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Dallergy (Generic Chlorpheniramine)

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Why is this medication prescribed?

Dallergy is a combination medication typically prescribed for the temporary relief of symptoms associated with seasonal allergies, such as sneezing, runny or itchy nose, itchy or watery eyes, and nasal congestion.

Here’s a breakdown of its components and their functions:

  • Chlorpheniramine Maleate: This is an antihistamine that helps to alleviate symptoms caused by histamine release in allergic reactions. It works by blocking the effects of histamine, reducing symptoms like itching, sneezing, and a runny nose.
  • Methscopolamine Nitrate: This component is an anticholinergic agent, which helps to dry up secretions and reduce nasal and respiratory tract congestion.
  • Phenylephrine Hydrochloride: Phenylephrine is a decongestant that constricts blood vessels, particularly in the nasal passages, helping to relieve congestion.

How should this medicine be used?

Dallergy is typically taken orally with or without food, usually every 4 to 6 hours as needed for symptom relief. It’s important to follow the dosage instructions provided by your healthcare provider or as indicated on the medication label.

Here are some general guidelines for using Dallergy:

  • Read the Label: Always read the medication label carefully before taking Dallergy. Pay attention to the dosage instructions, warnings, and precautions.
  • Dosage: Take the prescribed dosage as directed by your healthcare provider. Do not exceed the recommended dosage or take Dallergy more frequently than instructed.
  • Swallow Whole: Swallow the Dallergy tablets whole with a full glass of water. Do not crush, chew, or break the tablets unless directed to do so by your doctor.
  • Timing: Take Dallergy at regular intervals as prescribed, usually every 4 to 6 hours. Do not take it more often than recommended.
  • Avoid Certain Substances: Avoid consuming alcohol while taking Dallergy, as it may increase the risk of side effects such as drowsiness. Additionally, avoid taking other medications that contain similar ingredients without consulting your healthcare provider.
  • Storage: Store Dallergy at room temperature away from moisture, heat, and light. Keep it out of reach of children and pets.
  • Consult Your Healthcare Provider: If you have any questions or concerns about how to use Dallergy, consult your healthcare provider or pharmacist for personalized guidance.

Remember, Dallergy is meant for temporary relief of allergy symptoms, and prolonged use should be avoided unless specifically directed by a healthcare professional. If your symptoms persist or worsen despite taking Dallergy, seek medical advice promptly.

Other uses for this medicine

Dallergy is primarily prescribed for the relief of allergy symptoms, but it may have other uses as determined by your healthcare provider. Some off-label uses may include the treatment of cold symptoms or other respiratory conditions with similar symptoms to allergies. However, it’s essential to use Dallergy only for the purposes prescribed by your doctor and to follow their instructions carefully.

What special precautions should I follow?

When using Dallergy, there are several special precautions you should keep in mind:

  • Allergies: Inform your healthcare provider if you have any allergies to chlorpheniramine maleate, methscopolamine nitrate, phenylephrine hydrochloride, or any other medications.
  • Medical Conditions: Before taking Dallergy, inform your healthcare provider about any medical conditions you have, especially:
    • Heart disease
    • High blood pressure
    • Thyroid disorders
    • Glaucoma
    • Enlarged prostate
    • Stomach or intestinal problems
    • Urinary problems
    • Liver or kidney disease
  • Pregnancy and Breastfeeding: If you are pregnant or breastfeeding, consult your healthcare provider before using Dallergy. It’s important to weigh the potential risks and benefits with your doctor before taking any medication during pregnancy or while breastfeeding.
  • Interactions: Dallergy may interact with certain medications, including prescription and over-the-counter drugs, as well as herbal supplements. Inform your healthcare provider about all the medications and supplements you are currently taking to avoid potential interactions.
  • Driving and Operating Machinery: Dallergy may cause dizziness, drowsiness, or blurred vision. Avoid driving, operating machinery, or engaging in activities that require alertness until you know how Dallergy affects you.
  • Alcohol: Avoid consuming alcohol while taking Dallergy, as it may increase the risk of side effects such as drowsiness and dizziness.
  • Overdose: Taking more than the recommended dosage of Dallergy can lead to overdose symptoms such as severe drowsiness, confusion, hallucinations, rapid heart rate, seizures, and even death. Seek immediate medical attention if you suspect an overdose.
  • Storage: Store Dallergy at room temperature away from moisture, heat, and light. Keep it out of reach of children and pets.

Always follow your healthcare provider’s instructions and consult them if you have any questions or concerns about using Dallergy or if you experience any adverse effects while taking it.

What special dietary instructions should I follow?

As for special dietary instructions, there are no specific dietary restrictions associated with Dallergy. However, it’s essential to maintain a balanced diet and stay hydrated while taking this medication.

What should I do if I forget a dose?

If you forget to take a dose of Dallergy, 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 up on doses to make up for a missed one. If you are unsure about what to do, consult your healthcare provider or pharmacist for guidance.

What side effects can this medication cause?

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

  • Drowsiness
  • Dizziness
  • Blurred vision
  • Dry mouth, nose, or throat
  • Constipation
  • Difficulty urinating
  • Nausea
  • Upset stomach
  • Headache
  • Loss of appetite
  • Trouble sleeping (insomnia)
  • Nervousness or restlessness
  • Increased heart rate

These side effects are usually mild and temporary. However, if any of these side effects persist or worsen, or if you experience more severe side effects such as:

  • Severe dizziness or fainting
  • Irregular heartbeat or palpitations
  • Tremors or shaking
  • Difficulty breathing
  • Severe allergic reaction (rash, itching, swelling, severe dizziness, trouble breathing)

Seek immediate medical attention.

It’s essential to discuss any concerns or potential side effects with your healthcare provider. They can provide guidance on managing side effects or adjusting your treatment plan if needed. Additionally, if you have any unusual symptoms while taking Dallergy, contact your healthcare provider promptly.

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

Storage and Disposal:


  • Store Dallergy at room temperature away from moisture, heat, and light.
  • Keep it in its original packaging or container, tightly closed, and out of reach of children and pets.
  • Do not store Dallergy in the bathroom or near the kitchen sink where it could be exposed to moisture.


  • Dispose of unused or expired Dallergy properly according to local regulations or guidelines.
  • Do not flush medications down the toilet or pour them down the drain unless instructed to do so.
  • Consult your pharmacist or local waste disposal facility for proper disposal methods.

In case of emergency/overdose

  • In case of an overdose or emergency, such as severe drowsiness, confusion, hallucinations, rapid heart rate, seizures, or difficulty breathing, seek immediate medical attention or call your local poison control center at 1-800-222-1222 (in the United States).
  • Be prepared to provide information about the amount of Dallergy ingested, the time of ingestion, and any symptoms experienced.

What other information should I know?

  • Keep all appointments with your healthcare provider while taking Dallergy to monitor your progress and response to treatment.
  • Do not share Dallergy with others, even if they have similar symptoms, as it may not be suitable for their condition.
  • Inform any healthcare provider treating you about all the medications, supplements, and herbal products you are taking to avoid potential interactions.
  • Follow your healthcare provider’s instructions carefully, including dosage and frequency of administration.
  • If you have any questions or concerns about Dallergy, consult your healthcare provider or pharmacist for clarification.

By following these guidelines, you can ensure the safe and effective use of Dallergy while minimizing the risk of adverse effects or complications.

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