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Bromhist PDX (Generic Phenylephrine)

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Why is this medication prescribed?

Bromhist PDX is a combination medication containing four active ingredients: brompheniramine, dextromethorphan, guaifenesin, and phenylephrine. It’s typically prescribed to relieve symptoms associated with respiratory conditions like the common cold, flu, allergies, or sinusitis.

How should this medicine be used?

Bromhist PDX is typically taken orally with a full glass of water. The dosage and frequency of use will depend on several factors, including your age, medical condition, and response to treatment. It’s important to follow the specific instructions provided by your healthcare provider or the medication label.

Here are some general guidelines:

  • Dosage: Take the medication exactly as prescribed by your doctor or as directed on the label. Do not take more or less of it or take it more often than prescribed.
  • Timing: Bromhist PDX may be taken with or without food. However, if it upsets your stomach, taking it with food or milk may help alleviate any discomfort.
  • Swallowing: Swallow the tablets whole. Do not crush, chew, or break them unless instructed to do so by your doctor or pharmacist.
  • Avoiding Alcohol: It’s advisable to avoid consuming alcohol while taking Bromhist PDX, as it may increase the risk of certain side effects such as drowsiness or dizziness.
  • Hydration: Drink plenty of fluids while taking Bromhist PDX, unless otherwise directed by your healthcare provider. Staying hydrated can help loosen mucus and keep your respiratory system functioning properly.
  • Duration of Use: Use Bromhist PDX for the shortest duration necessary to relieve your symptoms. Do not continue using it for longer than directed unless advised by your doctor.
  • Storage: Store Bromhist PDX at room temperature, away from moisture and heat. Keep it out of reach of children.

If you have any questions or concerns about how to use Bromhist PDX, don’t hesitate to consult your healthcare provider or pharmacist for guidance. They can provide personalized advice based on your individual circumstances.

Other uses for this medicine

Bromhist PDX is primarily prescribed to relieve symptoms associated with respiratory conditions like the common cold, flu, allergies, or sinusitis. However, it’s essential to note that this medication should only be used for its intended purpose as directed by your healthcare provider. Using it for other purposes not listed in the medication guide or without a prescription can be dangerous and ineffective.

What special precautions should I follow?

As for special precautions to take when using Bromhist PDX, here are some important considerations:

  • Medical History: Before taking Bromhist PDX, inform your doctor or pharmacist about your medical history, especially if you have any pre-existing conditions such as high blood pressure, heart disease, diabetes, thyroid problems, glaucoma, prostate problems, or liver or kidney disease. Certain ingredients in Bromhist PDX may exacerbate these conditions or interact with medications you are currently taking.
  • Allergies: If you have known allergies to any of the active or inactive ingredients in Bromhist PDX or similar medications, inform your healthcare provider before starting treatment.
  • Pregnancy and Breastfeeding: If you are pregnant or breastfeeding, consult your doctor before using Bromhist PDX. Some ingredients in the medication may pass into breast milk and could potentially harm a nursing infant.
  • Children and Elderly: Special caution should be exercised when administering Bromhist PDX to children or elderly individuals. Dosage adjustments may be necessary based on age and weight, and the risk of certain side effects may be higher in these populations.
  • Driving and Operating Machinery: Bromhist PDX may cause drowsiness, dizziness, or blurred vision. Avoid driving, operating heavy machinery, or engaging in activities that require mental alertness until you know how this medication affects you.
  • Alcohol and Sedatives: Avoid consuming alcohol or taking other medications that cause drowsiness while using Bromhist PDX, as this can increase the risk of side effects such as extreme drowsiness, dizziness, or difficulty concentrating.
  • Interactions: Inform your healthcare provider about all prescription, over-the-counter, and herbal medications you are taking before starting Bromhist PDX, as it may interact with certain drugs, including MAO inhibitors, antidepressants, blood pressure medications, and other cough and cold products.
  • Overdose: Taking more than the recommended dose of Bromhist PDX can lead to serious health complications, including overdose. If you suspect an overdose, seek immediate medical attention or contact a poison control center.

Always follow your healthcare provider’s instructions and the medication label carefully when using Bromhist PDX to ensure safe and effective treatment. If you have any questions or concerns about its use, don’t hesitate to consult your doctor or pharmacist for guidance.

What special dietary instructions should I follow?

As for special dietary instructions, there are typically no specific dietary restrictions associated with Bromhist PDX. However, it’s essential to maintain a balanced diet and stay hydrated while using this medication, especially if you have a respiratory illness. Drinking plenty of fluids can help thin mucus and relieve congestion.

What should I do if I forget a dose?

If you forget to take a dose of Bromhist PDX, take it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not double the dose to make up for the missed one. If you have any concerns or questions about missed doses, consult your healthcare provider or pharmacist for guidance.

What side effects can this medication cause?

Bromhist PDX, like any medication, may cause side effects in some individuals. Not everyone will experience these side effects, and their severity can vary. Here are some potential side effects associated with Bromhist PDX:

  • Drowsiness: This is one of the most common side effects of Bromhist PDX. It may impair your ability to concentrate or operate machinery safely.
  • Dizziness: Some people may experience dizziness or lightheadedness while taking Bromhist PDX.
  • Dry Mouth: Bromhist PDX can cause dryness in the mouth, which may contribute to discomfort or difficulty swallowing.
  • Nausea or Upset Stomach: Gastrointestinal symptoms such as nausea, vomiting, or upset stomach may occur in some individuals.
  • Headache: Headaches are another possible side effect of Bromhist PDX.
  • Blurred Vision: Some people may experience blurred vision or difficulty focusing while taking this medication.
  • Increased Heart Rate: Phenylephrine, one of the active ingredients in Bromhist PDX, can sometimes cause an increase in heart rate or palpitations.
  • Urinary Retention: In rare cases, Bromhist PDX may cause difficulty urinating or urinary retention, particularly in men with prostate enlargement.
  • Allergic Reactions: Allergic reactions to Bromhist PDX are rare but can occur. Seek medical attention immediately if you experience symptoms such as rash, itching, swelling, severe dizziness, or trouble breathing.
  • Serious Side Effects: Although uncommon, Bromhist PDX may cause more severe side effects such as hallucinations, seizures, irregular heartbeat, or difficulty breathing. If you experience any of these symptoms, seek medical attention immediately.

It’s essential to monitor your body’s response to Bromhist PDX and report any unusual or concerning symptoms to your healthcare provider. Additionally, be aware that this list may not include all possible side effects. If you have any questions or concerns about the side effects of Bromhist PDX, consult your doctor or pharmacist for personalized advice.

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

When it comes to storage and disposal of Bromhist PDX:


  • Store Bromhist PDX at room temperature, away from moisture, heat, and direct light.
  • Keep it out of reach of children and pets.
  • Do not store Bromhist PDX in the bathroom, as moisture can degrade the medication.


  • Dispose of unused or expired Bromhist PDX properly according to local regulations or guidelines.
  • Do not flush medications down the toilet or pour them into a drain unless instructed to do so.
  • Check with your pharmacist or local waste disposal facility for proper disposal methods, such as medication take-back programs or community drug disposal events.

In case of emergency/overdose

  • In case of an emergency or overdose, call your local emergency services or poison control center immediately.
  • Symptoms of overdose may include severe drowsiness, dizziness, confusion, hallucinations, rapid heartbeat, difficulty breathing, seizures, or loss of consciousness.
  • Do not wait for symptoms to worsen before seeking medical help.

What other information should I know?

  • Inform all healthcare providers involved in your care about all medications you are taking, including Bromhist PDX, to avoid potential drug interactions.
  • Avoid alcohol and other sedatives while taking Bromhist PDX, as they can increase the risk of side effects such as drowsiness or dizziness.
  • Follow your healthcare provider’s instructions regarding dosage, frequency, and duration of Bromhist PDX treatment.
  • If you have any questions or concerns about Bromhist PDX or its usage, consult your doctor or pharmacist for guidance.
  • Do not share Bromhist PDX with others, even if they have similar symptoms, as it may not be appropriate or safe for them.

By following these guidelines, you can ensure the safe and effective use of Bromhist PDX and minimize the risk of adverse effects or complications.

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