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Related Concept Videos

Drugs Used in Upper Respiratory Disorders: Overview01:16

Drugs Used in Upper Respiratory Disorders: Overview

Upper respiratory tract disorders, including viral infections and allergic rhinitis, cause significant discomfort and disrupt daily life. Managing these conditions involves a variety of drugs, such as antihistamines, intranasal steroids, decongestants, antitussives, expectorants, and mucolytics. Specific examples of drugs in each category are provided.
Antihistamines (e.g., Benadryl) block histamines from binding. Histamines are chemicals released during an allergic reaction in the body. As a...
Upper Respiratory Drugs: Decongestants01:27

Upper Respiratory Drugs: Decongestants

Decongestants are a class of medications used primarily to alleviate nasal congestion, a common symptom resulting from allergies, colds, sinusitis, and other upper respiratory tract infections. These drugs work by activating α-adrenergic receptors, constricting small blood vessels in the nasal membranes. This action results in the opening of clogged nasal passages, thereby facilitating sinus drainage and relieving congestion.
Most decongestants are readily available over-the-counter in various...
Upper Respiratory Drugs: Antitussives, Expectorants, and Mucolytics01:23

Upper Respiratory Drugs: Antitussives, Expectorants, and Mucolytics

Respiratory symptoms, such as congestion and cough, commonly accompany respiratory tract conditions. Various medications, such as antitussives, expectorants, and mucolytics, play crucial roles in providing relief.
Antitussives include codeine, dextromethorphan (Robitussin), and benzonatate (Tessalon). Codeine and dextromethorphan exert their effects centrally by suppressing the cough reflex center in the medulla.  Benzonatate operates peripherally within the respiratory tract by anesthetizing...
Adrenergic Agonists: Mixed-Action Agents01:28

Adrenergic Agonists: Mixed-Action Agents

Mixed-action adrenergic agonists, like ephedrine and pseudoephedrine, directly and indirectly affect adrenergic receptors. These agents stimulate adrenoceptors and indirectly release stored neurotransmitters, amplifying the adrenergic response.
Ephedrine and pseudoephedrine lack a catecholamine group, making them less susceptible to degradation by metabolic enzymes. They have increased oral bioavailability and lipophilicity, resulting in a longer duration of action. Their response is reduced by...
Asthma III: Clinical Manifestations01:13

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...
Asthma-III: Symptoms and Complications01:24

Asthma-III: Symptoms and Complications

Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma

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Related Experiment Video

Updated: Jul 1, 2026

Acupoint Catgut Embedding Therapy in Traditional Chinese Medicine for Managing Allergic Rhinitis
03:40

Acupoint Catgut Embedding Therapy in Traditional Chinese Medicine for Managing Allergic Rhinitis

Published on: December 20, 2024

Caffeine Consumption and Rhinologic Symptom Severity.

Duncan G J Green1, Steven X Wang2, Michael S DeBakey2

  • 1Department of Otorhinolaryngology, Ochsner Health, New Orleans, Los Angeles, USA.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|June 30, 2026
PubMed
Summary
This summary is machine-generated.

Caffeine consumption does not appear to affect rhinologic symptoms. This study found no correlation between daily caffeine intake and the severity of nasal symptoms in 226 participants.

Keywords:
addictioncaffeinerhinitisrhinologysinusitis

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Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber
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Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber
08:47

Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

Published on: March 3, 2023

Area of Science:

  • Otolaryngology
  • Clinical Pharmacology

Background:

  • Caffeine is a widely consumed psychoactive substance.
  • A potential link between caffeine intake and rhinologic symptoms has been suggested.
  • The impact of caffeine withdrawal versus potential symptom relief requires investigation.

Purpose of the Study:

  • To investigate the association between caffeine consumption and rhinologic symptom severity.
  • To determine if caffeine withdrawal effects outweigh potential benefits for nasal symptoms.

Main Methods:

  • Prospective study design involving 226 participants with rhinologic complaints.
  • Assessment of rhinologic symptom severity using the Sino-Nasal Outcome Test 22 (SNOT-22).
  • Quantification of daily caffeine consumption via questionnaires.

Main Results:

  • No statistically significant correlation was found between caffeine consumption and total SNOT-22 scores (P > .05).
  • No significant association observed with the rhinologic subscale of the SNOT-22 (P > .05).
  • No difference in symptom severity across low, medium, and high caffeine consumption tertiles (P = .18).

Conclusions:

  • Caffeine consumption does not demonstrate an appreciable effect on overall rhinologic symptom severity.
  • Findings suggest that caffeine intake is unlikely to influence the experience of nasal symptoms.