1. OTC and Prescription Drug Abuse Slideshow
2. Sex-Drive Killers: Causes of Low Libido
3. Slideshow: Common Allergy Triggers

What should I discuss with my healthcare provider before taking dexchlorpheniramine, methscopolamine, and pseudoephedrine (Durahist D, Histatab D)?

You should not use this medication if you are allergic to dexchlorpheniramine, methscopolamine, or pseudoephedrine.

Do not take dexchlorpheniramine, methscopolamine, and pseudoephedrine if you have used a monoamine oxidase inhibitor (MAOI) such as furazolidone (Furoxone), isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam, Zelapar), or tranylcypromine (Parnate) in the last 14 days. A dangerous drug interaction could occur, leading to serious side effects.

If you have any of these other conditions, you may need a dose adjustment or special tests:

• epilepsy or another seizure disorder;
• peripheral vascular disease such as Raynaud's syndrome;
• thyroid problems;
• asthma, emphysema, or chronic obstructive pulmonary disease (COPD);
• diabetes;
• glaucoma;
• an ulcer or an obstruction in the stomach;
• hiatal hernia or reflux disease;
• bladder problems or difficulty urinating;
• an enlarged prostate;
• high blood pressure, irregular heartbeats, or any type of heart disease; or
• myasthenia gravis.

FDA pregnancy category C. It is not known whether this medication will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using dexchlorpheniramine, methschopolamine, and pseudoephedrine.

This medication can pass into breast milk and may harm a nursing baby. Do not use dexchlorpheniramine, methschopolamine, and pseudoephedrine without telling your doctor if you are breast-feeding a baby.

Older adults may be more likely to have side effects from dexchlorpheniramine, methscopolamine, and pseudoephedrine.

How should I take dexchlorpheniramine, methscopolamine, and pseudoephedrine (Durahist D, Histatab D)?

Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.

You may take this medication with or without food.

Swallow the tablet with a full glass of water.

Do not crush or chew the tablet. Swallow the pill whole. To make the tablet easier to swallow, you may break it in half where the tablet is scored

Do not take dexchlorpheniramine, methscopolamine, and pseudoephedrine for longer than 7 days in a row. If your symptoms do not improve, or if they get worse and you also have a fever, talk to your doctor.

Store at room temperature away from moisture and heat.

Need help identifying pills and medications?
Use the pill finder tool on RxList.