Unicontin 400 mg is used in adults and children twelve years of age and older to treat breathing problems in patients with asthma, chronic bronchitis, emphysema, and other problems that cause spasms in the airways in the lungs. It contains the active ingredient Theophylline which causes the opening of airways in your lungs, making breathing easier for patients with above mentioned respiratory conditions.

Take Unicontin 400 mg exactly as directed by your doctor. Taking this medicine with or after your evening meal is best. Swallow the tablet with a glass of water while sitting or standing upright to ensure they reach your stomach quickly. Avoid chewing, crushing, or breaking the tablet.

Your doctor will do blood tests to make sure you are taking the dose that is appropriate for you. The usual starting dose for adults not already taking another medicine containing Theophylline is 400 to 600 mg once daily. For the treatment of children twelve years old and under and patients currently taking another medicine that contains Theophylline, your doctor will decide the dose.

Do not use Uncontin 400 mg if you are allergic to Theophylline, xanthine derivatives, or other components in the medicine. It should not be taken by heart patients or those who have ulcers in their stomachs or small intestines. Avoid giving this medicine to your child if you are already giving them ephedrine.  

To help avoid side effects and ensure proper use, inform your doctor if you have health conditions, including liver impairment, kidney problems, heart problems, high blood pressure, low levels of oxygen in your blood, thyroid problems, seizures, influenza, continuous high fever, and cystic fibrosis. Theophylline should not be used in an emergency where rapid relief of breathing problems is required. The product is not recommended for use in children under twelve. Also, certain medications may interact with Theophylline, so be sure to inform your doctor about all medications (prescription or non-prescription, including supplements) you may take.

Side effects may include nausea, vomiting, loss of appetite, headache, trouble sleeping,  rash, itching stomach pain, upset stomach, and feeling restless, irritable, or shaky. Talk to your doctor if you have a troublesome symptom or side effect not listed in this information guide or becomes bad enough to interfere with your daily activities.