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Neo-Synephrine 12 Hour

Generic Name: oxymetazoline nasal (ox ee me TAZ oh leen)
Brand Names: Afrin, Afrin Nasal Sinus, Allerest 12 Hour Nasal Spray, Duramist Plus, Duration, Four-Way Nasal Spray, Genasal, Neo-Synephrine 12 Hour, Nostrilla, NRS Nasal, NTZ Long Acting Nasal, Oxyfrin, Oxymeta-12, Sinarest Nasal, Sinex Long-Acting, Twice-A-Day

What is Neo-Synephrine 12 Hour (oxymetazoline nasal)?

Oxymetazoline is a decongestant. It works by constricting (shrinking) blood vessels (veins and arteries) in your body. The nasal formulation acts directly on the blood vessels in your nasal tissues. Constriction of the blood vessels in your nose and sinuses leads to drainage of these areas and a decrease in congestion.

Oxymetazoline nasal is used to treat congestion associated with allergies, hay fever, sinus irritation, and the common cold.

Oxymetazoline nasal may also be used for purposes other than those listed in this medication guide.

What is the most important information I should know about Neo-Synephrine 12 Hour (oxymetazoline nasal)?

Do not use oxymetazoline nasal for longer than 3 to 5 days. Longer use could cause damage to your nasal tissue and lead to chronic congestion. If your symptoms do not improve, see your doctor.

Do not use more of this medication than is recommended on the package or by your doctor.

Who should not use Neo-Synephrine 12 Hour (oxymetazoline nasal)?

Do not use oxymetazoline nasal if you have taken a monoamine oxidase (MAO) inhibitor such as isocarboxazid (Marplan), phenelzine (Nardil), or tranylcypromine (Parnate) in the last 14 days. This could cause a very dangerous drug interaction with serious side effects.

Before taking this medication, tell your doctor if you have

  • high blood pressure;

  • any type of heart disease, hardening of the arteries, or irregular heart beats;

  • thyroid problems;

  • diabetes;

  • glaucoma or increased pressure in the eye;

  • an enlarged prostate or difficulty urinating; or

  • liver or kidney disease.

You may not be able to use oxymetazoline nasal, or you may require a lower dose or special monitoring during your therapy if you have any of the conditions listed above.

It is not known whether oxymetazoline nasal will harm an unborn baby. Do not use oxymetazoline nasal without first talking to your doctor if you are pregnant. Infants are especially sensitive to the effects of oxymetazoline nasal. Do not use this medication without first talking to your doctor if you are breast-feeding a baby. If you over 60 years of age, you may be more likely to experience side effects from oxymetazoline nasal. You may require a lower dose of this medication.

How should I use Neo-Synephrine 12 Hour (oxymetazoline nasal)?

Use oxymetazoline nasal exactly as directed by your doctor, or follow the instructions that accompany the package. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

To apply the nasal spray, keep your head upright, spray, then sniff hard for a few minutes after administering a dose.

To apply the nasal drops, lie on a bed on your back with your head hanging over the edge. Insert the drops and remain in this position for several minutes. Gently turn your head from side to side.

Do not allow the tip of the container to touch the inside of your nose or any other surface. This spreads the infection.

Also, to prevent the spread of infection, do not share this medication with anyone else.

Discard this medication bottle after use. Do not save it for reuse.

Never use this medication in larger doses or more often than is recommended. Too much oxymetazoline nasal could be very harmful. Oxymetazoline nasal should not be used more often than twice a day (every 12 hours).

Do not use oxymetazoline nasal for longer than 3 to 5 days. Longer use could cause damage to your nasal tissue and lead to chronic congestion. If your symptoms do not improve, see your doctor.

Store oxymetazoline nasal at room temperature away from moisture and heat.

What happens if I miss a dose?

Use the missed dose as soon as you remember. However, if it is almost time for your next regularly scheduled dose, skip the missed dose and use the next one as directed. Do not use a double dose of this medication.

What happens if I overdose?

Seek emergency medical attention.

Symptoms of an oxymetazoline nasal overdose include extreme tiredness, sweating, dizziness, a slow heartbeat, and coma.

What should I avoid while taking Neo-Synephrine 12 Hour (oxymetazoline nasal)?

Never use this medication in larger doses or more often than is recommended. Too much oxymetazoline nasal could be very harmful.

Neo-Synephrine 12 Hour (oxymetazoline nasal) side effects

If you experience any of the following serious side effects, stop using oxymetazoline nasal and seek emergency medical attention:

  • an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);

  • seizures;

  • unusual behavior or hallucinations; or

  • an irregular or fast heartbeat.

More commonly, you may experience some sneezing or burning, stinging, dryness, or irritation of the nose. These side effects are usually mild and temporary.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect Neo-Synephrine 12 Hour (oxymetazoline nasal)?

Do not use oxymetazoline nasal if you have taken a monoamine oxidase (MAO) inhibitor such as isocarboxazid (Marplan), phenelzine (Nardil), or tranylcypromine (Parnate) in the last 14 days.

Although drug interactions between topical nasal decongestants and drugs taken by mouth are not expected, they can occur. Rarely, oxymetazoline nasal may interact with the following medicines:

  • furazolidone (Furoxone);

  • guanethidine (Ismelin);

  • indomethacin (Indocin);

  • methyldopa (Aldomet);

  • bromocriptine (Parlodel);

  • caffeine in cola, tea, coffee, chocolate and other products;

  • theophylline (Theo-Dur, Theochron, Theolair, others);

  • tricyclic antidepressants such as amitriptyline (Elavil, Endep), doxepin (Sinequan), and nortriptyline (Pamelor);
  • other commonly used tricyclic antidepressants, including amoxapine (Asendin), clomipramine (Anafranil), desipramine (Norpramin), imipramine (Tofranil), protriptyline (Vivactil), and trimipramine (Surmontil);
  • phenothiazines such as chlorpromazine (Thorazine), thioridazine (Mellaril), and prochlorperazine (Compazine); and
  • other commonly used phenothiazines, including fluphenazine (Prolixin), perphenazine (Trilafon), mesoridazine (Serentil), and trifluoperazine (Stelazine).

Drugs other than those listed here may also interact with oxymetazoline nasal. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.

More Neo-Synephrine 12 Hour resources

  • Neo-Synephrine 12 Hour Side Effects (in more detail)
  • Neo-Synephrine 12 Hour Use in Pregnancy & Breastfeeding
  • Neo-Synephrine 12 Hour Drug Interactions
  • Neo-Synephrine 12 Hour Support Group
  • 0 Reviews for Neo-Synephrine2 Hour - Add your own review/rating
  • Neo-Synephrine 12 Hour Advanced Consumer (Micromedex) - Includes Dosage Information
  • Afrin Solution MedFacts Consumer Leaflet (Wolters Kluwer)

Compare Neo-Synephrine 12 Hour with other medications

  • Nasal Congestion

Where can I get more information?

  • Your pharmacist has additional information about oxymetazoline nasal written for health professionals that you may read.

See also: Neo-Synephrine2 Hour side effects (in more detail)





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