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Entex La

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Entex La

Side Effects
Interactions

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

Read the Entex La (guaifenesin and phenylephrine) Side Effects Center for a complete guide to possible side effects

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.

Side Effects
Interactions
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Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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