CARBETAPENTANE; PHENYLEPHRINE (kar bay ta PEN tane; fen il EF rin) is a combination of an antihistamine and a decongestant. It is used to treat the symptoms of allergy, colds, asthma, and bronchitis. This medicine will not treat an infection.
Take this medicine by mouth. Follow the directions on the prescription label. Shake well before using. Use a specially marked spoon or container to measure your medicine. Household spoons are not accurate. Take your doses at regular times. Do not take more medicine than directed.
Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 2 years old for selected conditions, precautions do apply.
Side effects that you should report to your doctor or health care professional as soon as possible:
allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
fast, irregular heartbeat
feeling faint or lightheaded, falls
high or low blood pressure
pale skin, sweating
trouble passing urine or change in the amount of urine
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
dry mouth, nose, throat
irritable, nervous, restless
stomach upset, nausea
Do not take this medicine with any of the following medications:
ergot alkaloids like dihydroergotamine, ergonovine, ergotamine, methylergonovine
MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
This medicine may also interact with the following medications:
barbiturates, like phenobarbital
medicines for chest pain, heart disease, blood pressure, irregular heart beat
medicines for depression, anxiety, or psychotic disturbances
medicines for sleep
other medicines for cold, cough or allergy
some herbal or nutritional supplements like St. John's Wort
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
Keep out of the reach of children.
Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Protect from light. Throw away any unused medicine after the expiration date.
They need to know if you have any of these conditions:
difficulty passing urine
high blood pressure
taken an MAOI like Carbex, Eldepryl, Marplan, Nardil, or Parnate in last 14 days
an unusual or allergic reaction to carbetapentane, phenylephrine, other medicines, foods, dyes, or preservatives
pregnant or trying to get pregnant
Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.