Why is this medication prescribed?

Chlorpheniramine is typically prescribed as an antihistamine medication to relieve symptoms of allergic conditions such as hay fever, allergic rhinitis, and allergic conjunctivitis. It works by blocking the action of histamine, a substance in the body that causes allergic symptoms like sneezing, itching, watery eyes, and runny nose.

How should this medicine be used?

Here are general guidelines on how Chlorpheniramine should be used:

• Dosage: The dosage of Chlorpheniramine can vary depending on the age of the patient and the severity of symptoms. It is usually taken orally in the form of tablets or syrup.
• Frequency: It is typically taken every 4 to 6 hours as needed for symptom relief.
• Administration: Chlorpheniramine can be taken with or without food. However, taking it with food may help reduce stomach upset.
• Special Instructions: Follow the dosage instructions provided by your doctor or pharmacist carefully. Do not exceed the recommended dose unless directed by your doctor. 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 continue with your regular dosing schedule. Store Chlorpheniramine in a cool, dry place away from direct sunlight and moisture.
• Duration of Use: Use Chlorpheniramine for the shortest duration necessary to relieve your symptoms. Consult your doctor if your symptoms persist or worsen despite treatment.
• Precautions: Inform your doctor about any other medications you are taking, including over-the-counter and prescription medications, as well as any existing medical conditions. Avoid consuming alcohol while taking Chlorpheniramine, as it can increase drowsiness and other side effects.

Always consult your healthcare provider for specific instructions tailored to your individual needs and condition.

Other uses for this medicine

• Common Cold: It may be used to alleviate symptoms such as runny nose and sneezing associated with the common cold.
• Itching: Chlorpheniramine can sometimes be used to relieve itching caused by conditions like eczema or insect bites.
• Motion Sickness: It is occasionally used to reduce symptoms of motion sickness, such as nausea and dizziness.

What special precautions should I follow?

Special Precautions:

• Allergies: Inform your doctor about any allergies you have, especially to antihistamines or any other medications.
• Medical Conditions: Disclose any existing medical conditions to your doctor, such as asthma, glaucoma, high blood pressure, thyroid problems, prostate problems, or urinary retention.
• Pregnancy and Breastfeeding: Consult your doctor before taking Chlorpheniramine if you are pregnant, planning to become pregnant, or breastfeeding. While it is generally considered safe during pregnancy, it’s essential to use it only under medical supervision.
• Children and Elderly: Use Chlorpheniramine with caution in children and elderly individuals, as they may be more sensitive to its effects, particularly the sedative effects.
• Driving and Operating Machinery: Chlorpheniramine can cause drowsiness and impair your ability to perform tasks requiring alertness, such as driving. Avoid activities that require mental alertness until you know how Chlorpheniramine affects you.
• Alcohol and Other Medications: Avoid consuming alcohol while taking Chlorpheniramine, as it can enhance drowsiness and other side effects. Additionally, inform your doctor about all other medications you are taking, including over-the-counter medications and herbal supplements, to avoid potential interactions.
• Overdose: Do not exceed the recommended dosage of Chlorpheniramine. Overdosing can lead to serious side effects, including seizures and death. If you suspect an overdose, seek medical attention immediately.

Always follow your doctor’s instructions and read the medication label carefully for specific information regarding Chlorpheniramine. If you have any concerns or experience any unusual symptoms while taking Chlorpheniramine, contact your healthcare provider promptly.

What special dietary instructions should I follow?

There are no specific dietary restrictions associated with Chlorpheniramine. However, to minimize potential side effects such as stomach upset, it may be helpful to take Chlorpheniramine with food or milk. Avoid consuming large amounts of grapefruit juice while taking Chlorpheniramine, as it can interfere with how the medication is absorbed in the body.

What should I do if I forget a dose?

If you miss a dose of Chlorpheniramine, take it as soon as you remember. However, if it is 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.

What side effects can this medication cause?

Chlorpheniramine, like any medication, can cause side effects. Common side effects may include:

• Drowsiness: This is one of the most common side effects of Chlorpheniramine, especially at higher doses or in sensitive individuals. It can impair your ability to concentrate and perform tasks requiring alertness, such as driving.
• Dry Mouth: Chlorpheniramine can reduce saliva production, leading to a dry sensation in the mouth.
• Blurred Vision: Some individuals may experience blurred vision or difficulty focusing while taking Chlorpheniramine.
• Constipation: Chlorpheniramine can sometimes slow down bowel movements, leading to constipation.
• Urinary Retention: In some cases, Chlorpheniramine can cause difficulty urinating or urinary retention, especially in men with prostate problems.
• Dizziness: Feeling dizzy or lightheaded may occur, particularly when standing up quickly from a sitting or lying position.
• Nausea or Upset Stomach: Some people may experience mild stomach discomfort or nausea.
• Increased Heart Rate: Chlorpheniramine can occasionally cause palpitations or a faster heart rate.
• Sensitivity Reactions: Rarely, allergic reactions such as rash, itching, or swelling of the face, tongue, or throat may occur. Seek medical attention immediately if you experience any signs of a serious allergic reaction.

It’s essential to note that not everyone experiences these side effects, and the severity and frequency can vary from person to person. If you notice any unusual or persistent symptoms while taking Chlorpheniramine, consult your healthcare provider. They can provide guidance on managing side effects or adjust your treatment plan if necessary.

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

Storage and Disposal:

• Storage: Keep Chlorpheniramine tablets, capsules, or syrup in a tightly closed container at room temperature, away from moisture and direct sunlight. Avoid storing it in the bathroom or kitchen where moisture levels can fluctuate.
• Disposal: Dispose of expired or unused Chlorpheniramine properly. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Take unused medications to a drug take-back program or follow specific disposal instructions provided by your pharmacist.

In case of emergency/overdose

• Symptoms of Overdose: Symptoms of Chlorpheniramine overdose may include extreme drowsiness, confusion, hallucinations, seizures, shallow breathing, or even coma. If you suspect an overdose, seek immediate medical attention or contact a poison control center (1-800-222-1222 in the US).
• What to Do: If someone has overdosed and is unconscious, having difficulty breathing, or experiencing seizures, call emergency services immediately. Provide as much information as possible about the medication ingested and the person’s condition.

What other information should I know?

• Avoid Alcohol: Avoid consuming alcohol while taking Chlorpheniramine, as it can increase the risk of side effects such as drowsiness and dizziness.
• Driving and Activities: Chlorpheniramine can impair your ability to perform tasks requiring mental alertness, such as driving or operating machinery. Use caution until you know how Chlorpheniramine affects you.
• Medical Tests: Inform healthcare providers performing medical tests (such as allergy tests) that you are taking Chlorpheniramine, as it may interfere with test results.
• Pregnancy and Breastfeeding: Consult your doctor before using Chlorpheniramine if you are pregnant, planning to become pregnant, or breastfeeding. Use it only if clearly needed and under medical supervision.
• Allergic Reactions: If you experience signs of a serious allergic reaction (e.g., rash, itching, swelling of the face/tongue/throat, severe dizziness, trouble breathing), seek immediate medical attention.

Always follow your healthcare provider’s instructions regarding the use of Chlorpheniramine and notify them of any other medications you are taking or medical conditions you have. This will help ensure safe and effective treatment.