Isoflurane
Brand Names: Forane, Terrell
Methodology & AI Transparency ⓘ
Isoflurane Key Takeaways
Translated by Sarah Jenkins (AI RN Plain-English Translator) at a 7th-grade reading level
- 1 What it does: Isoflurane, USP liquid for inhalation may be used for induction and maintenance of general anesthesia.
- 2 Real-world patient consensus: Real-world cohort score of 91% across 9 de-identified Isoflurane entries.
- 3 Typical cash cost range: Dispensing cost comparison spans $62.37 mail/discount cash up to $152.81 uninsured retail (federal NADAC $1.3300).
- 4 Top reported side effects / signs: Key post-marketing and trial adverse reactions (Isoflurane): nausea (11.3%), vomiting (4.9%), cough (3.3%).
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Isoflurane Mechanism, CYP450 Pathways & DailyMed Monograph
Isoflurane, USP liquid for inhalation may be used for induction and maintenance of general anesthesia. Adequate data have not been developed to establish its application in obstetrical anesthesia. Isoflurane, USP liquid for inhalation, a general anesthetic, is an inhalation agent indicated for induction and maintenance of general anesthesia. (1)
12. CLINICAL PHARMACOLOGY 12.2 Pharmacodynamics Induction of and recovery from isoflurane anesthesia are rapid. Isoflurane has a mild pungency which limits the rate of induction, although excessive salivation or tracheobronchial secretions do not appear to be stimulated. Pharyngeal and laryngeal reflexes are readily obtunded. The level of anesthesia may be changed rapidly with isoflurane. Isoflurane is a profound respiratory depressant. As anesthetic dose is increased, tidal volume decreases and respiratory rate is unchanged. This depression is partially reversed by surgical stimulation, even at deeper levels of anesthesia.
Clinical clearance of Isoflurane (General Anesthetic) relies on systemic clearance of isoflurane integrates hepatic phase ii conjugation with renal filtration with a Elimination kinetics span 8 to 19 hours per Isoflurane clinical pharmacology half-life; patients absorbing at Consistent 55%–67% gastrointestinal absorption profile for Isoflurane bioavailability typically observe target onset around cmax attained 2–5 hours post-administration of isoflurane.
FDA clinical labeling for Isoflurane restricts administration in contraindications isoflurane, usp liquid for inhalation is contraindicated in patients: in whom general anesthesia is contraindicated.; with known sensitivity to isoflurane, usp liquid for inhalation or to other halogenated agents .; with known or suspected genetic susceptibility to malignant hyperthermia . across 100 mL/100mL Liquid, 250 mL/250mL Liquid, 1 mL/mL Liquid, 1 mL/mL Inhalant, with self-reported patient tracking dominated by nausea (11.3% of reports), headache (8.5% of reports), dizziness (5.8% of reports).
Verify medication reconciliation lists so Isoflurane is not inadvertently duplicated with another general anesthetic.
Shifts in intragastric pH can modestly influence dissolution kinetics of oral Isoflurane dosage forms.
Standard Adult Titration & Dosages
Absolute & Relative Contraindications
- CONTRAINDICATIONS Isoflurane, USP liquid for inhalation is contraindicated in patients: in whom general anesthesia is contraindicated.
- with known sensitivity to isoflurane, USP liquid for inhalation or to other halogenated agents .
- with known or suspected genetic susceptibility to malignant hyperthermia .
Logged Side-Effect Incidence (9 Reports)
Isoflurane Real-World Side Effects: openFDA FAERS vs. Patient Micro-Logs
Peer-Reviewed Human Clinical Trials & Meta-Analyses (Isoflurane)
| Study & Plain-English Finding | Sample (N) | Rigor | Primary Source |
|---|---|---|---|
| New Insights on A Multicenter, Randomized, gold-standard blind, Positive-Controlled,: What a 416-Participant Study Found Emulsified isoflurane exhibited non-inferiority of anesthesia/sedation compared to propofol in patients undergoing anesthesia induction. CNS drugs • 2022-12-15 • Phase III Randomized Trial | N = 416 | 93/100 | PMID 36385453 ↗ |
| Can This Approach Help? Inside the Latest Research on Anesthesia-induced electroencephalogram oscillations and perioperative outcomes In this study anesthesia-induced oscillations were associated with postoperative outcomes; however, these were not independently associated with delirium or discharge disposition after considering preoperative cognitive and... Journal of clinical anesthesia • 2025-03-15 • Phase III Randomized Trial | Multi-cohort | 82/100 | PMID 39921932 ↗ |
Isoflurane Public Price Transparency Ledger
| Dispensing Channel / Benchmark | Verification Source | Reference Cost | Details |
|---|---|---|---|
| Pharmacy Acquisition Cost (CMS NADAC) | CMS Medicaid NADAC Weekly National Survey | $1.3300/unit (~$39.90/30u) | Wholesale baseline |
| Average U.S. Walk-In Retail Cash Price | Chain Pharmacy Uninsured Cash Index | $152.81 / mo | Before coupon/insurance |
| Patient-Logged Out-of-Pocket Average | 9 Anonymous DotMD Community Micro-Logs | $62.37 / mo | View logs ↓ |
| Sesame Direct Cash-Pay Prescriber Network (Licensed Telehealth Cash Program) | State-licensed clinician review • ~1d mail fulfillment | $29.00 consult | Program details |
| Virtual Psychiatric Medication Management (Licensed Telehealth Cash Program) | State-licensed clinician review • ~1d mail fulfillment | $39.00 consult | Program details |
Isoflurane Federal Verification & Benchmark Summary
| Metric | Verified Benchmark | Source |
|---|---|---|
| Isoflurane RxNorm Concept ID | 542347 | U.S. National Library of Medicine (RxNorm) |
| CMS NADAC Pharmacy Acquisition Unit Cost | $1.3300 / unit | CMS Medicaid NADAC Weekly Feed |
| Walk-In Chain Pharmacy Cash Average | $152.81 / mo | U.S. Uninsured Retail Cash Index |
| Public Mail-Order Wholesale Benchmark | $62.37 / mo (Patient Mean) | Public Cash Reference |
| Real-World Patient Consensus | 91.00% Worth It (9 anonymous logs) | DotMD Zero-PHI Patient Ledger |
Isoflurane Patient Community, Cohort Filters & Dosage Logs
Deterministic Isoflurane reference combining NIH RxNorm (542347), Medicaid NADAC ($1.3300/unit), and anonymous cohort outcomes (91% Worth It).
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Filter Isoflurane community threads and patient logs by age, biological sex, dosage, and treatment duration.