dextromethorphan-guaifenesin (generic name)

G-Bid DM (brand name)

It is used for the temporary relief of coughs
(dex troe meth OR fan; gwye FEN e sin)
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What is this medicine?

DEXTROMETHORPHAN; GUAIFENESIN (dex troe meth OR fan; gwye FEN e sin) is a combination of a cough suppressant and expectorant. It is used for the temporary relief of coughs. This medicine is also used to loosen mucus.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • kidney disease
  • liver disease
  • lung disease like asthma, bronchitis, or emphysema
  • taken an MAOI like Carbex, Eldepryl, Marplan, Nardil, or Parnate in last 14 days
  • unable to sit up
  • an unusual or allergic reaction to dextromethorphan, guaifenesin, other medicines, foods, dyes, bromides, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

Take this medicine by mouth with a full glass of water. Follow the directions on the prescription label. Use a specially marked spoon or dropper to measure each dose. Ask your pharmacist if you do not have one. Household spoons are not accurate. Take your medicine at regular intervals. Do not take your medicine more often than directed.

Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 2 years for selected conditions, precautions do apply.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

Do not take this medicine with any of the following medications:
  • MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
  • procarbazine

This medicine may also interact with the following medications:

  • other medicines for colds or allergy
  • medicines for depression or other mental disturbances

What should I watch for while using this medicine?

Do not treat yourself for a cough for more than 1 week without consulting your doctor or health care professional. If you have a high fever, skin rash, lasting headache, or sore throat, see your doctor.

Drink water daily while you are taking this medicine to help loosen mucus.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:
  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • breathing problems
  • confusion
  • excitement, nervousness, restlessness, or irritability

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • headache
  • stomach upset

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Keep bottle tightly closed. Throw away any unused medicine after the expiration date.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Last Updated: April 17, 2009
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