Generic Name: acetaminophen, dextromethorphan, pseudoephedrine, and pyrilamine (a SEET a MIN oh fen, pir IL a meen, DEX troe meth OR fan, SOO doe e FED rin)Brand Names: Robitussin Night Relief
Acetaminophen is a pain reliever and fever reducer.
Pyrilamine is an antihistamine that reduces the natural chemical histamine in the body. Histamine can produce symptoms such as sneezing, runny nose, and watery eyes.
Dextromethorphan is a cough suppressant. It affects the cough reflex in the brain that triggers coughing.
Pseudoephedrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose).
The combination of acetaminophen, dextromethorphan, pseudoephedrine, and pyrilamine is used to treat runny or stuffy nose, sinus congestion, cough, and pain or fever caused by the common cold or flu.Dextromethorphan will not treat a cough that is caused by smoking.
Acetaminophen, dextromethorphan, pseudoephedrine, and pyrilamine may also be used for other purposes not listed in this medication guide.
Ask a doctor or pharmacist about using acetaminophen, dextromethorphan, pseudoephedrine, and pyrilamine if you have:
alcoholism or cirrhosis of the liver;
heart disease or high blood pressure;
a thyroid disorder.
Artificially-sweetened liquid forms of cough-and-cold medications 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.
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. Cough-and-cold medicines should be taken only for a short time until your symptoms clear up.An overdose of acetaminophen can cause serious harm. The maximum amount of acetaminophen for adults is 1 gram (1000 mg) per dose and 4 grams (4000 mg) per day. Taking more acetaminophen could cause damage to your liver. One teaspoon of the acetaminophen, dextromethorphan, pseudoephedrine, and pyrilamine liquid contains 108 mg of acetaminophen. Know the amount of acetaminophen in the specific product you are taking. Do not give this medicine to a child without a doctor's advice. Death can occur from the misuse of cough or cold medicine in very young children. Always ask your doctor before treating a cough or cold in a child.
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.Drink extra fluids to help loosen the congestion and lubricate your throat while you are taking this medication. 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 used a cold medicine within the past few days.Store the medicine at room temperature, away from heat, light, and moisture.
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.
The first signs of an acetaminophen overdose include loss of appetite, nausea, vomiting, stomach pain, sweating, and confusion or weakness. Later symptoms may include pain in your upper stomach, dark urine, and yellowing of your skin or the whites of your eyes.
Overdose symptoms may also include dry mouth, feeling restless or nervous, dizziness, drowsiness, diarrhea, loss of appetite, warmth or tingly feeling, seizure (convulsions), or coma.
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.
fast, pounding, or uneven heartbeat;
severe dizziness, anxiety, restless feeling, or nervousness;
confusion, hallucinations, unusual thoughts or behavior;
slow, shallow breathing;
easy bruising or bleeding, unusual weakness, fever, chills, body aches, flu symptoms;
increased blood pressure (severe headache, blurred vision, trouble concentrating, chest pain, numbness, seizure); or
nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).
Less serious side effects may include:
mild loss of appetite, upset stomach;
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.
Before taking this medication, tell your doctor if you are using any of the following drugs:
quinidine (Quinaglute, Quinidex);
zidovudine (Retrovir, AZT);
medicines to treat high blood pressure;
gout medication such as probenecid (Benemid);
antidepressant medications such as amitriptyline (Elavil, Etrafon), bupropion (Wellbutrin, Zyban), fluoxetine (Prozac, Sarafem), fluvoxamine (Luvox), imipramine (Janimine, Tofranil), paroxetine (Paxil), sertraline (Zoloft), and others;
a beta-blocker such as atenolol (Tenormin, Tenoretic), carvedilol (Coreg), labetalol (Normodyne, Trandate), metoprolol (Lopressor, Toprol), nadolol (Corgard), propranolol (Inderal, InnoPran), sotalol (Betapace), and others; or
seizure medication such as phenytoin (Dilantin) or phenobarbital (Luminal, Solfoton).
This list is not complete and there may be other drugs that can interact with acetaminophen, dextromethorphan, pseudoephedrine, and pyrilamine. 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.