What is pseudoephedrine?
Pseudoephedrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated
blood vessels can cause nasal congestion (stuffy nose).
Pseudoephedrine is used to treat nasal and sinus congestion, or congestion of the tubes that
drain fluid from your inner ears, called the eustachian (yoo-STAY-shun) tubes.
Pseudoephedrine may also be used for other purposes not listed in this medication guide.
What should I discuss with my healthcare provider before taking pseudoephedrine?
Do not use a cough or cold medicine if you have used an MAO inhibitor such as
isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam), or
tranylcypromine (Parnate) within the past 14 days. Serious, life-threatening side effects can occur if
you take cough or cold medicine before the MAO inhibitor has cleared from your body.
Do not use this medication if you are allergic to pseudoephedrine or to other decongestants,
diet pills, stimulants, or ADHD medications.
Before taking pseudoephedrine, tell your doctor if you are allergic to any drugs, or if you have:
If you have any of these conditions, you may need a dose adjustment or
special tests to safely take pseudoephedrine.
FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your
doctor if you are pregnant or plan to become pregnant during treatment.
Pseudoephedrine can pass into breast milk and may harm a nursing baby. Do not use this
medication without telling your doctor if you are breast-feeding a baby.
Artificially-sweetened liquid forms of cold medicine may contain phenylalanine. This would be
important to know if you have phenylketonuria (PKU). Check the ingredients and warnings on the
medication label if you are concerned about phenylalanine.
How should I take pseudoephedrine?
Use this medication exactly as directed on the label, or as it has been prescribed by your
doctor. Do not use the medication in larger amounts, or use it for longer than recommended. Cold
medicine is usually taken only for a short time until your symptoms clear up.
Always ask a doctor before giving a cough or cold medicine to a child.
Death can occur from the misuse of cough and cold medicines in very young children.
Take this medicine with a full glass of water.
Do not crush, chew, or break an extended-release tablet. Swallow the pill whole. It is
specially made to release medicine slowly in the body. Breaking or opening the pill would cause too
much of the drug to be released at one time.
Measure the liquid form of this medicine with a special dose-measuring spoon or cup, not a
regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.
Talk with your doctor if your symptoms do not improve after 7 days of treatment, or if you
have a fever with a headache, cough, or skin rash.
If you need to have any type of surgery, tell the surgeon ahead of time if you have taken a cold
medicine within the past few days.
Store the medication at room temperature away from moisture and heat.
What happens if I miss a dose of pseudoephedrine?
Since cold medicine is usually taken only as needed, you may not be on a dosing schedule. If
you are taking the medication regularly, take the missed dose as soon as you remember. If it is almost
time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled
time.
Do not
take extra medicine to make up the missed dose.
Where can I get more information about pseudoephedrine?
Your pharmacist has information about pseudoephedrine written for health professionals that you may read.
What are the possible side effects of pseudoephedrine?
Get emergency medical help if you have any of these
signs of an allergic
reaction:
hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using this medication and call your doctor at once if you have any of these serious side
effects:
-
fast, pounding, or uneven heartbeat;
-
severe dizziness, anxiety, restless feeling, or nervousness;
-
easy bruising or bleeding, unusual weakness, fever, chills,
body aches, flu symptoms; or
-
increased blood pressure (severe headache, blurred vision,
trouble concentrating, chest pain, numbness, seizure).
Less serious side effects may include:
-
mild loss of appetite;
-
warmth, tingling, or redness under your skin;
-
feeling excited or restless;
-
sleep problems (insomnia); or
-
skin rash or itching.
This is not a complete list of side effects and others may occur. Call your
doctor for medical advice about side effects. You may report side effects to FDA at
1-800-FDA-1088. You may report side effects to FDA at 1-800-FDA-1088.
What is the most important information I should know about pseudoephedrine?
Always ask a doctor before giving a cough or cold medicine to a child.
Death can occur from the misuse of cough and cold medicines in very young children.
Do not use any other over-the-counter cough or cold medication without first asking your
doctor or pharmacist. If you take certain products together you may accidentally take too much of a
certain drug. Read the label of any other medicine you are using to see if it contains pseudoephedrine.
Do not use a cough or cold medicine if you have used an MAO inhibitor such as
isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam), or
tranylcypromine (Parnate) within the past 14 days. Serious, life-threatening side effects can occur if
you take cough or cold medicine before the MAO inhibitor has cleared from your body.
What should I avoid while taking pseudoephedrine?
Avoid taking diet pills, caffeine pills, or other stimulants (such as ADHD medications) without
your doctor's advice. Taking a stimulant together with a decongestant can increase your risk of
unpleasant side effects.
Do not use any other over-the-counter cough or cold medication without first asking your
doctor or pharmacist. Pseudoephedrine is contained in many over-the-counter medications. If you
take certain products together you may accidentally take too much of a certain drug. Read the label of
any other medicine you are using to see if it contains pseudoephedrine.
What other drugs will affect pseudoephedrine?
Before taking this medication, tell your doctor if you are using any of the following drugs:
-
medicines to treat high blood pressure;
-
a beta-blocker such as atenolol (Tenormin), carteolol
(Cartrol), metoprolol (Lopressor, Toprol), nadolol (Corgard), propranolol (Inderal), sotalol
(Betapace), timolol (Blocadren), and others; or
-
antidepressants such as amitriptyline (Elavil), clomipramine
(Anafranil), imipramine (Janimine, Tofranil), and others.
This list is not complete and there may be other drugs that can interact with
pseudoephedrine. Tell your doctor about all the prescription and over-the-counter medications you use.
This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start
using a new medication without telling your doctor.
What happens if I have an overdose of pseudoephedrine?