Safety

General information, not medical advice

Your prescriber and the leaflet in your pack know your situation. This page does not.

  • Follow your prescriber and the leaflet
  • Don't start, stop, or change a dose on your own
  • Doses and warnings differ by country and product
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Robitussin Syrup: Uses, Dosage, Side Effects, Precautions and Alternates

· 4 min read

Robitussin Syrup: Uses, Dosage, Side Effects, Precautions and Alternates
Generic nameGuaifenesin
Drug classExpectorant
FormsSyrup, Liquid, Liquid-filled capsules, Lozenges, Tablets
Robitussin Syrup: Uses, Dosage, Side Effects, Precautions and Alternates product

Quick overview

Robitussin Syrup contains guaifenesin, an expectorant used to relieve chest congestion. It helps loosen and thin mucus in the chest and throat, making coughs more productive so mucus can be cleared more easily. It is available in several forms and should be used exactly as directed on the label or by a doctor.

What is Robitussin Syrup

Robitussin is an expectorant medicine used to relieve chest congestion. It helps loosen mucus in the chest and throat so it is easier to cough it out.

Robitussin Syrup uses

  • Reduces chest congestion caused by the common cold, infections, or allergies
  • Loosens mucus in the chest to make coughs more productive
  • Chest congestion
  • Wet/productive cough with mucus
  • Thick phlegm associated with colds or respiratory infections
  • Helps loosen and clear mucus from the airways

Benefits of Robitussin Syrup

  • Helps loosen and thin mucus so it is easier to cough up
  • Can make an unproductive cough become more productive and less frequent
  • Loosens thick mucus and phlegm in the airways
  • Thins mucus, making it easier to cough up
  • Helps relieve chest congestion caused by colds and similar respiratory conditions
  • Makes a productive cough more effective at clearing mucus
  • Helps improve mucus drainage from the airways

How Robitussin Syrup works

Guaifenesin is thought to work by increasing the amount of fluid in the airways and making mucus thinner, which helps the body clear it out through coughing.

Robitussin Syrup dosage

Use exactly as directed on the label or as prescribed by your doctor; do not use more than recommended or for longer than recommended. Take with food if it upsets your stomach. Drink extra fluids while taking this medicine to help loosen congestion and soothe the throat. Measure the liquid with a proper dose-measuring spoon or cup, not a regular kitchen spoon. Do not crush, chew, break, or open a controlled-release, delayed-release, or extended-release tablet or capsule; swallow it whole. Do not give to a child younger than 4 years old; always ask a doctor before giving a cough or cold medicine to a child. If a dose is missed and you take the medicine on a schedule, take it as soon as you remember, but skip it if it is almost time for your next dose.

Age groupDose
Under 6 yearsDo not use
6–11 years5–10 mL every 4 hours
12 years & older10–20 mL every 4 hours
Adults10–20 mL every 4 hours

Available forms and strengths

  • Syrup
  • Liquid
  • Liquid-filled capsules
  • Lozenges
  • Tablets

Side effects of Robitussin Syrup

Common

  • Dizziness or headache
  • Rash
  • Nausea, vomiting, or stomach upset

Serious

  • Signs of an allergic reaction: hives, difficulty breathing, swelling of the face, lips, tongue, or throat

Warnings and precautions

  • Do not use this medicine if you are allergic to guaifenesin.
  • Do not give this medicine to a child younger than 4 years old. Always check with a doctor before giving cough or cold medicine to a child, since misuse in very young children can cause death.
  • Use exactly as directed and do not use in larger amounts or for longer than recommended.
  • It is not known whether Robitussin will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.
  • It is not known whether Robitussin passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breastfeeding.
  • Do not exceed the recommended dose if you have kidney concerns.
  • Drink plenty of fluids to help loosen mucus, unless your doctor has restricted fluids, if you have liver concerns.
  • Consult a doctor if the cough lasts more than 7 days, returns repeatedly, or occurs with fever, rash, or persistent headache.
  • This medication may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

Storage

  • Store at room temperature away from moisture, heat, and direct sunlight.

When to see a doctor

  • Get emergency medical help if you have signs of an allergic reaction, such as hives, difficulty breathing, or swelling of the face, lips, tongue, or throat.
  • If you think you have taken too much of this medicine, seek emergency medical attention right away.

Alternatives

  • Mucinex
  • Tussin DM
  • Tussin
  • Bidex-400
  • Guiatuss
  • Robitussin Plus
  • Robitussin AC

Watch the video

Video: Robitussin Syrup: Uses, Dosage, Side Effects, Precautions and Alternates

FAQs

What is Robitussin Syrup used for?

It is used to relieve chest congestion caused by colds, infections, or allergies by loosening mucus in the chest and throat, making coughs more productive.

How does Robitussin Syrup work?

Its active ingredient, guaifenesin, increases fluid in the airways and thins mucus, helping the body clear it out through coughing.

What is the dosage for Robitussin Syrup?

For ages 6–11, 5–10 mL every 4 hours; for ages 12 and older and adults, 10–20 mL every 4 hours. It should not be used in children under 6 years old.

What are the side effects of Robitussin Syrup?

Common side effects include dizziness, headache, rash, nausea, vomiting, or stomach upset. Serious allergic reactions like hives, difficulty breathing, or swelling can occur.

Can children use Robitussin Syrup?

It should not be given to children younger than 4 years old, and a doctor should be consulted before giving it to any child.

General information, not medical advice

Your prescriber and the leaflet in your pack know your situation. This page does not.

  • Follow your prescriber and the leaflet
  • Don't start, stop, or change a dose on your own
  • Doses and warnings differ by country and product
Facts checked by a personSourcesFull disclaimer

Sources

  1. https://www.drugs.com/robitussin.html
  2. https://www.webmd.com/drugs/otc-brands/robitussin-cough-cold-flu-products
  3. https://assets.hpra.ie/products/Human/22021/b7b7c2c8-6cbf-4f46-b22d-7aa5567e5cb8.pdf