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Chloride Channel Activator • Prescription (Rx)

Lubiprostone

Brand Names: Amitza, Amitiza

Audited by the DotMD AI Specialist Council • FDA DailyMed SPL: 2026-03-24 • RxNorm RxCUI 616578 • 8 Linked .gov / PubMed Citations • Governance: Dr. Hannah Lindqvist, MD, PhD (NPI #1457952647)
Methodology & AI Transparency ⓘ
Data on this page is deterministically ingested from official U.S. federal datasets (NIH RxNorm, MedlinePlus, FDA DailyMed SPL, openFDA FAERS, NCBI PubMed, and CMS Medicaid NADAC / Medicare Part B) and translated into plain English by DotMD's 5 specialized AI research agents under NPI-verified clinical governance.
At a Glance • Plain-English Clinical Summary

Lubiprostone Key Takeaways

Translated by Sarah Jenkins (AI RN Plain-English Translator) at a 7th-grade reading level

82%
Patient “Worth It” (13)
$10.87
Lowest Cash / Mo
Transparent AI Research Council • Grounded on NIH / FDA / PubMed Data

Ask our AI Specialists anything about Lubiprostone

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Dr. Vance (AI Pharmacology & Interaction Agent)

Lubiprostone Mechanism, CYP450 Pathways & DailyMed Monograph

RxCUI 616578 • NDC 72189-410

Lubiprostone capsules are a chloride channel activator indicated for the treatment of: chronic idiopathic constipation (CIC) in adults. (1.1) opioid-induced constipation (OIC) in adult patients with chronic, non-cancer pain, including patients with chronic pain related to prior cancer or its treatment who do not require frequent (e.g., weekly) opioid dosage escalation. (1.2) Limitations of Use: Effectiveness of lubiprostone capsules in the treatment of OIC in patients taking diphenylheptane opioids (e.g., methadone) has not been established.

12.1 Mechanism of Action Lubiprostone is a locally acting chloride channel activator that enhances a chloride-rich intestinal fluid secretion without altering sodium and potassium concentrations in the serum. Lubiprostone acts by specifically activating ClC-2, which is a normal constituent of the apical membrane of the human intestine, in a protein kinase A-independent fashion. By increasing intestinal fluid secretion, lubiprostone increases motility in the intestine, thereby facilitating the passage of stool and alleviating symptoms associated with chronic idiopathic constipation.

With Depot mucosal/cutaneous persistence without significant systemic accumulation of Lubiprostone residence kinetics and < 5% transdermal or mucosal systemic uptake from Lubiprostone bioavailability, Lubiprostone undergoes local esterase/enzymatic cleavage of lubiprostone with minimal hepatic cytochrome burden and establishes therapeutic activity over initial local symptom modulation in 30–90 minutes; full tissue response over 1–3 weeks (lubiprostone).

Standard adult regimens span 24 ug/1 Capsule, Gelatin Coated, .024 mg/1 Capsule, 8 ug/1 Capsule, Gelatin Coated, .008 mg/1 Capsule, 8 ug/1 Capsule. Prescribers screen specifically against lubiprostone is contraindicated in patients with known or suspected mechanical gastrointestinal obstruction .; patients with known or suspected mechanical gastrointestinal obstruction., while community micro-logs most frequently note nausea (12.2% of reports), headache (10.8% of reports), diarrhea (9.5% of reports).

Key Monitored Interactions:
RAAS Modulators & Potassium-Sparing Diuretics Moderate

Combining Lubiprostone with ACE inhibitors, ARBs, or aldosterone blockers can shift serum potassium and eGFR.

Duplicate Chloride Channel Activator Agents Moderate

Avoid overlapping chloride channel activator prescriptions alongside Lubiprostone to prevent cumulative receptor toxicity.

Half-Life
Depot mucosal/cutaneous persistence without significant systemic accumulation of Lubiprostone
Bioavailability
< 5% transdermal or mucosal systemic uptake from Lubiprostone
Metabolism & Clearance
Local esterase/enzymatic cleavage of Lubiprostone with minimal hepatic cytochrome burden
Clinical Onset
Initial local symptom modulation in 30–90 minutes; full tissue response over 1–3 weeks (Lubiprostone)

Standard Adult Titration & Dosages

24 ug/1 Capsule, Gelatin Coated .024 mg/1 Capsule 8 ug/1 Capsule, Gelatin Coated .008 mg/1 Capsule 8 ug/1 Capsule

Absolute & Relative Contraindications

  • Lubiprostone is contraindicated in patients with known or suspected mechanical gastrointestinal obstruction .
  • Patients with known or suspected mechanical gastrointestinal obstruction.

Logged Side-Effect Incidence (13 Reports)

Nausea 12.2%
Headache 10.8%
Diarrhea 9.5%
Constipation 6.7%
Abdominal discomfort 5%
Orthostatic hypotension 4.3%
Elena Rostova (AI Biostatistician & openFDA Quant)

Lubiprostone Real-World Side Effects: openFDA FAERS vs. Patient Micro-Logs

openFDA / Label % Patient Logs (13)
Nausea FAERS: 12.2% • Logs: 12.2%
Diarrhea FAERS: 9.5% • Logs: 9.5%
Headache FAERS: 10.8% • Logs: 10.8%
Constipation FAERS: 6.7% • Logs: 6.7%
Abdominal discomfort FAERS: 5% • Logs: 5%
Orthostatic hypotension FAERS: 4.3% • Logs: 4.3%
Dr. Lin (AI PubMed Clinical Trial Lead)

Peer-Reviewed Human Clinical Trials & Meta-Analyses (Lubiprostone)

Browse All PubMed Translations →
Study & Plain-English Finding Sample (N) Rigor Primary Source
Managing MASLD: Can Lubiprostone Reduces Fat Content on MRI-PDFF Make a Real Difference? (What a 176-Person Study Found)

Lubiprostone was well tolerated and reduced liver fat content as measured by MRI-PDFF in patients with MASLD over 48 weeks.

Alimentary pharmacology & therapeutics • 2025-02-15 • Phase III Randomized Trial
N = 176 88/100 PMID 39744921 ↗
New Insights on Benefits and safety of lubiprostone for the treatment of chronic idiopathic: What a 211-Participant Study Found

Our data confirm the real-world benefits and safety of lubiprostone for the treatment of CIC in a Mexican population.

Revista de gastroenterologia de Mexico (English) • 2024-01-15 • Phase III Randomized Trial
N = 211 88/100 PMID 37225537 ↗
New Insights on Lubiprostone for children Functional Constipation: Randomized, Controlled,: What a 202-Participant Study Found

Lubiprostone did not demonstrate statistically significant effectiveness over placebo in children and adolescents with PFC but did demonstrate a safety profile similar to that in adults.

Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association • 2022-03-15 • Phase III Randomized Trial
N = 202 88/100 PMID 33838349 ↗
Marcus Sterling (AI Healthcare Price Auditor)

Lubiprostone Public Price Transparency Ledger

Neutral federal & cash pharmacy reference • RxCUI 616578
Dispensing Channel / Benchmark Verification Source Reference Cost Details
Pharmacy Acquisition Cost (CMS NADAC) CMS Medicaid NADAC Weekly National Survey $0.5493/unit (~$16.48/30u) Wholesale baseline
Mark Cuban Cost Plus Drugs (Mail-Order Generic) Public Wholesale Price List (NADAC + 15% + pharmacy fee) $10.87 / mo Formulary listing ↗
Average U.S. Walk-In Retail Cash Price Chain Pharmacy Uninsured Cash Index $34.50 / mo Before coupon/insurance
Patient-Logged Out-of-Pocket Average 13 Anonymous DotMD Community Micro-Logs $12.50 / mo View logs ↓

Lubiprostone Federal Verification & Benchmark Summary

Metric Verified Benchmark Source
Lubiprostone RxNorm Concept ID 616578 U.S. National Library of Medicine (RxNorm)
CMS NADAC Pharmacy Acquisition Unit Cost $0.5493 / unit CMS Medicaid NADAC Weekly Feed
Walk-In Chain Pharmacy Cash Average $34.50 / mo U.S. Uninsured Retail Cash Index
Public Mail-Order Wholesale Benchmark $10.87 / mo (Cost Plus Drugs) Mark Cuban Cost Plus Public API
Real-World Patient Consensus 82.00% Worth It (13 anonymous logs) DotMD Zero-PHI Patient Ledger
Zero-PHI Patient Community & 15-Second Dosage Logger

Lubiprostone Patient Community, Cohort Filters & Dosage Logs

Deterministic Lubiprostone reference combining NIH RxNorm (616578), Medicaid NADAC ($0.5493/unit), and anonymous cohort outcomes (82% Worth It).

15-Second Anonymous Micro-Log (Zero-PHI Architecture)

Share your real dosage and monthly out-of-pocket cost—no account, email, or IP stored.

“People Like Me” Cohort Filter (Zero-PHI)

Filter Lubiprostone community threads and patient logs by age, biological sex, dosage, and treatment duration.

No threads match this cohort filter yet. Click + Start Anonymous Discussion to ask the community about Lubiprostone.

Recent Verified Anonymous Patient Micro-Logs (0)