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Vituz (Generic Chlorpheniramine)

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Why is this medication prescribed?

Chlorpheniramine is an antihistamine medication that is commonly prescribed to relieve symptoms associated with allergies. It works by blocking the action of histamine, a substance in the body that contributes to allergy symptoms such as sneezing, itching, watery eyes, and runny nose.

Chlorpheniramine is often used to treat various allergic conditions, including:

  • Allergic rhinitis (hay fever): This condition involves inflammation of the nasal passages due to an allergic reaction to airborne allergens such as pollen, dust mites, or animal dander.
  • Allergic conjunctivitis: This is inflammation of the conjunctiva (the clear membrane covering the white part of the eye and the inner surface of the eyelids) caused by an allergic reaction.
  • Allergic dermatitis: Chlorpheniramine may be used to alleviate itching and other symptoms associated with allergic skin conditions.

How should this medicine be used?

Chlorpheniramine is typically taken orally in the form of tablets, capsules, or syrup. The specific dosage and frequency of administration depend on various factors, including the patient’s age, medical condition, and response to treatment. It’s important to follow the instructions provided by your healthcare provider or those on the medication label. Here are some general guidelines:

  • Dosage: The recommended dosage can vary, but it is usually taken 2 to 4 times a day. Your healthcare provider will determine the appropriate dose based on your specific needs.
  • Administration: Chlorpheniramine can be taken with or without food. If you are using the liquid form (syrup), use a measuring device to ensure accurate dosing.
  • Avoiding certain substances: Alcohol and certain medications may increase the risk of side effects such as drowsiness when taken with chlorpheniramine. It’s essential to inform your healthcare provider about all the medications, including over-the-counter drugs and herbal supplements, that you are taking.
  • Drowsiness caution: Chlorpheniramine can cause drowsiness, so it’s important to be cautious when performing activities that require alertness, such as driving or operating machinery. Avoid consuming alcohol while taking chlorpheniramine, as it can enhance drowsiness.
  • Duration of use: Follow your healthcare provider’s recommendations regarding the duration of treatment. Using chlorpheniramine for an extended period without medical supervision is not advisable.
  • Missed dose: If you miss a dose, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and resume your regular dosing schedule. Do not double up on doses to make up for a missed one.

It’s crucial to consult with your healthcare provider before starting or stopping any medication and to inform them of any side effects or concerns you may have. This information provides a general overview, and individual circumstances may require different approaches to medication use.

Other uses for this medicine

While chlorpheniramine is primarily used to alleviate allergy symptoms, it may also be used in certain cases for:

  • Motion Sickness: Chlorpheniramine can help reduce symptoms of motion sickness, such as nausea and vomiting.
  • Common Cold: It may be used to relieve symptoms like a runny nose and sneezing associated with the common cold.
  • Itching: Chlorpheniramine can be used to relieve itching caused by various skin conditions, including allergic reactions.

What special precautions should I follow?

Special precautions should be taken when using chlorpheniramine, and it’s important to inform your healthcare provider about any existing medical conditions or medications you are taking. Here are some general precautions:

  • Drowsiness: Chlorpheniramine can cause drowsiness, so it’s important to avoid activities that require alertness, such as driving or operating machinery, until you know how the medication affects you.
  • Alcohol and Other Sedatives: Avoid consuming alcohol or other sedative medications while taking chlorpheniramine, as it may increase the risk of excessive sedation.
  • Medical Conditions: Inform your healthcare provider if you have any pre-existing medical conditions, such as glaucoma, an enlarged prostate, or urinary retention, as chlorpheniramine may worsen these conditions.
  • Pregnancy and Breastfeeding: Consult with your healthcare provider if you are pregnant or breastfeeding, as the safety of chlorpheniramine in these situations is not well-established.
  • Children and Elderly: Use caution in children and the elderly, as they may be more sensitive to the sedative effects of chlorpheniramine.

Always follow the dosing instructions provided by your healthcare provider or on the medication packaging, and if you have any concerns or experience unusual side effects, contact your healthcare provider promptly. It’s crucial to use chlorpheniramine as directed and not exceed the recommended dosage.

What special dietary instructions should I follow?

Regarding dietary instructions, chlorpheniramine is generally taken orally with or without food. However, it’s essential to follow the specific instructions provided by your healthcare provider or on the medication packaging. Some formulations may be more effective when taken with food, while others may be taken on an empty stomach.

What should I do if I forget a dose?

If you forget to take a dose of chlorpheniramine, take it as soon as you remember. However, if it’s almost time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one.

What side effects can this medication cause?

Chlorpheniramine, like any medication, can cause side effects. Not everyone will experience these side effects, and some individuals may experience them to varying degrees. Common side effects of chlorpheniramine include:

  • Drowsiness: This is one of the most common side effects. Chlorpheniramine has a sedative effect and can cause drowsiness, which may impair your ability to concentrate or operate machinery.
  • Dry Mouth: Chlorpheniramine can reduce saliva production, leading to a dry or parched feeling in the mouth.
  • Blurred Vision: Some people may experience blurred vision as a side effect of chlorpheniramine.
  • Constipation: Chlorpheniramine can slow down the movement of the digestive tract, potentially leading to constipation.
  • Difficulty Urinating: In individuals with an enlarged prostate or other urinary issues, chlorpheniramine may cause difficulty in urination.
  • Upset Stomach or Nausea: Some individuals may experience stomach discomfort or nausea.
  • Nervousness or Excitability: In rare cases, chlorpheniramine may cause nervousness or excitability, especially in children.
  • Allergic Reactions: Although uncommon, some people may experience allergic reactions to chlorpheniramine, such as rash, itching, or swelling.

It’s important to note that serious side effects are rare, but if you experience any unusual or severe symptoms, it’s crucial to seek medical attention promptly.

Additionally, inform your healthcare provider if you are taking other medications, as chlorpheniramine may interact with certain drugs. It’s essential to discuss your medical history and any concerns about potential side effects with your healthcare provider before starting chlorpheniramine or any other medication. If you notice any unexpected or concerning symptoms while taking chlorpheniramine, contact your healthcare provider for guidance.

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


  • Store in a Cool, Dry Place: Keep chlorpheniramine in a cool, dry place away from direct sunlight and moisture.
  • Follow Package Instructions: Always follow the storage instructions provided on the medication packaging.
  • Keep Out of Reach of Children: Store medications out of reach of children and pets, as accidental ingestion can be harmful.
  • Check Expiry Date: Do not use chlorpheniramine after the expiration date, as it may not be as effective or safe.


  • Follow Local Regulations: Dispose of chlorpheniramine according to local regulations. Do not flush medications down the toilet unless specifically instructed to do so.
  • Medication Take-Back Programs: Check if there are medication take-back programs in your community where you can safely dispose of unused or expired medications.
  • Mix with Unpalatable Substance: If no take-back program is available, you can mix the medication with an unpalatable substance (such as dirt or used coffee grounds) in a sealed plastic bag before throwing it in the trash. This helps prevent accidental ingestion.

In case of emergency/overdose

  • Seek Medical Attention: If you suspect an overdose or experience severe symptoms, seek medical attention immediately.
  • Symptoms of Overdose: Symptoms of chlorpheniramine overdose may include extreme drowsiness, confusion, hallucinations, seizures, or difficulty breathing.
  • Contact Poison Control Center: In the United States, you can contact the Poison Control Center at 1-800-222-1222 for guidance on what to do in case of an overdose.

What other information should I know?

  • Inform Healthcare Provider: Inform your healthcare provider about all the medications you are taking, including over-the-counter drugs, supplements, and herbal products. This helps prevent potential interactions.
  • Avoid Alcohol: Limit or avoid alcohol while taking chlorpheniramine, as it may increase drowsiness.
  • Regular Check-ups: Attend regular check-ups with your healthcare provider to monitor your response to the medication and address any concerns or side effects.

Always follow the advice and instructions provided by your healthcare provider or pharmacist. If you have specific questions or concerns about chlorpheniramine, it’s best to consult with your healthcare provider for personalized guidance based on your health status and medical history.

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