Drug · FAERS side-effect profile with label screen
Levalbuterol Hydrochloride side effects: what 3,485 FDA adverse event reports show
Drug class
Beta 2 -adrenergic agonist
FDA label, Indications wording
Who reports
3,485 reports · 63% serious · 345 with death outcome · 70% female
openFDA FAERS counts, all years, deduplication not applied
Used for
Levalbuterol Inhalation Solution, USP is indicated for the treatment or prevention of bronchospasm in adults, adolescents, and children 6 years of age and older with reversible obstructive airway disease. Levalbuterol Inhalation Solution, USP is a beta.
FDA label, Indications and Usage
What it is
Levalbuterol Inhalation Solution, USP is a sterile, clear, colorless, preservative-free solution of the hydrochloride salt of levalbuterol, the (R)-enantiomer of the drug substance racemic albuterol. Levalbuterol HCl is a relatively selective beta 2 -adrenergic receptor agonist [see Clinical Pharmacology (12) ].
FDA label, Description section
Boxed warning
None in the current label
How to read this page. FAERS is a spontaneous-reporting system: counts are not incidence rates and a signal is not proof of causation.
Each reaction below is run through an automated screen — is the term in the FDA label (known), in the indications (the disease being treated), an administrative/coding term, or none of these (unlabeled)?
That screen is mechanical text matching, not a causality assessment. The 30 hand-written Bradford Hill assessments are on the causality assessment page. Not medical advice.
Causality screen of the 40 strongest signals
Labeled adverse reaction 4Labeled (related wording) 5Likely indication confounding 3Reporting / coding artifact 1Lab value / disease marker 2Not in label — unassessed 25
What the badges mean
- Labeled adverse reaction The exact term appears in the label's warnings or adverse-reactions sections: a known, expected effect. The FAERS signal confirms the label rather than discovering anything.
- Labeled (related wording) The label describes this effect under different wording (e.g. 'neutropenia' for 'neutrophil count decreased'). Treated as known.
- Likely indication confounding The term appears in the label's indications: reports probably describe the disease being treated (or its progression), not a drug effect. Classic confounding by indication.
- Reporting / coding artifact An administrative, monitoring or exposure term (product issue, off-label use, 'test normal', overdose...). Not a biological reaction; a high PRR here reflects how reports are coded.
- Lab value / disease marker A laboratory result, investigation or disease-activity marker (antibody positive, CRP abnormal, swollen joint count) not described in the label. These usually mirror the monitored disease or testing protocol rather than a drug effect; not screened further.
- Not in label — unassessed Not found in the label text, not an artifact pattern. This is a genuine candidate for a formal causality assessment (Bradford Hill / WHO-UMC); it has NOT had one here.
Strongest disproportionality signals
Flagged terms (PRR ≥ 2, χ² ≥ 4, n ≥ 10), ranked by PRR; infinite PRRs (no comparator reports) excluded. The EBGM column is a second, shrinkage-based estimate (MGPS) with its 5th percentile EB05 and the BCPNN IC025; a pair flagged by PRR alone is marked PRR-only and should be read as fragile. The strata column recomputes the PRR on serious reports only and flags pairs whose reports are unusually skewed by sex or come mostly from consumers rather than clinicians. 195 further terms are in the interactive explorer. Reaction links open the term's cross-drug page.
Show:
| Reaction | Reports | PRR 95% CI · ROR · χ²/p | EBGM EB05 · IC025 | Label screen | Serious-only & strata | Trial cross-check |
|---|---|---|---|---|---|---|
| Impaired quality of life | 52 | 21.8 16.6–28.5ROR 22.1 · χ² 1,008 / p 2e-221 | 21.6 EB05 17.1 · IC025 +3.7 3/3 methods agree | Not in label — unassessed | serious PRR 4.0 · 94% clinician | no trial data cached |
| Seasonal allergy | 42 | 17.9 13.3–24.2ROR 18.1 · χ² 653 / p 3e-144 | 17.7 EB05 13.6 · IC025 +3.4 3/3 methods agree | Not in label — unassessed | serious n=26 · ♀ 90% (drug 70%) · 78% consumer | no trial data cached |
| Blood calcium decreased | 30 | 16.0 11.2–22.9ROR 16.1 · χ² 407 / p 1e-90 | 15.7 EB05 11.4 · IC025 +3.1 3/3 methods agree | Lab value / disease marker | serious PRR 18.3 · ♀ 100% (drug 70%) · 90% clinician | no trial data cached |
| Asthma | 254 | 13.6 12.1–15.4ROR 14.6 · χ² 2,972 / p <1e-300 | 13.6 EB05 12.2 · IC025 +3.5 3/3 methods agree | Labeled adverse reaction exact term | serious PRR 11.5 | no trial data cached |
| Chronic obstructive pulmonary disease | 111 | 12.8 10.7–15.4ROR 13.2 · χ² 1,198 / p 9e-263 | 12.7 EB05 10.8 · IC025 +3.3 3/3 methods agree | Likely indication confounding shares a disease stem with the indications wording | serious PRR 12.3 | no trial data cached |
| Infusion site pain | 25 | 11.8 8.0–17.4ROR 11.9 · χ² 236 / p 2e-53 | 11.1 EB05 7.6 · IC025 +2.6 3/3 methods agree | Labeled (related wording) related wording | serious n=12 | no trial data cached |
| Orthostatic hypotension (dizziness on standing) | 34 | 11.7 8.4–16.4ROR 11.8 · χ² 323 / p 2e-72 | 11.2 EB05 8.2 · IC025 +2.8 3/3 methods agree | Not in label — unassessed | serious PRR 11.8 · ♀ 100% (drug 70%) | no trial data cached |
| Respiratory tract infection | 47 | 10.9 8.2–14.5ROR 11.0 · χ² 412 / p 6e-92 | 10.5 EB05 8.1 · IC025 +2.8 3/3 methods agree | Labeled (related wording) related wording | serious PRR 10.4 | no trial data cached |
| Acute respiratory failure | 34 | 10.7 7.6–14.9ROR 10.8 · χ² 289 / p 5e-65 | 10.1 EB05 7.4 · IC025 +2.7 3/3 methods agree | Not in label — unassessed | serious PRR 9.8 | no trial data cached |
| Vitamin d deficiency | 17 | 10.5 6.5–16.9ROR 10.5 · χ² 137 / p 8e-32 | 9.3 EB05 5.8 · IC025 +2.2 3/3 methods agree | Not in label — unassessed | serious PRR 11.6 | no trial data cached |
| Productive cough (cough with phlegm) | 71 | 9.0 7.2–11.4ROR 9.2 · χ² 499 / p 8e-111 | 8.7 EB05 7.1 · IC025 +2.7 3/3 methods agree | Not in label — unassessed | serious PRR 8.8 | no trial data cached |
| Sputum discoloured | 14 | 8.9 5.3–15.0ROR 8.9 · χ² 90 / p 9e-22 | 7.5 EB05 4.5 · IC025 +1.9 3/3 methods agree | Not in label — unassessed | serious PRR 8.4 | no trial data cached |
| Candida infection (yeast infection) | 23 | 8.3 5.5–12.5ROR 8.3 · χ² 140 / p 1e-32 | 7.4 EB05 5.1 · IC025 +2.1 3/3 methods agree | Not in label — unassessed | serious PRR 9.0 | no trial data cached |
| Secretion discharge | 17 | 8.3 5.1–13.3ROR 8.3 · χ² 102 / p 4e-24 | 7.1 EB05 4.6 · IC025 +2.0 3/3 methods agree | Not in label — unassessed | serious PRR 8.8 | no trial data cached |
| Atelectasis | 12 | 7.4 4.2–13.1ROR 7.5 · χ² 61 / p 4e-15 | 6.0 EB05 3.6 · IC025 +1.6 3/3 methods agree | Not in label — unassessed | serious PRR 6.9 | no trial data cached |
| Oxygen saturation decreased | 69 | 7.4 5.9–9.4ROR 7.6 · χ² 379 / p 1e-84 | 7.1 EB05 5.8 · IC025 +2.4 3/3 methods agree | Lab value / disease marker | serious PRR 6.4 | no trial data cached |
| Sedation | 32 | 7.4 5.2–10.4ROR 7.4 · χ² 170 / p 3e-39 | 6.8 EB05 5.0 · IC025 +2.2 3/3 methods agree | Not in label — unassessed | serious PRR 9.0 · ♀ 100% (drug 70%) | no trial data cached |
| Ear infection | 32 | 7.3 5.1–10.2ROR 7.3 · χ² 166 / p 2e-38 | 6.7 EB05 4.9 · IC025 +2.1 3/3 methods agree | Labeled (related wording) related wording | serious PRR 10.2 | no trial data cached |
| Laryngitis | 13 | 7.2 4.2–12.4ROR 7.2 · χ² 63 / p 9e-16 | 5.9 EB05 3.6 · IC025 +1.6 3/3 methods agree | Not in label — unassessed | serious n=8 | no trial data cached |
| Bronchitis | 89 | 7.2 5.9–8.8ROR 7.4 · χ² 470 / p 2e-104 | 7.0 EB05 5.8 · IC025 +2.4 3/3 methods agree | Likely indication confounding shares a disease stem with the indications wording | serious PRR 7.8 | no trial data cached |
| Flank pain | 11 | 7.1 3.9–12.8ROR 7.1 · χ² 51 / p 4e-13 | 5.7 EB05 3.3 · IC025 +1.5 3/3 methods agree | Not in label — unassessed | serious PRR 8.5 | no trial data cached |
| Upper respiratory tract infection (cold/sinus infection) | 54 | 7.0 5.4–9.2ROR 7.1 · χ² 274 / p 8e-62 | 6.7 EB05 5.3 · IC025 +2.3 3/3 methods agree | Labeled (related wording) related wording | serious PRR 7.5 | no trial data cached |
| Insurance issue | 17 | 6.9 4.3–11.1ROR 6.9 · χ² 80 / p 2e-19 | 5.9 EB05 3.9 · IC025 +1.7 3/3 methods agree | Not in label — unassessed | serious PRR 11.5 | no trial data cached |
| Respiratory tract congestion | 18 | 6.8 4.3–10.8ROR 6.8 · χ² 83 / p 3e-20 | 5.9 EB05 3.9 · IC025 +1.8 3/3 methods agree | Not in label — unassessed | serious PRR 9.6 | no trial data cached |
| Sinusitis | 114 | 6.7 5.6–8.0ROR 6.9 · χ² 546 / p 5e-121 | 6.5 EB05 5.6 · IC025 +2.4 3/3 methods agree | Labeled adverse reaction exact term | serious PRR 8.6 | no trial data cached |
| Sinus congestion | 15 | 6.7 4.0–11.0ROR 6.7 · χ² 67 / p 2e-16 | 5.7 EB05 3.6 · IC025 +1.6 3/3 methods agree | Not in label — unassessed | serious n=11 | no trial data cached |
| Loss of personal independence in daily activities | 52 | 6.6 5.0–8.6ROR 6.7 · χ² 241 / p 1e-54 | 6.2 EB05 4.9 · IC025 +2.2 3/3 methods agree | Not in label — unassessed | serious PRR 6.3 · ♀ 35% (drug 70%) | no trial data cached |
| Emphysema | 11 | 6.5 3.6–11.8ROR 6.6 · χ² 46 / p 5e-12 | 5.3 EB05 3.1 · IC025 +1.4 3/3 methods agree | Not in label — unassessed | serious PRR 5.5 | no trial data cached |
| Oral candidiasis (oral thrush) | 14 | 6.5 3.8–10.9ROR 6.5 · χ² 59 / p 7e-15 | 5.4 EB05 3.4 · IC025 +1.5 3/3 methods agree | Not in label — unassessed | serious PRR 6.5 | no trial data cached |
| Bronchospasm (airway tightening) | 15 | 6.3 3.8–10.4ROR 6.3 · χ² 62 / p 2e-15 | 5.4 EB05 3.4 · IC025 +1.6 3/3 methods agree | Likely indication confounding term in indications; also in warnings | serious PRR 3.4 | no trial data cached |
| Illness | 105 | 6.3 5.2–7.6ROR 6.4 · χ² 463 / p 5e-103 | 6.1 EB05 5.2 · IC025 +2.3 3/3 methods agree | Reporting / coding artifact | serious PRR 8.2 | no trial data cached |
| End stage renal disease | 19 | 6.2 4.0–9.7ROR 6.2 · χ² 78 / p 6e-19 | 5.5 EB05 3.7 · IC025 +1.7 3/3 methods agree | Not in label — unassessed | serious PRR 5.7 | no trial data cached |
| Wheezing | 61 | 6.2 4.8–8.0ROR 6.3 · χ² 261 / p 4e-59 | 5.9 EB05 4.8 · IC025 +2.1 3/3 methods agree | Labeled adverse reaction exact term | serious PRR 5.4 · 72% consumer | no trial data cached |
| Aphonia | 14 | 6.0 3.6–10.2ROR 6.1 · χ² 54 / p 1e-13 | 5.1 EB05 3.2 · IC025 +1.5 3/3 methods agree | Not in label — unassessed | serious PRR 6.6 | no trial data cached |
| Dermatitis contact | 11 | 5.8 3.2–10.5ROR 5.8 · χ² 39 / p 2e-10 | 4.8 EB05 2.9 · IC025 +1.2 3/3 methods agree | Not in label — unassessed | serious n=9 | no trial data cached |
| Pneumonia (lung infection) | 313 | 5.8 5.2–6.5ROR 6.3 · χ² 1,264 / p 4e-277 | 5.8 EB05 5.3 · IC025 +2.3 3/3 methods agree | Labeled (related wording) related wording | serious PRR 5.5 | no trial data cached |
| Viral infection | 32 | 5.8 4.1–8.2ROR 5.8 · χ² 122 / p 1e-28 | 5.4 EB05 4.0 · IC025 +1.8 3/3 methods agree | Labeled adverse reaction exact term | serious PRR 5.6 | no trial data cached |
| Brain fog | 14 | 5.8 3.4–9.7ROR 5.8 · χ² 51 / p 6e-13 | 4.9 EB05 3.1 · IC025 +1.4 3/3 methods agree | Not in label — unassessed | serious PRR 5.1 | no trial data cached |
| Dyspnoea exertional | 36 | 5.8 4.2–8.0ROR 5.8 · χ² 137 / p 5e-32 | 5.4 EB05 4.1 · IC025 +1.9 3/3 methods agree | Not in label — unassessed | serious PRR 5.7 | no trial data cached |
| Pneumothorax | 15 | 5.7 3.4–9.4ROR 5.7 · χ² 53 / p 1e-13 | 4.9 EB05 3.2 · IC025 +1.4 3/3 methods agree | Not in label — unassessed | serious PRR 5.2 | no trial data cached |
Trial evidence (ClinicalTrials.gov)
Trial cross-check not yet run for this drug (ClinicalTrials.gov pull covers the 800 most-reported drugs first).
Most frequently reported reactions
By raw co-report count, regardless of disproportionality. Common terms here are often the illness itself or generic outcomes.
| Reaction | Reports | PRR 95% CI · ROR · χ²/p | EBGM EB05 · IC025 | Label screen | Serious-only & strata | Trial cross-check |
|---|---|---|---|---|---|---|
| Dyspnoea (shortness of breath) | 446 | 4.7 4.3–5.2ROR 5.3 · χ² 1,348 / p 2e-295 | 4.7 EB05 4.4 · IC025 +2.1 3/3 methods agree | Labeled adverse reaction exact term | serious PRR 4.4 | no trial data cached |
| Pneumonia (lung infection) | 313 | 5.8 5.2–6.5ROR 6.3 · χ² 1,264 / p 4e-277 | 5.8 EB05 5.3 · IC025 +2.3 3/3 methods agree | Labeled (related wording) related wording | serious PRR 5.5 | no trial data cached |
| Asthma | 254 | 13.6 12.1–15.4ROR 14.6 · χ² 2,972 / p <1e-300 | 13.6 EB05 12.2 · IC025 +3.5 3/3 methods agree | Labeled adverse reaction exact term | serious PRR 11.5 | no trial data cached |
| Cough | 249 | 5.4 4.7–6.0ROR 5.7 · χ² 888 / p 2e-195 | 5.3 EB05 4.8 · IC025 +2.2 3/3 methods agree | Labeled adverse reaction exact term | serious PRR 5.6 | no trial data cached |
| Product dose omission issue | 147 | 3.1 2.6–3.6ROR 3.2 · χ² 210 / p 6e-48 | 3.1 EB05 2.7 · IC025 +1.4 3/3 methods agree | Reporting / coding artifact | serious PRR 6.3 | no trial data cached |
| Covid-19 | 118 | 4.0 3.4–4.8ROR 4.1 · χ² 266 / p 5e-60 | 4.0 EB05 3.4 · IC025 +1.7 3/3 methods agree | Not in label — unassessed | serious PRR 4.8 | no trial data cached |
| Sinusitis | 114 | 6.7 5.6–8.0ROR 6.9 · χ² 546 / p 5e-121 | 6.5 EB05 5.6 · IC025 +2.4 3/3 methods agree | Labeled adverse reaction exact term | serious PRR 8.6 | no trial data cached |
| Chronic obstructive pulmonary disease | 111 | 12.8 10.7–15.4ROR 13.2 · χ² 1,198 / p 9e-263 | 12.7 EB05 10.8 · IC025 +3.3 3/3 methods agree | Likely indication confounding shares a disease stem with the indications wording | serious PRR 12.3 | no trial data cached |
| Illness | 105 | 6.3 5.2–7.6ROR 6.4 · χ² 463 / p 5e-103 | 6.1 EB05 5.2 · IC025 +2.3 3/3 methods agree | Reporting / coding artifact | serious PRR 8.2 | no trial data cached |
| Hospitalisation | 92 | 3.6 3.0–4.4ROR 3.7 · χ² 174 / p 6e-40 | 3.6 EB05 3.0 · IC025 +1.5 3/3 methods agree | Reporting / coding artifact | serious PRR 3.3 | no trial data cached |
| Bronchitis | 89 | 7.2 5.9–8.8ROR 7.4 · χ² 470 / p 2e-104 | 7.0 EB05 5.8 · IC025 +2.4 3/3 methods agree | Likely indication confounding shares a disease stem with the indications wording | serious PRR 7.8 | no trial data cached |
| Infection | 88 | 3.7 3.0–4.5ROR 3.7 · χ² 169 / p 5e-39 | 3.6 EB05 3.0 · IC025 +1.5 3/3 methods agree | Labeled adverse reaction exact term | serious PRR 3.6 | no trial data cached |
| Nasopharyngitis (common cold) | 75 | 2.4 2.0–3.1ROR 2.5 · χ² 63 / p 1e-15 | 2.4 EB05 2.0 · IC025 +0.9 | Not in label — unassessed | serious PRR 3.1 | no trial data cached |
| Seizure | 72 | 3.8 3.0–4.7ROR 3.8 · χ² 145 / p 1e-33 | 3.7 EB05 3.0 · IC025 +1.5 3/3 methods agree | Not in label — unassessed | serious PRR 3.7 | no trial data cached |
| Heart rate increased | 72 | 4.4 3.5–5.5ROR 4.4 · χ² 185 / p 2e-42 | 4.3 EB05 3.5 · IC025 +1.7 3/3 methods agree | Labeled (related wording) related wording | serious PRR 3.9 | no trial data cached |
Unlabeled candidate signals
These flagged terms were not found in the FDA label text and do not match an artifact pattern. They are the pairs that would merit a structured assessment (temporality, dose-response, biological plausibility, consistency across databases, trial or cohort evidence). The screen has not done that; string-matching misses label wording, and a strong PRR can still be stimulated reporting, co-medication, or the disease itself.
- Impaired quality of life — n=52, PRR 21.8
- Seasonal allergy — n=42, PRR 17.9
- Orthostatic hypotension — n=34, PRR 11.7
- Acute respiratory failure — n=34, PRR 10.7
- Productive cough — n=71, PRR 9.0
- Candida infection — n=23, PRR 8.3
- Sedation — n=32, PRR 7.4
- Loss of personal independence in daily activities — n=52, PRR 6.6
- Dyspnoea exertional — n=36, PRR 5.8
Want to assess one of these properly? The runbook describes the Bradford Hill / trial-evidence workflow used on the assessment page, and handoff_top1000_signals.csv lists the strongest unassessed pairs across all drugs.
Common questions
What are the most reported side effects of Levalbuterol?
In FDA FAERS, the most frequently co-reported reaction terms for Levalbuterol are dyspnoea, pneumonia, asthma, cough, covid-19, sinusitis. These are report counts, not rates: FAERS has no denominator, reporting is voluntary and uneven, and a term can be reported because of the illness being treated rather than the drug.
Does Levalbuterol have an FDA boxed warning?
No. The FDA label retrieved for Levalbuterol has no boxed warning; see the label's Warnings and Precautions for the recognised risks.
Do FAERS signals prove that Levalbuterol causes these side effects?
No. A disproportionality signal (PRR, ROR) means a reaction is reported more often with this drug than with others in the database. That can reflect a real effect, but also the disease being treated, stimulated reporting after news or litigation, co-medications, or how reports are coded. Causality needs temporality, dose-response, biological plausibility, consistency across data sources and, ideally, trial or cohort evidence. This page screens each term against the FDA label and ClinicalTrials.gov results; it does not establish causation.
Sources & methods
- FDA label via openFDA (set ID 5b4fa89e-aa46-4504-a275-246f3b4df1df, effective 20200217; matched on
openfda.generic_name.exact:"LEVALBUTEROL") - Bayesian shrinkage measures computed offline over all 1,317,300 cached pairs: BCPNN information component (IC, with Norén closed-form IC025) and MGPS empirical-Bayes geometric mean (EBGM, EB05) with a two-component gamma prior fitted by maximum marginal likelihood (α₁=0.57, β₁=0.02, α₂=1.42, β₂=0.70, w=0.17); unstratified
- FAERS pair statistics from the OpenPV build of 2026-09-14 (openFDA
count=aggregation, fieldpatient.drug.openfda.generic_name.exact, 235 reaction terms, min 3 co-reports); PRR/ROR with 95% CI, chi-square with Yates correction - Serious-only and stratified counts (serious:1, patient.patientsex, primarysource.qualification) from openFDA count queries; serious-only PRR uses the drug serious report total and the term global serious total (N_serious=11,882,979); strata shown only when n ≥ 20
- Seriousness and sex counts from openFDA
count=serious,patient.patientsex,seriousnessdeath
Page generated 2026-10-08. Label and PubChem text are retrieved automatically and may lag the current label; always check the current prescribing information. OpenPV is a beta research tool of the Open Source Medicine Foundation.