- Is theophylline a stimulant?
- Why is theophylline not used?
- Does theophylline cause weight loss?
- Is theophylline still prescribed?
- Has theophylline been discontinued?
- Can theophylline cause junctional tachycardia?
- Which tea has most theophylline?
- What are the physicochemical properties of theophylline?
- Is there a substitute for theophylline?
- Does theophylline raise blood sugar?
- Which antibiotics increase theophylline?
- What is the therapeutic range for theophylline?
- What are the signs and symptoms of theophylline toxicity?
- What happens when you stop taking theophylline?
- What does theophylline do to the body?
- How often should theophylline levels be checked?
- What are the side effects of theophylline?
- When should you take theophylline?
- Does theophylline increase heart rate?
- How do I know if I have junctional tachycardia?
- What is the most common cause of atrial tachycardia?
Is theophylline a stimulant?
Theophylline is a drug derived from methylxanthine (a purine derivative) and has smooth muscle relaxant, bronchial dilation, diuretic, cardiac and central nervous system (CNS) stimulant activities..
Why is theophylline not used?
With that said, theophylline may cause a worsening of certain medical conditions and may need to be avoided if you have: Cardiac arrhythmia (irregular heartbeat) Epilepsy or other seizure disorders.
Does theophylline cause weight loss?
Common side effects of Theo-24 include mild nausea, loss of appetite, stomach pain, diarrhea, upset stomach, weight loss, restlessness, tremor, sleep problems (insomnia), headache, lightheadedness, dizziness, sweating, restlessness, nervousness, or irritability.
Is theophylline still prescribed?
Theophylline is still one of the most widely prescribed drugs for the treatment of asthma and chronic obstructive pulmonary disease (COPD) worldwide, because it is inexpensive and widely available.
Has theophylline been discontinued?
Reason for the Shortage Major has discontinued theophylline extended-release tablets. Teva has had theophylline extended-release tablets temporarily unavailable for several years. Theophylline 24-hour extended-release presentations are available from Mylan, Rhodes, and Endo Pharmaceuticals.
Can theophylline cause junctional tachycardia?
Cause. It can be associated with digitalis toxicity. It may also be due to onset of acute coronary syndrome, heart failure, conduction system diseases with enhanced automaticity, or administration of theophylline.
Which tea has most theophylline?
black teaTheophylline is found in black tea and to a lesser extent in green coffee, cocoa cotyledon and dried mate. Theophylline is synthesized on an industrial scale and is used principally in pharmaceutical preparations. Per-caput daily intake of theophylline from black tea in the USA has been estimated to be 0.14 mg.
What are the physicochemical properties of theophylline?
Theophylline is a dimethylxanthine having the two methyl groups located at positions 1 and 3. It is structurally similar to caffeine and is found in green and black tea. It has a role as a vasodilator agent, a bronchodilator agent, a muscle relaxant, an EC 3.1. 4.
Is there a substitute for theophylline?
Abstract: Doxofylline, which differs from theophylline in containing the dioxalane group at position 7, has comparable efficacy to theophylline in the treatment of respiratory diseases, but with an improved tolerability profile and a favorable risk-to-benefit ratio.
Does theophylline raise blood sugar?
high blood sugar –increased thirst, increased urination, dry mouth, fruity breath odor.
Which antibiotics increase theophylline?
Administration of allopurinol, oral contraceptives, cimetidine, erythromycin, quinolone antibiotics, fluvoxamine, zileuton, and zafirlukast has been shown to increase theophylline levels.
What is the therapeutic range for theophylline?
Therapeutic serum levels of theophylline are between 10 to 20 mcg/ml. Most adults achieve these concentrations with daily slow-release oral theophylline preparations, 200-400 mg (approximately 10 mg/Kg) twice a day.
What are the signs and symptoms of theophylline toxicity?
Mechanism of toxicityNervousness.Insomnia.Central respiratory stimulation.Nausea.Vomiting.Tremors.Hyperesthesia.Focal and generalized seizures that progress to status epilepticus in 25%More items…•
What happens when you stop taking theophylline?
“If you suddenly stop taking theophylline, your asthma symptoms may return, which could lead to a potentially fatal asthma attack.”
What does theophylline do to the body?
Theophylline works by opening the airways in your lungs. It does this by relaxing the muscles and decreasing the response to substances that cause your airways to constrict. This makes it easier for you to breathe.
How often should theophylline levels be checked?
Question: How often should a theophylline level be taken? Answer: In general, a level should be checked 1-2 times a year after a person is regulated. Of course, a person with variable levels should have his levels checked more often. If trouble breathing increases or side effects appear, then a level should be checked.
What are the side effects of theophylline?
Nausea/vomiting, stomach/abdominal pain, headache, trouble sleeping, diarrhea, irritability, restlessness, nervousness, shaking, or increased urination may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.
When should you take theophylline?
Take theophylline exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Take this medication with a full glass of water on an empty stomach, at least 1 hour before or 2 hours after a meal.
Does theophylline increase heart rate?
Heart rate was higher in the theophylline group than in the control group. Both pacemaker therapy and theophylline improved symptom scores after 3 months of treatment; however, a similar improvement was observed in the control group.
How do I know if I have junctional tachycardia?
More than 100 BPM is junctional tachycardia (rare dysrhythmia). If junctional tachycardia starts and stops suddenly it is paroxysmal junctional tachycardia. Junctional beats/rhythms are characterized by absent or inverted p-waves, absent or shorter than normal PR intervals, and normal/narrow QRS complexes.
What is the most common cause of atrial tachycardia?
Atrial tachycardia occurs most commonly in elderly patients and those with other types of heart disease, though it occasionally appears in children, younger people and those with healthy hearts. Causes include: A “stretched” atrium resulting from high blood pressure (hypertension) or from cardiomyopathy.