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Chest Congestion Relief


Compare Rugby Chest Congestion Relief Syrups – Guaifenesin & DM Formulas

Relieve mucus, coughing, and chest tightness with affordable Rugby brand expectorants and chest congestion relief syrups. Choose from:

  • Guaifenesin 100mg/5mL expectorant syrup – DM-free
  • Guaifenesin + Dextromethorphan combo formulas

Need a non-drowsy option or DM-free product? We've got both. Shop our multi-packs and compare to Mucinex DM, CVS Chest Congestion Relief, and more—without overpaying.


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Frequently Asked Questions

  • What’s the difference between guaifenesin and guaifenesin DM?
    Guaifenesin is an expectorant that helps loosen mucus. Guaifenesin DM includes dextromethorphan (a cough suppressant). If you just need to clear chest congestion without suppressing cough, choose guaifenesin-only.
  • Do you have a non-drowsy option?
    Yes! Oncor Liquid Guaifenesin 100mg/5mL is non-drowsy and free from dextromethorphan and antihistamines.
  • Which product is best for high blood pressure?
    Customers who need to avoid decongestants often choose Oncor Guaifenesin or Major HBP Cough & Cold (see blog for more info).
  • Are your chest congestion products sugar-free?
    Yes. Oncor guaifenesin syrup is sugar-free, alcohol-free, and dye-free—ideal for sensitive individuals or those with dietary restrictions.
  • Is guaifenesin safe for daily use?
    Guaifenesin is generally safe when used as directed. Always follow dosing instructions on the label or consult a healthcare provider, especially for long-term use.