Inform your doctor of your allergies (food or drugs), medical conditions and medical history before taking this drug, especially of: severe heart/blood vessel disease (e.g., coronary artery disease), certain mental/mood condition (psychosis), diabetes, underactive thyroid (hypothyroidism), brain disorders (e.g., seizures, brain damage), kidney disease, liver disease, personal or family history of regular use/abuse of drugs.
Avoid all alcoholic beverages or alcohol-containing products/foods (e.g., cough and cold syrups, mouthwash, aftershave, sauces, vinegars) while taking and until 2 weeks after taking this medication. Using alcohol with this medication may produce the following symptoms: flushing, throbbing headache, breathing problems (e.g., shortness of breath, fast breathing), nausea, vomiting, dizziness, extreme tiredness, fainting, fast/irregular heartbeat, or blurred vision.
A more serious reaction with this medication and alcohol may include trouble breathing, seizures, loss of consciousness, chest/jaw/left arm pain. Seek immediate medical attention if you have these symptoms.
For pregnant and nursing (breastfeeding) women, consult your doctor before using this medication.
Before using this drug, tell your doctor of the current medications, products (herbal/nonprescription) that you are taking especially of: alcohol-containing products (e.g., cough and cold syrups, aftershave), metronidazole, amitriptyline, “blood thinners” (e.g., warfarin), certain medications for seizures (e.g., hydantoins such as phenytoin/fosphenytoin), isoniazid, theophylline.
Avoid caffeine- containing beverages/products because this drug increases the side effects of caffeine.
This drug may interfere with certain laboraty tests.