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Phenylephrine (Systemic) (fen il EF rin)

Adult Medication

Brand Names: U.S.

Little Colds Decongestant [OTC]; Medi-Phenyl [OTC]; Nasal Decongestant PE Max St [OTC]; Nasal Decongestant [OTC]; Non-Pseudo Sinus Decongestant [OTC]; Sudafed PE Childrens [OTC]; Sudafed PE Maximum Strength [OTC]; Sudogest PE [OTC]; Vazculep

What is this drug used for?

All oral products:

  • It is used to treat nose stuffiness.

Shot:

  • It is used to treat low blood pressure.

What do I need to tell my doctor BEFORE I take this drug?

All products:

  • If you have an allergy to phenylephrine or any other part of this drug.
  • If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
  • If you have high blood pressure.

All oral products:

  • If you have taken certain drugs used for low mood (depression) like isocarboxazid, phenelzine, or tranylcypromine or drugs used for Parkinson’s disease like selegiline or rasagiline in the last 14 days. Taking this drug within 14 days of those drugs can cause very bad high blood pressure. Talk with your doctor.
This is not a list of all drugs or health problems that interact with this drug.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this drug with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take this drug?

All products:

  • Tell dentists, surgeons, and other doctors that you use this drug.
  • Avoid driving and doing other tasks or actions that call for you to be alert until you see how this drug affects you.
  • If you have high blood sugar (diabetes), this drug may sometimes raise blood sugar. Talk with your doctor about how to fine tune this.
  • Have your blood pressure and heart rate checked often. Talk with your doctor.
  • Limit your use of caffeine (for example, tea, coffee, cola) and chocolate. Use with this drug may cause nervousness, shakiness, and a fast heartbeat.
  • Talk with your doctor before using OTC products that may raise blood pressure. These include cough or cold drugs, diet pills, stimulants, ibuprofen or like products, and some natural products or aids.
  • Talk with your doctor before you drink wine, beer, or mixed drinks.
  • If you are 65 or older, use this drug with care. You could have more side effects.
  • Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this drug while you are pregnant.
  • Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.

Shot:

  • If you are allergic to sulfites, talk with your doctor. Some products have sulfites.
  • Have your blood work checked often. Talk with your doctor.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

All products:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Chest pain or pressure, a fast heartbeat, or passing out.
  • A heartbeat that does not feel normal.
  • Very bad headache.
  • Very bad dizziness.
  • Very nervous and excitable.
  • Not able to pass urine or change in how much urine is passed.
  • Shakiness.

Shot:

  • Blurred eyesight.
  • Shortness of breath, a big weight gain, swelling in the arms or legs.
  • Slow heartbeat.
  • Numbness or tingling in the hands or feet.
  • This drug may cause tissue damage if the drug leaks from the vein. Tell your nurse if you have any redness, burning, pain, swelling, blisters, skin sores, or leaking of fluid where the drug is going into your body.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

All products:

  • Dizziness.
  • Headache.
  • Nervous and excitable.
  • Not able to sleep.
  • Restlessness.
  • Upset stomach or throwing up.

Shot:

  • Sweating a lot.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to your national health agency.

How is this drug best taken?

Use this drug as ordered by your doctor. Read and follow the dosing on the label closely.

All oral products:

  • Take with or without food. Take with food if it causes an upset stomach.
  • Drink lots of noncaffeine liquids unless told to drink less liquid by your doctor.

Liquid:

  • Measure liquid doses carefully. Use the measuring device that comes with this drug. If there is none, get an oral syringe, a dropper, a spoon, or a cup (only for older children) from your pharmacist.

Shot:

  • It is given as a shot.

What do I do if I miss a dose?

All oral products:

  • If you take this drug on a regular basis, take a missed dose as soon as you think about it.
  • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.
  • Many times this drug is used on an as needed basis. Do not use more often than told by the doctor.

Shot:

  • Call the doctor to find out what to do.

How do I store and/or throw out this drug?

All oral products:

  • Store at room temperature.
  • Protect from light.
  • Store in a dry place. Do not store in a bathroom.

Shot:

  • This drug will be given to you in a hospital or doctor’s office. You will not store it at home.

All products:

  • Keep all drugs out of the reach of children and pets.
  • Check with your pharmacist about how to throw out unused drugs.

General drug facts

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else’s drugs.
  • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
  • Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
  • Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Consumer Information Use and Disclaimer

This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Copyright

Copyright © 2014 Clinical Drug Information, LLC and Lexi-Comp, Inc.