Histex PD Drops

Histex PD Drops is an antihistamine used to treat sneezing, runny nose, itchy nose and throat, and itchy or watery eyes caused by allergies like hay fever.

Histex PD Drops may also be used for reasons not mentioned in this medication guide.

Use exactly as directed on the label, or as prescribed by your doctor. Cold or cough medicine is only for short-term use until your symptoms clear up.

Always follow directions on the medicine label about giving cough or cold medicine to a child. Do not use the medicine only to make a child sleepy. Death can occur from the misuse of cough or cold medicines in very young children.

You must chew the chewable tablet before you swallow it.

Measure liquid medicine carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

Call your doctor if your symptoms do not improve after 7 days, or if you have a fever, rash, or headaches.

If you need surgery or medical tests, tell the doctor ahead of time if you have taken this medicine within the past few days.

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

Follow all instructions on your medicine label and package. Inform all your healthcare providers about your medical conditions, allergies, and all medications you are taking.

You should never use antihistamine medication to make a child sleepy.

You should not use Histex PD Drops if you are allergic to it.

Ask a doctor or pharmacist if Histex PD Drops is safe to use if you have:

• a breathing disorder such as chronic bronchitis or emphysema;
• glaucoma; or
• an enlarged prostate and urination problems.

Ask a doctor before using this medicine if you are pregnant or breastfeeding.

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

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

Histex PD Drops may cause serious side effects. Stop using Histex PD Drops and call your doctor right away if you have:

• painful or difficult urination.

Common side effects of Histex PD Drops may include:

• dizziness, drowsiness;
• blurred vision;
• dry mouth, nose, or throat;
• 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.

Since Histex PD Drops is used as needed, you might not have a regular dosing schedule. If you miss a dose and it's close to the time for your next dose, just skip the missed dose. Do not take two doses at the same time.

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

• Avoid driving or hazardous activity until you know how Histex PD Drops will affect you. Your reactions could be impaired.

• Drinking alcohol can increase certain side effects of triprolidine.

• Ask a doctor or pharmacist before using other cough or cold medicines that may contain similar ingredients.

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

Avoid using this medicine with other drugs that can make you sleepy or slow your breathing (like opioid medicine, muscle relaxers, or medicine for anxiety or seizures). Check with a doctor or pharmacist before using any other medication, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are included in this medication guide.