guaifenesin w/pseudoephedrine or dextromethorphan kit-oral, Med-Rx DM, Syn-Rx DM (cont.)
SIDE EFFECTS: Nausea, headache, loss of appetite, nervousness, or dizziness, or rash may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Tell your doctor immediately if you develop any of these serious side effects: blurred vision, unusually fast heartbeat, difficulty urinating (men only), trouble sleeping. Tell your doctor immediately if you develop any of these unlikely but serious side effects: chest pain, irregular heartbeat, mental/mood changes, convulsions. If you notice other effects not listed above, contact your doctor or pharmacist.
PRECAUTIONS: Tell your doctor your medical history, especially of: high blood pressure, heart problems, diabetes, glaucoma, thyroid problems, enlarged prostate, seizures, any allergies you may have (especially to other cough-and-cold products). Because this medication may make you dizzy, use caution engaging in activities requiring alertness such as driving or using machinery. Limit alcoholic beverages. Elderly patients may be more sensitive to the effects of this product. Use cautiously. This drug should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor. The pseudoephedrine in this combination product passes into breast milk and may have undesirable effects on a nursing infant. Therefore, this product is not recommended for use by nursing mothers.
DRUG INTERACTIONS: Tell your doctor of all prescription and nonprescription medications you may use, especially: beta-blockers (e.g., metoprolol, propranolol), digoxin, stimulant medications (e.g., dextroamphetamine, methylphenidate), certain other high blood pressure medicine (e.g., guanethidine, methyldopa, reserpine), sibutramine, drugs for depression, all cough-and-cold products. Do not use this medication if you have taken an MAO inhibitor (e.g., furazolidone, linezolid, moclobemide, phenelzine, procarbazine, selegiline) within the last 14 days. The guaifenesin in this product may interfere with certain laboratory tests (e.g., uric acid). Do not start or stop any medicine without doctor or pharmacist approval.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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