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Mucinex

Generic: Guaifenesin

OTC
Expectorant✓ FDA-verified
View full FDA label ↗
Mucinex is a medication that helps loosen mucus and phlegm in your airways, making it easier to cough up and clear out. It works by thinning the mucus, which helps you breathe better when you're dealing with a cough. Adults and children aged 12 and over can take 1 or 2 tablets every 12 hours, but you should not take more than 4 tablets in a 24-hour period. It's important not to use this medication for children under 12 years old. If you are pregnant or breastfeeding, you should consult a healthcare professional before using it.

Uses

  • Loosens phlegm (mucus).
  • Thins bronchial secretions.

Dosage

Adults and children 12 years and over: 1 or 2 tablets every 12 hours.
Do not exceed 4 tablets in 24 hours.
Children under 12 years of age: do not use.
Take with a full glass of water.
This product can be taken without regard for meals.
Always follow your doctor's specific instructions for your dose.

Side effects

Common

Cough lasting more than 7 daysCough returning or occurring with feverCough with rash or persistent headache
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Warnings

⚠ Important warnings

  • Do not use for children under 12 years of age.
  • Ask a doctor before use if you have a chronic cough.
  • Stop use and ask a doctor if cough lasts more than 7 days.
  • If pregnant or breastfeeding, ask a health professional before use.
  • Keep out of reach of children.
  • In case of overdose, get medical help immediately.

Ask about this product

Answers pulled from the FDA label only.

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Medical Disclaimer: This content is provided for informational and educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before taking any medication.
Data Source: Publicly available drug labeling information from the U.S. Food and Drug Administration (FDA).