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Ipratropium

Prescription ·Strong evidence ·Reviewed May 2026

A short-acting muscarinic antagonist (SAMA/short-acting anticholinergic) used for the maintenance treatment of COPD and as an adjunct to beta-agonists in acute severe asthma and COPD exacerbations. The nebulized form (often combined with albuterol as DuoNeb/Combivent) is a standard component of acute bronchospasm management in emergency departments. The nasal spray formulation (Atrovent Nasal) treats rhinorrhea associated with allergic and nonallergic rhinitis and the common cold.

Evidence tier
Strong
Indexed sources
10 1995–2025
Interactions
0
Category
Prescription
Read the sources → Compare profiles
What it's good for
  • Maintenance bronchodilation in COPD8
  • Adjunct to albuterol in acute severe asthma exacerbations2,3
  • Combined with albuterol (Combivent/DuoNeb) for COPD1,2
  • Treats rhinorrhea (nasal spray formulation)
  • Useful when beta-agonists are contraindicated (cardiac patients)
What to watch for
  • Dry mouth
  • Cough
  • Headache
  • Known hypersensitivity to ipratropium, atropine, or atropine derivatives1,2
  • Known hypersensitivity to soy lecithin or related food products (MDI formulation)

The bottom line

Evidence rating strong. Most-documented uses: maintenance bronchodilation in copd, adjunct to albuterol in acute severe asthma exacerbations, combined with albuterol (combivent/duoneb) for copd. 10 sources indexed (1995–2025), with 0 interaction records on file.

The science

How it works, mechanistically.

Core mechanism

A quaternary ammonium derivative of atropine that competitively blocks muscarinic M1, M2, and M3 receptors in bronchial smooth muscle and submucosal glands. Blockade of parasympathetic vagal tone reduces basal bronchomotor tone and inhibits reflex bronchoconstriction. Also decreases mucus secretion from goblet cells and submucosal glands. Unlike tiotropium, ipratropium has relatively equal affinity for all muscarinic subtypes and shorter receptor binding duration, requiring more frequent dosing.

Class
Short-Acting Muscarinic Antagonist (SAMA)
Dosing

Dosing & protocol.

Common range
MDI: 2 puffs (17 mcg each) QID; nebulizer: 500 mcg every 6-8 hours; nasal spray: 2 sprays (42 mcg) per nostril BID-TID; acute exacerbation: 500 mcg nebulized every 20 min x 3 doses with albuterol (as prescribed by your physician)
Recommended form
Metered-dose inhaler (MDI), nebulizer solution, or nasal spray

Delivered by inhalation or nasal spray. Poorly absorbed systemically (<2% bioavailability) due to quaternary ammonium structure. Local bronchodilator effect with minimal systemic anticholinergic effects.2

Safety

Full safety detail.

Side effects

  • Dry mouth
  • Cough
  • Headache
  • Nausea
  • Dizziness
  • Blurred vision (if sprayed into eyes)
  • Urinary retention (rare)

Contraindications

  • Known hypersensitivity to ipratropium, atropine, or atropine derivatives1,2
  • Known hypersensitivity to soy lecithin or related food products (MDI formulation)
  • Not for primary treatment of acute bronchospasm alone (use with SABA)2,3
  • Narrow-angle glaucoma (protect eyes during nebulizer use)
Sources

Sources, by evidence tier.

Numbered references. Citations throughout the page link here.

Meta-analyses & systematic reviews

5

Randomized controlled trials

1

Reference material

4
Keep exploring

Deep dives & adjacent profiles.

TiotropiumPrescriptionAlbuterolPrescriptionPseudoephedrinePrescriptionOxybutyninPrescriptionOseltamivirPrescriptionMontelukastPrescription

This page is educational. Do not start, stop, or change a supplement or medication based on it without checking with a qualified healthcare professional.

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NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.