Entex Description
Guaifenesin is an expectorant. Entex LA is used to break up
congestion and mucous to help you breathe easier. Guaifenesin
thins mucous, increases the lubrication of your respiratory
tract (lungs, nose and throat), and increases the removal of
mucous.
Pseudoephedrine is a decongestant. Entex LA constricts (shrinks)
blood vessels (veins and arteries), which reduces the swelling
of mucous membranes in areas such your nose and sinuses. Guaifenesin
and pseudoephedrine helps to open airways and decrease the
amount of fluid in your respiratory tract to make it easier
for you to breathe.
Entex LA is used to treat the symptoms of the common cold
and of infections of your sinuses, your lungs, and your throat.
Entex LA may also be used for purposes other than those listed
in this medication guide.
Who should not take Entex LA?
Do not take Entex LA if you have taken a monoamine oxidase
inhibitor (MAOI) such as isocarboxazid (Marplan), phenelzine
(Nardil), or tranylcypromine (Parnate) in the last 14 days.
A very serious drug interaction could occur, leading to serious
side effects.
Before taking Entex LA, tell your doctor if you have
high blood pressure or any other type of heart disease,
diabetes,
a peripheral vascular disorder (poor circulation to your hands
and feet),
glaucoma or high pressure in the eye,
an overactive thyroid, or
difficulty urinating or an enlarged prostate.
You may not be able to take guaifenesin and pseudoephedrine,
or you may require a lower dose or special monitoring during
treatment if you have any of the conditions listed above.
Entex LA is in the FDA pregnancy category C. This means
that it is not known whether guaifenesin and pseudoephedrine
will harm an unborn baby. Do not take guaifenesin and pseudoephedrine
without first talking to your doctor if you are pregnant.
Entex LA passes into breast milk and may harm a nursing baby.
Do not take Entex LAwithout first talking to your doctor if
you are breast-feeding a baby.
If you are over 60 years of age, you may be more likely to
experience side effects from Entex LA. You may require a lower
dose of Entex LA.
Entex LA has not been approved for use in children younger
than 6 years of age.
How should I take Entex LA?
Take guaifenesin and pseudoephedrine exactly as directed by
your doctor. If you do not understand these directions, ask
your pharmacist, nurse, or doctor to explain them to you.
Take each Entex LA dose with a full glass of water. Increase
your fluid intake during the day to help relieve your congestion.
Take guaifenesin and pseudoephedrine with food if it upsets
your stomach.
Do not crush or chew the tablets. Swallow them whole or break
them in half where they are scored to make them easier to
swallow.
Store guaifenesin and pseudoephedrine at room temperature
away from moisture and heat.
What happens if I miss a Entex LA dose?
Take the missed dose as soon as you remember. However, if
it is almost time for your next dose, skip the missed dose
and take only your next regularly scheduled dose. Do not take
a double dose of this medication.
What happens if I overdose?
Seek emergency medical attention.
Symptoms of a Entex LA overdose include vomiting, high blood
pressure (headache, redness of face, blurred vision), an irregular
heartbeat, and numbness of your fingers or toes.
What should I avoid while taking Entex LA?
Use caution when driving, operating machinery, or performing
other hazardous activities. Guaifenesin and pseudoephedrine
may cause dizziness. If you experience dizziness, avoid these
activities.
What are the possible side effects of Entex LA?
No serious side effects from guaifenesin and pseudoephedrine
therapy are expected. Seek emergency medical attention if
you experience an allergic reaction (difficulty breathing;
closing of your throat; swelling of your lips, tongue, or
face; or hives).
Other, less serious side effects may be more likely to occur.
Continue to take Entex LA and talk to your doctor if you experience
dizziness or headache;
nervousness, restlessness, or insomnia;
nausea or stomach upset; or
difficulty urinating.
Side effects other than those listed here may also occur.
Talk to your doctor about any side effect that seems unusual
or that is especially bothersome.
What other drugs will affect Entex LA?
Do not take guaifenesin and pseudoephedrine if you have taken
a monoamine oxidase inhibitor (MAOI) such as isocarboxazid
(Marplan), phenelzine (Nardil), or tranylcypromine (Parnate)
in the last 14 days. A very serious drug interaction could
occur, leading to serious side effects.
Heart medications such as methyldopa (Aldomet), reserpine
(Serpalan, Serpasil), and guanethidine (Ismelin) may have
decreased effects. Talk to your doctor before taking guaifenesin
and pseudoephedrine if you are taking any of these medications.
Do not take any other prescription or over-the-counter medications
for coughs, colds, allergies, or dieting unless your doctor
or pharmacist approves. Many other preparations contain pseudoephedrine
or similar drugs and you may accidently overdose.
Drugs other than those listed here may also interact with
guaifenesin and pseudoephedrine. Talk to your doctor and pharmacist
before taking any prescription or over-the-counter medicines.
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