Management of Upper Respiratory Symptoms with Lozenges

Evidence for Efficacy

• Lozenges containing topical anesthetics provide effective temporary symptomatic relief for sore throat pain associated with upper respiratory tract infections, though they represent a choking hazard in young children 1
• The analgesic effect of lozenges is temporary but can provide meaningful relief during the acute phase of symptoms 1

Mechanism of Action

• Topical anesthetics in lozenges provide temporary symptomatic relief through local numbing effects 1
• Menthol lozenges work through cold and menthol-sensitive receptors to provide short-term cough suppression 2, 3

Practical Recommendations

• Lozenges are appropriate for adults and older children with acute pharyngitis or sore throat due to viral upper respiratory tract infections 1
• Lozenges should be considered as part of symptomatic management alongside analgesics like NSAIDs or acetaminophen 1, 4
• Menthol lozenges can be recommended for patients with cough associated with upper respiratory infections 2, 3

Important Caveats

• Lozenges represent a choking hazard for young children and should be avoided in this population 1
• The benefit of lozenges is purely symptomatic—lozenges do not shorten the duration of illness or prevent complications 1
• Patients should be counseled that most upper respiratory symptoms resolve within one week without specific treatment 4

What Does NOT Work

• Evidence for zinc-containing lozenges remains conflicting and inconsistent 5, 6
• The American College of Chest Physicians notes zinc preparations are not recommended for acute cough due to common cold 8

Adjunctive Measures

• NSAIDs or acetaminophen should be the primary analgesic therapy, as they provide more consistent pain relief than lozenges alone 1, 4
• Simple home remedies like honey and lemon mixtures are reasonable first-line approaches 2, 3, 8