What is Mucinex Fast Max Chest Cong MS: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Jun 17, 2021

Mucinex Fast Max Chest Cong MS overview

BRAND NAMES:

  • Allfen, Chest Congestion Relief, Children's Mucus Relief, Diabetic Siltussin DAS-Na, Diabetic Tussin, Equaline 12HR Mucus-ER, Equate Mucus ER, Geri-Tussin, Good Neighbor Pharmacy Children's Mucus Relief, Good Neighbor Pharmacy Mucus ER, Good Neighbor Pharmacy Mucus Relief, Good Neighbor Pharmacy Tab Tussin, Good Neighbor Pharmacy Tussin, Good Neighbor Pharmacy Tussin Chest Congestion, Good Sense Mucus Relief

Generic Names:

  • Guaifenesin

Uses:

  • Thins mucus so you can clear it from your head, throat, and lungs.

Therapeutic Classes:

  • Expectorant

Forms:

  • Capsule, Tablet, Long Acting Capsule, Long Acting Tablet, Liquid

How it’s taken:

  • By mouth

What is Mucinex Fast Max Chest Cong MS used for?

What form(s) does Mucinex Fast Max Chest Cong MS come in

  • Capsule

  • Tablet

  • Long Acting Capsule

  • Long Acting Tablet

  • Liquid

What are common Mucinex Fast Max Chest Cong MS doses?

  • Bottle 180ML of 400MG/20ML

How to take Mucinex Fast Max Chest Cong MS

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Do not break, chew, or crush the tablet or capsule. Swallow it whole with a full glass of water.

What to do if you miss a dose of Mucinex Fast Max Chest Cong MS

  • You must use this medicine on a fixed schedule. Call your doctor or pharmacist if you miss a dose.

  • Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Mucinex Fast Max Chest Cong MS contraindications

  • You should not use this medicine if you have ever had an allergic reaction to guaifenesin. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years old. Using these medicines in very young children might cause serious or possibly life-threatening side effects.

Mucinex Fast Max Chest Cong MS warnings

  • This medicine may contain alcohol.

  • If you are pregnant or breast feeding, ask your doctor or pharmacist before using this medicine.

  • If your cough is caused by asthma, emphysema, bronchitis, or smoking, talk to your doctor before using this medicine.

Mucinex Fast Max Chest Cong MS interactions

  • If you are pregnant or breast feeding, ask your doctor or pharmacist before using this medicine.

  • If your cough is caused by asthma, emphysema, bronchitis, or smoking, talk to your doctor before using this medicine.

  • This medicine may contain alcohol.

Mucinex Fast Max Chest Cong MS side effects

Serious Side Effects

  • Cough that lasts longer than 7 days.

  • Cough with fever, skin rash, or ongoing headache.

Less Serious Side Effects

  • Nausea, vomiting, diarrhea, stomach pain.

  • Drowsiness.

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