Theophylline ER Ingredients:
What are Theophylline ER tablets or capsules ?
Theophylline ER is a bronchodilator, or medicine that helps to make
breathing easier. It relaxes the bronchial airways, improving the
flow of air through the lungs. Theophylline ER helps to reduce coughing,
wheezing, shortness of breath, or difficulty breathing in patients
with chronic (long-term) lung disorders such as asthma, bronchitis,
or emphysema. Theophylline ER occurs naturally in teas and is
chemically similar to caffeine or theobromine (found in cocoa).
Generic theophylline extended-release tablets and capsules are
What should my health care professional know before I take Theophylline ER ?
They need to know if you have any of these conditions:
- fever, flu or respiratory infection
- heart or blood vessel disease, or previous heart attack
- liver disease
- prostate trouble
- stomach disease, such as ulcers
- an unusual or allergic reaction to theophylline, aminophylline,
caffeine, theobromine, other medicines, foods, dyes, or
- pregnant or trying to get pregnant
How should I take Theophylline ER ?
Take Theophylline ER extended-release tablets or capsules by mouth.
Follow the directions on the prescription label. Swallow the tablets
or capsules whole with a drink of water; do not crush or chew. (Theo-Dur®
Sprinkle capsules can be opened and the contents sprinkled on soft
food, such as applesauce, before swallowing without chewing). Take
your doses at regular intervals; try to take doses at the same time
each day. Do not take your medicine more often than directed.
What if I miss a Theophylline ER dose ?
If you miss a dose, take it as soon as you can. If it is almost time
for your next dose, take only that dose. There should be at least 6
hours between doses if you take theophylline twice a day, and at
least 12 hours between doses if you only take theophylline once a
day. Do not take double or extra doses.
What drug(s) may interact with
Theophylline ER ?
- beta-blockers, often used for high blood pressure or heart problems
- barbiturate medicines for inducing sleep or treating seizures
- certain antibiotics given by injection
- influenza virus vaccine
- medicines for colds and breathing difficulties
- medicine for stomach ulcers and other stomach problems
- seizure (convulsion) or epilepsy medicine
- St. John's wort
- thyroid hormones, such as levothyroxine and liothyronine
Tell your prescriber or health care professional about all other
medicines you are taking, including non-prescription medicines,
nutritional supplements, or herbal products. Also tell your
prescriber or health care professional if you are a frequent user of
drinks with caffeine or alcohol, if you smoke, or if you use illegal
drugs. These may affect the way your medicine works. Check with your
health care professional before stopping or starting any of your
What side effects may I notice from
taking Theophylline ER ?
Side effects that you should report to your prescriber or health
care professional as soon as possible:
- anxiety, nervousness, restlessness
- fainting spells, redness
- fast or irregular breathing or heartbeat (palpitations)
- flushing of the face
- nausea, vomiting (especially if the vomit looks like coffee
- seizures (convulsions)
- skin rash and itching (hives)
- unusual thirst
- unusual weakness or tiredness
Side effects that usually do not require medical attention (report
to your prescriber or health care professional if they continue or
- difficulty sleeping
- increase in the need to pass urine
- loss of appetite
- stomach cramps
What should I watch for while taking
Theophylline ER ?
Visit your prescriber or health care professional for regular checks
on your progress. Your prescriber or health care professional may
schedule regular blood tests, especially at first, to check how much
Theophylline ER is in your blood. There are many different brands of
Theophylline ER. Do not change your brand without checking with the
prescriber or health care professional. Different brands may act
differently in your body.
Do not treat yourself for coughs, colds and allergies. Some non-prescription
medicines contain ingredients that can interact with Theophylline ER.
Also check with your prescriber or health care professional if you
get diarrhea. This can mean that you are having too much
Watch your diet while you are taking Theophylline ER. Drinks with
caffeine (like coffee, tea or cola) and food containing theobromine
(like chocolate), can increase possible side effects to Theophylline
Also charcoal-broiled food can stop Theophylline ER from working
If you smoke tobacco or marijuana you may affect the level of
Theophylline ER in your body. Ask your prescriber or health care
professional for help to give up smoking.
If you are going to have surgery, tell your prescriber or health
care professional that you are taking Theophylline ER.
Where can I keep Theophylline ER ?
Keep out of the reach of children in a container that small children
Store at room temperature between 15 and 30 degrees C (59 and 86
degrees F). Keep container tightly closed. Protect from light and
moisture. Throw away any unused medicine after the expiration date.