Entex La (Guaifenesin and Phenylephrine) Drug Information: Side Effects and Drug Interactions

Pill Identifier Search

May 27, 2012

Entex La

Sinus Infection »

Sinus infection facts

Sinus infections are caused by infections from a pathogenic microorganism (virus, bacterium, or fungus), which grows within a sinus and causes intermittent blockage of the sinus ostium.
Most people do not transmit sinus infections; most clinicians agree that except for rare instances, sinus infections are not contagious but arise from mainly viruses and bacteria that, by chance, contaminate a person who sinuses support their proliferation because of minor, and rarely, major abnormalities in the person's sinus tissue (for example, swelling, inflammation, abnormal mucus production, and rarely, facial or nasal trauma).
Sinusitis is inflammation of the air cavities within the passages of the nose. Sinusitis can be caused by infection, but also can be caused by allergies and chemical or particulate irritation of the sinuses.
Sinusitis may be classified in several ways such as acute sinus infec...

Read the Sinus Infection article »

« Previous
1
2
3
4
5
6
7
8
9
10
Next »

Entex La

The Common Cold Slideshow Pictures

Natural Cold and Flu Remedies Slideshow Pictures

Take the Cold & Flu Quiz

font size

SIDE EFFECTS

Possible adverse reactions include nervousness, insomnia, restlessness, headache, nausea, or gastric irritation. These reactions seldom, if ever, require discontinuation of therapy. Urinary retention may occur in patients with prostatic hypertrophy.

Side effects may include:
Anxiety, convulsions, depression, difficulty breathing, difficulty urinating (in men with an enlarged prostate), hallucinations, headache, inability to sleep or difficulty sleeping, increased heart beat, irritability, irritated stomach, nausea, nervousness, paleness, palpitations, restlessness, tremor, weakness, vomiting

DRUG INTERACTIONS

Phenyephrine HCl w/guaifenesin long acting tablets should not be used in patients taking monoamine oxidase inhibitors or other sympathomimetics.

Do not take Entex LA (guaifenesin and phenylephrine) if you are taking a medication classified as an MAO inhibitor, including the antidepressants Nardil and Parnate. Avoid other stimulating drugs such as Proventil, Ventolin, and many decongestants. Interactions can also occur with the following:

Bromocriptine (Parlodel)
Mecamylamine (Inversine)
Methyldopa (Aldomet)
Reserpine (Diupres, Hydropres)

Last reviewed on RxList: 12/8/2004
This monograph has been modified to include the generic and brand name in many instances.