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Hyflex-650

Generic Name: acetaminophen and phenyltoloxamine (a seet a MIN oh fen and FEN il toe LOX a meen)
Brand Name: Dologesic, Dologesic DF

What is Hyflex-650 (acetaminophen and phenyltoloxamine)?

Acetaminophen is a pain reliever and a fever reducer.

Phenyltoloxamine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.

Acetaminophen and phenyltoloxamine is a combination medicine used to treat fever, headache, menstrual pain, and other minor aches and pains. This medicine also treats itchy or watery eyes, and pain or fever caused by the common cold or seasonal allergies.

Acetaminophen and phenyltoloxamine may also be used for purposes not listed in this medication guide.

What is the most important information I should know about Hyflex-650 (acetaminophen and phenyltoloxamine)?

Do not take more than your recommended dose. An acetaminophen overdose can damage your liver or cause death. Call your doctor at once if you have nausea, pain in your upper stomach, itching, loss of appetite, dark urine, clay-colored stools, or jaundice (yellowing of your skin or eyes).

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In rare cases, acetaminophen may cause a severe skin reaction. Stop taking this medicine and call your doctor right away if you have skin redness or a rash that spreads and causes blistering and peeling.

What should I discuss with my healthcare provider before taking Hyflex-650 (acetaminophen and phenyltoloxamine)?

You should not take this medication if you are allergic to acetaminophen or phenyltoloxamine.

Ask a doctor or pharmacist if it is safe for you to take this medicine if you have other medical conditions, especially:

  • asthma or COPD, emphysema, or other breathing problems;

  • liver disease, alcoholism, or if you drink more than 3 alcoholic beverages per day;

  • enlarged prostate or urination problems;

  • glaucoma; or

  • if you also take warfarin (Coumadin, Jantoven).

Acetaminophen and phenyltoloxamine should not be given to a child younger than 12 years old without medical advice.

It is not known whether this medicine will harm an unborn baby. Do not use this medicine without your doctor's advice if you are pregnant.

This medication may pass into breast milk and may harm a nursing baby. Antihistamines may also slow breast milk production. Do not use this medicine without your doctor's advice if you are breast-feeding a baby.

Artificially sweetened liquid medicine may contain phenylalanine. Check the medication label if you have phenylketonuria (PKU).

How should I take Hyflex-650 (acetaminophen and phenyltoloxamine)?

Do not take more of this medicine than is recommended. An overdose of acetaminophen can damage your liver or cause death.

Use exactly as directed on the label, or as prescribed by your doctor. This 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.

Measure liquid medicine with the dosing syringe provided, or with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.

Do not take for longer than recommended. Stop taking the medicine and call your doctor if:

  • you still have a fever after 3 days of use;

  • you still have pain after 10 days;

  • your symptoms get worse; or

  • you have any redness or swelling.

If you need surgery or medical tests, tell the surgeon or doctor ahead of time if you have taken this medicine within the past few days.

Store at room temperature away from moisture and heat. Do not allow liquid medicine to freeze.

What happens if I miss a dose?

Since this medicine is used when needed, you may not be on a dosing schedule. If you are on a schedule, use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of acetaminophen can be fatal.

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.

What should I avoid while taking Hyflex-650 (acetaminophen and phenyltoloxamine)?

Avoid drinking alcohol. It may increase your risk of liver damage while taking acetaminophen, and can increase certain side effects of phenyltoloxamine.

Ask a doctor or pharmacist before using any other cold, allergy, pain, or sleep medication. Acetaminophen (sometimes abbreviated as APAP) is contained in many combination medicines. Taking certain products together can cause you to get too much acetaminophen which can lead to a fatal overdose. Check the label to see if a medicine contains acetaminophen or APAP.

This medicine may cause blurred vision or impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert and able to see clearly.

Hyflex-650 (acetaminophen and phenyltoloxamine) side effects

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.

In rare cases, acetaminophen may cause a severe skin reaction that can be fatal. This could occur even if you have taken acetaminophen in the past and had no reaction. Stop taking this medicine and call your doctor right away if you have skin redness or a rash that spreads and causes blistering and peeling. If you have this type of reaction, you should never again take any medicine that contains acetaminophen.

Stop using this medication and call your doctor at once if you have:

  • confusion, hallucinations, unusual thoughts or behavior;

  • little or no urinating; or

  • nausea, upper stomach pain, itching, tired feeling, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Common side effects may include:

  • dizziness, drowsiness;

  • feeling restless or excited (especially in children);

  • constipation;

  • blurred vision; or

  • dry mouth, nose, or throat.

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.

See also: Side effects (in more detail)

What other drugs will affect Hyflex-650 (acetaminophen and phenyltoloxamine)?

Ask a doctor or pharmacist before using this medicine if you are also using any other drugs, including prescription and over-the-counter medicines, vitamins, and herbal products. Some medicines can cause unwanted or dangerous effects when used together. Not all possible interactions are listed in this medication guide.

Taking this medicine with other drugs that make you sleepy or slow your breathing can worsen these effects. Ask your doctor before taking acetaminophen and phenyltoloxamine with a sleeping pill, narcotic pain medicine, muscle relaxer, or medicine for anxiety, depression, or seizures.

Where can I get more information?

  • Your pharmacist can provide more information about acetaminophen and phenyltoloxamine.
  • Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
  • Disclaimer: Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

Copyright 1996-2012 Cerner Multum, Inc. Version: 13.03. Revision Date: 2015-04-27, 12:22:12 PM.

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