Swallow the medicine without crushing or chewing it.
This medicine may be taken with or without food, but it is important to take it the same way each time.
This medicine will work best if you take it at about the same time every day.
Store at room temperature away from heat, light, and moisture. Do not keep in the bathroom.
Avoid drinks with caffeine while on this medicine.
It is important that you keep taking each dose of this medicine on time even if you are feeling well.
If you forget a dose, just wait. Use the next dose at the usual time. Do not use 2 doses at once.
Drug interactions can change how medicines work or increase risk for side effects. Tell your health care providers about all medicines taken. Include prescription and over-the-counter medicines, vitamins, and herbal medicines. Speak with your doctor or pharmacist before starting or stopping any medicine.
Tell your doctor if symptoms do not get better or if they get worse.
This medicine will not stop an asthma attack once it has started. If you have an inhaler to stop an asthma attack, be sure to always carry that inhaler with you to use during an asthma attack.
The foods you eat can change how well this medicine works. Tell your doctor about the types of food you normally eat. Ask your doctor for a list of foods that can affect this medicine. Do not significantly change the foods you normally eat while on this medicine.
Keep all appointments for medical exams and tests while on this medicine.
Do not take the medicine more than once during 24 hours.
Tell your doctor and pharmacist if you ever had an allergic reaction to a medicine.
Some patients taking this medicine have experienced serious side effects. Please speak with your doctor to understand the risks and benefits associated with this medicine.
Do not use the medication any more than instructed.
If you drink more than a few alcoholic beverages each day, ask your doctor whether you should be on this medicine.
Smoking may affect the level of this medicine in your body. Tell your doctor if you smoke, or stop smoking while on this medicine.
Tell the doctor or pharmacist if you are pregnant, planning to be pregnant, or breastfeeding.
Do not take St. John's wort while on this medicine.
Do not share this medicine with anyone who has not been prescribed this medicine.
Information about Theophylline Extended Release Oral Tablet 600 mg (THEOPHYLLINE SUSTAINED-RELEASE - ORAL)
The following is a list of some common side effects from this medicine. Please speak with your doctor about what you should do if you experience these or other side effects.
agitated feeling or trouble sleeping
diarrhea
irritability
nausea and vomiting
restlessness
shakiness
increased urinary frequency
Call your doctor or get medical help right away if you notice any of these more serious side effects:
confusion
dizziness
fainting
fast, irregular, or slow heartbeat
muscle cramps
seizures
severe or persistent vomiting
A few people may have an allergic reaction to this medicine. Symptoms can include difficulty breathing, skin rash, itching, swelling, or severe dizziness. If you notice any of these symptoms, seek medical help quickly.
Please speak with your doctor, nurse, or pharmacist if you have any questions about this medicine.
IMPORTANT NOTE: This document tells you briefly how to take your medicine, but it does not tell you all there is to know about it. Your doctor or pharmacist may give you other documents about your medicine. Please talk to them if you have any questions. Always follow their advice.
There is a more complete description of this medicine available in English. Scan this code on your smartphone or tablet or use the web address below. You can also ask your pharmacist for a printout. If you have any questions, please ask your pharmacist.
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Conditions of Use: The information in this database is intended to supplement, not substitute for the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment. The display and use of this drug information is subject to express Terms of Use.
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