triprolidine (Histex PD Drops, Histex Syrup, M-Hist PD)

Brand Names: Histex PD Drops, Histex Syrup, M-Hist PD, Tripohist, Vanaclear PD, Vanahist PD, Zymine

Generic Name: triprolidine

• What is triprolidine?
• What are the possible side effects of triprolidine?
• What is the most important information I should know about triprolidine?
• What should I discuss with my healthcare provider before taking triprolidine?
• How should I take triprolidine?
• What happens if I miss a dose?
• What happens if I overdose?
• What should I avoid while taking triprolidine?
• What other drugs will affect triprolidine?
• Where can I get more information?

Triprolidine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.

Triprolidine is used to treat sneezing, runny nose, watery eyes, hives, skin rash, itching, and other cold or allergy symptoms.

Triprolidine may also be used for purposes not listed in this medication guide.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using triprolidine and call your doctor at once if you have:

• painful or difficult urination.

Common side effects may include:

• headache, dizziness, drowsiness;
• blurred vision;
• dry mouth, nose, or throat;
• nausea, vomiting, loss of appetite, constipation;
• increased urination; or
• feeling nervous or restless (especially in children).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

You should not use antihistamine medication to make a child sleepy.

You should not use triprolidine if you are allergic to it.

Ask a doctor or pharmacist if it is safe for you to use this medicine if you have other medical conditions, especially:

• a breathing disorder such as chronic bronchitis or emphysema;
• blockage in your digestive tract (stomach or intestines);
• kidney disease;
• urination problems,
• glaucoma; or
• if you take potassium (Cytra, Epiklor, K-Lyte, K-Phos, Kaon, Klor-Con, Polycitra, Urocit-K).

It is not known whether triprolidine will harm an unborn baby. Ask a doctor before using this medicine if you are pregnant.

It is not known whether triprolidine passes into breast milk or if it could affect a nursing baby. Antihistamines can slow breast milk production. Ask a doctor before using this medicine if you are breast-feeding.

Artificially sweetened liquid medicine may contain phenylalanine. Check the medication label if you have phenylketonuria (PKU).

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Cough or cold medicine is usually taken only for a short time until your symptoms clear up.

Do not give this medicine to a child younger than 4 years old. Always ask a doctor before giving a cough or cold medicine to a child. Death can occur from the misuse of cough and cold medicines in very young children.

You should not use antihistamine medication to make a child sleepy.

Measure liquid medicine with the dosing syringe provided, or with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.

Do not take for longer than 7 days in a row. Call your doctor if your symptoms do not improve after 7 days of treatment, or if you have a fever with a headache, cough, or skin rash.

If you need surgery, tell the surgeon ahead of time that you are using triprolidine. You may need to stop using the medicine for a short time.

Store at room temperature away from moisture and heat. Do not allow the liquid form of this medicine to freeze.

SLIDESHOW

Could I Be Allergic? Discover Your Allergy Triggers See Slideshow

Since triprolidine is used when needed, you may not be on a dosing schedule. If you are on a schedule, use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

This medicine may cause blurred vision or impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert and able to see clearly.

Drinking alcohol can increase certain side effects of triprolidine.

Ask a doctor or pharmacist before using any other cold, cough, allergy, or sleep medicine. Many combination medicines contain antihistamines. Taking certain products together can cause you to get too much of this type of medicine.

Avoid becoming overheated or dehydrated during exercise and in hot weather. Triprolidine can decrease sweating and you may be more prone to heat stroke.

Ask a doctor or pharmacist before using this medicine if you are also using any other drugs, including prescription and over-the-counter medicines, vitamins, and herbal products. Some medicines can cause unwanted or dangerous effects when used together. Not all possible interactions are listed in this medication guide.

Taking this medicine with other drugs that make you sleepy or slow your breathing can worsen these effects. Ask your doctor before taking triprolidine with a sleeping pill, narcotic pain medicine, muscle relaxer, or medicine for anxiety, depression, or seizures.

Your pharmacist can provide more information about triprolidine.

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