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Brovex PEB (Generic Phenylephrine)

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Why is this medication prescribed?

Phenylephrine is commonly prescribed for various conditions related to nasal congestion, sinusitis, and allergic rhinitis. It’s a decongestant that works by narrowing the blood vessels in the nasal passages, thereby reducing swelling and congestion.

How should this medicine be used?

Here’s how phenylephrine is typically used:

  • Dosage: The dosage can vary depending on the specific formulation and the severity of the condition. Always follow your doctor’s instructions or the directions on the medication label.
  • Administration: Phenylephrine is usually taken orally in the form of tablets or liquid. It’s important to swallow the tablets whole and not crush or chew them unless directed otherwise.
  • Frequency: The frequency of dosage also depends on the formulation and the severity of symptoms. Typically, it’s taken every 4 to 6 hours as needed. However, it’s essential not to exceed the recommended dosage or frequency, as it can lead to adverse effects.
  • Duration: Phenylephrine is usually used for short-term relief of symptoms. If symptoms persist or worsen, it’s important to consult a healthcare professional for further evaluation.
  • Special Instructions: If you’re using phenylephrine nasal spray, follow the specific instructions provided with the product. It’s essential to avoid using it for more than three consecutive days, as prolonged use can lead to rebound congestion.
  • Consultation: Always consult your doctor or pharmacist if you have any questions or concerns about how to use phenylephrine or if you experience any adverse effects.

Remember, phenylephrine is intended for temporary relief of symptoms and should not be used as a long-term solution without medical supervision.

Other uses for this medicine

  • Hypotension: Phenylephrine is occasionally used to treat low blood pressure (hypotension) in certain clinical settings.
  • Ophthalmic Use: It’s also found in some eye drops used to dilate the pupil during eye examinations or to relieve eye redness and irritation.
  • Shock: In emergency medicine, phenylephrine may be administered to increase blood pressure in cases of shock.

What special precautions should I follow?

As for special precautions, here are some important points to consider:

  • Medical History: Inform your doctor about your medical history, especially if you have any heart conditions, high blood pressure, thyroid problems, diabetes, or other health issues.
  • Allergies: If you’re allergic to phenylephrine or any other medications, make sure to inform your doctor before taking it.
  • Pregnancy and Breastfeeding: If you are pregnant, planning to become pregnant, or breastfeeding, consult your doctor before using phenylephrine, as its safety during pregnancy and breastfeeding is not well-established.
  • Other Medications: Inform your doctor about all the medications, supplements, and herbal products you’re currently taking, as phenylephrine can interact with certain medications, such as MAO inhibitors, tricyclic antidepressants, and beta-blockers.
  • Driving and Operating Machinery: Phenylephrine can cause dizziness or drowsiness in some individuals. If you experience these side effects, avoid driving or operating machinery until you know how the medication affects you.
  • Overuse: Avoid exceeding the recommended dosage or frequency of phenylephrine, as overuse can lead to adverse effects and rebound congestion.

Always follow your doctor’s instructions and ask any questions you may have about phenylephrine or its use. It’s important to use this medication responsibly and under medical supervision.

What special dietary instructions should I follow?

Regarding special dietary instructions, there are generally no specific dietary restrictions associated with phenylephrine. However, maintaining a healthy diet can contribute to overall well-being and may help manage certain conditions for which phenylephrine is prescribed, such as hypertension.

What should I do if I forget a dose?

If you forget to take a dose of phenylephrine, take it as soon as you remember. However, if it’s almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not double the dose to catch up. If you’re unsure about what to do, consult your doctor or pharmacist for guidance. It’s essential to maintain the prescribed dosing schedule to ensure the medication’s effectiveness and to avoid potential adverse effects.

What side effects can this medication cause?

Phenylephrine, like any medication, can cause side effects, although not everyone experiences them. Common side effects of phenylephrine may include:

  • Increased Blood Pressure: Phenylephrine can elevate blood pressure, which may be problematic for individuals with hypertension or certain heart conditions.
  • Fast or Irregular Heartbeat: Some people may experience a rapid or irregular heartbeat (palpitations) while taking phenylephrine.
  • Dizziness or Lightheadedness: Phenylephrine can cause dizziness or a feeling of lightheadedness, especially when standing up quickly from a sitting or lying position.
  • Headache: Headaches are a common side effect of phenylephrine use.
  • Nausea or Vomiting: Some individuals may experience nausea or vomiting after taking phenylephrine.
  • Nervousness or Restlessness: Phenylephrine can sometimes cause feelings of nervousness or restlessness.
  • Trouble Sleeping (Insomnia): Some people may have difficulty falling asleep or staying asleep while taking phenylephrine.
  • Tremors: Tremors or shaking of the hands or other parts of the body can occur as a side effect of phenylephrine.
  • Increased Urination: Phenylephrine can lead to increased urination (polyuria) in some individuals.
  • Dry Mouth or Throat: Dry mouth or throat can occur as a result of phenylephrine’s decongestant effects.

These side effects are usually mild and temporary. However, if any of these side effects persist or worsen, or if you experience more serious side effects such as chest pain, difficulty breathing, or severe dizziness, seek medical attention immediately.

It’s important to note that this list is not exhaustive, and other side effects may occur. If you have any concerns about the side effects of phenylephrine or experience any unusual symptoms while taking it, consult your doctor or pharmacist for advice.

What should I know about storage and disposal of this medication?

When it comes to storage and disposal of phenylephrine, here’s what you should know:


  • Keep phenylephrine in its original container, tightly closed, and out of reach of children.
  • Store it at room temperature away from excess heat and moisture, unless otherwise directed by the medication label.
  • Do not freeze phenylephrine unless instructed to do so by the manufacturer.
  • Avoid storing phenylephrine in the bathroom or near sinks. Moisture and humidity can degrade the medication.


  • Dispose of unused or expired phenylephrine properly according to local regulations or guidelines.
  • Do not flush phenylephrine down the toilet or pour it down the drain unless instructed to do so by the medication label or by your pharmacist.
  • Consult your pharmacist or local waste disposal facility for information on how to properly dispose of phenylephrine.

In case of emergency/overdose

  • If you suspect an overdose of phenylephrine or experience severe symptoms such as difficulty breathing, chest pain, rapid heartbeat, seizures, or loss of consciousness, seek immediate medical attention by calling emergency services.
  • If possible, provide emergency responders or healthcare professionals with information about the amount of phenylephrine ingested and when it was taken.

What other information should I know?

  • Phenylephrine is for temporary relief of symptoms and should not be used for prolonged periods without medical supervision.
  • Do not exceed the recommended dosage or frequency of phenylephrine, as it can lead to adverse effects.
  • Inform your healthcare provider about all medications, supplements, and herbal products you are taking before using phenylephrine, as it can interact with certain drugs.
  • Keep all appointments with your doctor while taking phenylephrine to monitor your progress and response to the medication.

By following these guidelines, you can ensure the safe storage, disposal, and use of phenylephrine. If you have any questions or concerns, consult your doctor or pharmacist for assistance.

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