Antihistamine, decongestant, and anticholinergic combination (oral route)

Allerx-D, Dallergy, Extendryl JR, Extendryl SR, Phenylephrine CM, Rescon ER, Stahist

In November 2000, the Food and Drug Administration (FDA) issued a public health warning regarding phenylpropanolamine (PPA) due to the risk of hemorrhagic stroke. The FDA, supported by results of a research program, requested that manufacturers voluntarily discontinue marketing products that contain PPA and that consumers work with their healthcare providers to select alternative products. Antihistamine, decongestant, and anticholinergic combinations are used to treat the nasal congestion (stuffy nose) and runny nose caused by allergies and/or the common cold. Antihistamines work by preventing the effects of a substance called histamine, which is produced by the body. Histamine can cause itching, sneezing, runny nose, and watery eyes. The antihistamine contained in these combinations is chlorpheniramine. The decongestants in these combinations, phenylephrine, and pseudoephedrine produce a narrowing of blood vessels. This leads to clearing of nasal congestion, but it may also cause an increase in blood pressure in patients who have high blood pressure. Anticholinergics, such as atropine, hyoscyamine, methscopolamine, and scopolamine may help produce a drying effect in the nose and chest. Some of these medicines are available without a prescription. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years of age.Using these medicines in very young children might cause serious or possibly life-threatening side effects . This product is available in the following dosage forms:

Tell your doctor if you have ever had any unusual or allergic reaction to medicines in this group or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully. Very young children are usually more sensitive than adults to the effects of this medicine. Increases in blood pressure, nightmares or unusual excitement, nervousness, restlessness, or irritability may be more likely to occur in children. Also, when anticholinergics are given to children during hot weather, a rapid increase in body temperature may occur, which may lead to heat stroke. In infants and children, especially those with spastic paralysis or brain damage, this medicine may be especially likely to cause severe side effects. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years of age.Using these medicines in very young children might cause serious or possibly life-threatening side effects . Confusion or memory loss, difficult and painful urination, dizziness, drowsiness, dryness of mouth, or convulsions (seizures) may be more likely to occur in the elderly, who are usually more sensitive than younger adults to the effects of this medicine. Also, nightmares or unusual excitement, nervousness, restlessness, or irritability may be more likely to occur in elderly patients. In addition, eye pain may occur, which may be a sign of glaucoma. For the individual ingredients of these combinations, the following apply: Small amounts of antihistamines, decongestants, and anticholinergics may pass into the breast milk. Use is not recommended since this medicine may cause side effects, such as unusual excitement or irritability, in the nursing baby. Also, since this medicine tends to decrease the secretions of the body, it is possible that the flow of breast milk may be reduced in some women. Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking any of these medicines, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive. Using medicines in this class with any of the following medicines is not recommended. Your doctor may decide not to treat you with a medication in this class or change some of the other medicines you take. Using medicines in this class with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines. Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco. The presence of other medical problems may affect the use of medicines in this class. Make sure you tell your doctor if you have any other medical problems, especially: