
Skin and subcutaneous tissue disorders: Erythema, hyperhidrosis.
Vascular disorders: Ischaemic colitis.
Monitoring Parameters
Obtain LFT and evaluate for symptoms of mechanical gastrointestinal obstruction prior to initiation of therapy. Monitor blood pressure regularly. Assess for symptoms of hypotension.
Drug Interactions
Decreased effect when concomitantly administered with diphenylheptane opioids (e.g methadone, levomethadone).
Description: Lubiprostone is a selective, locally-acting chloride-channel activator acting on the apical (luminal) part of gastrointestinal epithelium that increases the secretion of chloride-containing intestinal fluid without changing the serum concentration of Na and K. This increases intestinal motility, thus aiding the passage of stool and bypassing the opiate’s antisecretory action which is the product of secretomotor neuron excitability suppression.
Absorption: Absorption of the parent drug is below the quantitation level (10 pg/mL); M3 (active metabolite): Low. Bioavailability: Low. Time to peak plasma concentration: Approx 1.1 hours (M3).
Distribution: Minimal distribution beyond the gastrointestinal tissue. Plasma protein binding: Approx 94%.
Metabolism: Rapidly and extensively metabolised, possibly within the stomach and jejunum, via reduction and oxidation by carbonyl reductase into active M3 metabolite and other metabolites.
Excretion: Mainly via urine (approx 60%); faeces (approx 30%). Elimination half-life: Approx 0.9-1.4 hours (M3).
Chemical Structure

Chemical Structure Image

Source: National Center for Biotechnology Information (2020). PubChem Compound Summary for CID 157920, Lubiprostone. Retrieved September 24, 2020 from

Store at 25°C. Protect from light and extreme temperatures.
MIMS Class
Other Gastrointestinal Drugs
ATC Classification
A06AX03 - lubiprostone ; Belongs to the class of other laxatives.
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Amitiza Capsules (Sucampo Pharmaceuticals, Inc.). U.S. FDA. Accessed 07/09/2920.

Anon. Lubiprostone. AHFS Clinical Drug Information [online]. Bethesda, MD. American Society of Health-System Pharmacists, Inc. Accessed 07/09/2020.

Anon. Lubiprostone. Lexicomp Online. Hudson, Ohio. Wolters Kluwer Clinical Drug Information, Inc. Accessed 07/09/2020.

Buckingham R (ed). Lubiprostone. Martindale: The Complete Drug Reference [online]. London. Pharmaceutical Press. Accessed 07/09/2020.

Lubiprostone. Gold Standard Drug Database in ClinicalKey [online]. Elsevier Inc. Accessed 07/09/2020.

Disclaimer: This information is independently developed by MIMS based on Lubiprostone 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 © 2022 MIMS. All rights reserved. Powered by
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