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Theophylline warnings

The respective AUC 0-inf. Ipecac syrup should be avoided in theophylline overdoses. Theophylline clearance is decreased by 50% or more in patients with CHF.

P-450 1A2 or a closely related cytochrome

The Effect of Other Drugs on Theophylline Serum Concentration Measurements: Most serum theophylline assays in clinical use are immunoassays which are specific for theophylline. Other xanthines such as caffeine, dyphylline, and pentoxifylline are not detected by these assays. Sessler CN "Theophylline toxicity: clinical features of 116 consecutive cases. Theophylline. The clinical importance of these changes should be weighed against the potential therapeutic benefit of Theophylline in individual patients. Recheck serum concentration after three days for further dosage adjustment. Amitai Y, Yeung AC, Moye J, Lovejoy FH Jr. Repetitive oral activated charcoal and control of emesis in severe theophylline toxicity. daflon buy now shop usa

Theophylline adult dosage

Fever: Fever, regardless of its underlying cause, can decrease the clearance of Theophylline. The magnitude and duration of the fever appear to be directly correlated to the degree of decrease of Theophylline clearance. Barbiturates: May decrease the serum concentration of Theophylline Derivatives. Zafirlukast: Theophylline Derivatives may decrease the serum concentration of Zafirlukast. Zafirlukast may increase the serum concentration of Theophylline Derivatives. vivitrol

Theophylline ingredients

Treatment of Cardiac Arrhythmias. THEOLAIR theophylline tablets Tablets are contraindicated in patients with a history of hypersensitivity to theophylline or any other components in these products. The dose of theophylline must be individualized on the basis of peak serum theophylline concentration measurements in order to achieve a dose that will provide maximum potential benefit with minimal risk of adverse effects.



What conditions does theophylline treat

Adenosine: Theophylline Derivatives may diminish the therapeutic effect of Adenosine. Patients should be instructed not to continue any dosage that causes adverse effects and to withhold subsequent doses until the symptoms have resolved, at which time the healthcare professional may instruct the patient to resume the drug at a lower dosage see Dosing Guidelines, Table VI. The dose of your medicine may need to be adjusted. Injectables. Some doctors inject chemicals into the fat layer below the skin to encourage breakdown and make cellulite less noticeable. This procedure is often called mesotherapy. The chemicals used include phosphatidylcholine, aminophylline, hormones, herbal extracts, vitamins, and minerals. Theophylline may also be used for purposes not listed in this medication guide. Hold each position for 5 minutes to help the mucus drain from your lungs. Theophylline toxicity: If a patient develops signs and symptoms of theophylline toxicity eg, persistent, repetitive vomiting a serum level should be measured and subsequent doses held. Who should not take ZYFLO? Always consult a healthcare professional for medical advice. The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables. Infants 1 to 3 months: Consider dose reduction and frequent monitoring of serum theophylline concentrations. Iomeprol. Specifically, the risk for seizures may be increased. Management: Discontinue agents that may lower the seizure threshold 48 hours prior to intrathecal use of iomeprol. Wait at least 24 hours after the procedure to resume such agents. In nonelective procedures, consider use of prophylactic anticonvulsants. Riociguat: Theophylline Derivatives may enhance the hypotensive effect of Riociguat. Note: Doses should be adjusted to maintain the peak steady state serum concentrations. The time to reach steady state will vary based on age and the presence of risk factors which may affect theophylline clearance. Alcohol Ethyl: May increase the serum concentration of Theophylline. Do not stop taking any medications without consulting your healthcare provider.



How should I take ZYFLO?

Pharmaceuticals, Northridge, CA 91324. MAY 1998. Note: Serum Theophylline concentrations may continue to increase after presentation of the patient for medical care. Cyclosporine: Elevated serum levels of cyclosporine have been reported with concomitant use of cyclosporine with other members of the quinolone class. Label "shake well". Stable for 90 days at room temperature. The dose of theophylline must be individualized on the basis of peak serum theophylline concentration measurements in order to achieve a dose that will provide maximum potential benefit with minimal risk to adverse effects. Larger diazepam doses may be required to produce desired level of sedation. Caffeine concentrations are usually undetectable in adults regardless of renal function. In neonates, caffeine may accumulate to concentrations that approximate the unmetabolized theophylline concentration and thus, exert a pharmacologic effect. Theophylline required to achieve a therapeutic serum Theophylline concentration will be larger. Discontinuation of a concomitant drug that increases Theophylline clearance will result in accumulation of Theophylline to potentially toxic levels, unless the Theophylline dose is appropriately reduced. Discontinuation of a concomitant drug that inhibits Theophylline clearance will result in decreased serum Theophylline concentrations, unless the Theophylline dose is appropriately increased. Aminophylline is very similar to theophylline. Do not take containing theophylline while using aminophylline. reminyl



What other drugs will affect theophylline

RxList is part of the WebMD Health Network. The opinions expressed in the WebMD User Reviews are solely those of the User, who may or may not have medical or scientific training, and do not represent the opinions of WebMD. These member reviews have not been reviewed by a WebMD physician or any member of the WebMD editorial staff for accuracy, balance, objectivity, or any other purpose except for compliance with our Terms and Conditions. This list is not complete and many other drugs can interact with theophylline. This includes prescription, over-the-counter, vitamin, and herbal products. Keep a list of all your medicines and show it to any healthcare provider who treats you. Higher doses of theophylline may be required to achieve desired effect. This medication must be used regularly to be effective. It does not work right away and should not be used to relieve sudden breathing problems. If sudden shortness of breath occurs, use your quick-relief as prescribed. Fed conditions were the same as those previously cited. If side effects still bother you and you wonder if you should keep taking the medicine, call your doctor. He or she may be able to lower your dose or change your medicine. Some theophylline side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. can i buy evista evista



Theophylline drug interactions

The following in vitro data are available but their clinical significance is unknown. Theophylline only rarely alters the pharmacokinetics of other drugs. If theophylline has been administered in the previous 24 hours: A loading dose is not recommended without obtaining a serum theophylline concentration. Increased frequency of nausea, nervousness, and insomnia. Methotrexate: May increase the serum concentration of Theophylline Derivatives. Sometimes it is not safe to use certain drugs at the same time. Some medicines can affect how theophylline works, which could make it less effective or cause side effects. Theophylline could also affect how other medicines work, making them less effective or causing side effects. Sucralfate and antacids: Quinolones form chelates with metal cations. Cross-resistance with other quinolones has been demonstrated. Patient may experience agitation, diarrhea, tablet shell in stool, or polyuria. Have patient report immediately to prescriber nausea, vomiting, tachycardia, arrhythmia, severe dizziness, passing out, severe anxiety, severe headache, confusion, insomnia, seizures, behavioral changes, irritability, or muscle spasm HCAHPS.



Reviews for theophylline

Take this by as directed by your doctor, usually once or twice daily. Since different manufacturers have different ways to take this medication, ask your doctor or about the best times to take your brand of theophylline and if you should take the drug with or without food. Theophylline concentrations should be monitored at 6 month intervals for rapidly growing children and at yearly intervals for all others. Take this by with or without food, usually 2 to 4 times daily or as directed by your doctor. Phenobarbital may cause respiratory depression, particularly in elderly patients and patients with COPD. Estrogen Derivatives: May increase the serum concentration of Theophylline Derivatives. Alcohol Ethyl: May increase the serum concentration of Aminophylline. Stamford, CT 06901-3431. March 17, 2004. Theophylline clearance. The most common causes of chronic Theophylline overdosage include patient or care giver error in dosing, healthcare professional prescribing of an excessive dose or a normal dose in the presence of factors known to decrease the rate of Theophylline clearance, and increasing the dose in response to an exacerbation of symptoms without first measuring the serum Theophylline concentration to determine whether a dose increase is safe. In patients with chronic asthma, including patients with severe asthma requiring inhaled corticosteroids or alternate-day oral corticosteroids, many clinical studies have shown that theophylline decreases the frequency and severity of symptoms, including nocturnal exacerbations, and decreases the "as needed" use of inhaled beta 2 agonists. Theophylline has also been shown to reduce the need for short courses of daily oral prednisone to relieve exacerbations of airway obstruction that are unresponsive to bronchodilators in asthmatics. If any of these effects last or get worse, tell your doctor or promptly. where can i buy phenazopyridine online phenazopyridine



Theophylline dosing information

Thus, blood samples taken 4 to 8 hours post-dosing should reference the peak serum level for most patients. Increased risk of ventricular arrhythmias. Lower initial doses may be required in patients with reduced theophylline clearance. Dosage should be adjusted according to serum level measurements during the first 12- to 24-hour period. Hepatic impairment: Use with caution in patients with hepatic impairment eg, cirrhosis, acute hepatitis, cholestasis; risk of severe and potentially fatal theophylline toxicity is increased. Overdose symptoms may include severe forms of some of the side effects listed in this medication guide. What should I avoid while taking theophylline? For various North American patient populations from literature reports. Different rates of elimination and consequent dosage requirements have been observed among other peoples. Dosage adjustment based on serum theophylline concentrations: Note: Recheck serum theophylline concentration 12 hours after dosage adjustment. Theophylline concentration when afebrile may be at greater risk of toxic effects from decreased clearance during sustained fever. Decreases theophylline clearance and pharmacologic interaction. How often did hospital staff describe possible side effects in a way you could understand? P-450 1A2 and 3A3 activity. Thiopental: Aminophylline may diminish the therapeutic effect of Thiopental. Both the N-demethylation and hydroxylation pathways of Theophylline biotransformation are capacity-limited. General Monitoring Procedures Electrocardiographic monitoring should be initiated on presentation and continued until the serum theophylline level has returned to a non-toxic level. Serum electrolytes and glucose should be measured on presentation and at appropriate intervals indicated by clinical circumstances. Fluid and electrolyte abnormalities should be promptly corrected. cheap gabapentin purchase online



What are the possible side effects of theophylline

There are several readily identifiable causes of reduced theophylline clearance. Thyroid Products: May increase the metabolism of Theophylline Derivatives. Theophylline clearance are continued. Phenobarbital may cause respiratory depression, particularly in elderly patients and patients with COPD. Dosing Guidelines, Table VI. Get medical help right away if your worsen or if you are using your quick-relief more than usual or more often than prescribed. Erythromycin metabolite decreases theophylline clearance by inhibiting cytochrome P450 3A3. Digoxin: Enoxacin may raise serum digoxin levels in some individuals. If signs and symptoms suggestive of digoxin occur when enoxacin and digoxin are given concomitantly, physicians are advised to obtain serum digoxin levels and adjust digoxin doses appropriately.



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Anticipate Need for Anticonvulsants


How to use theophylline

What should I avoid while taking Theo-Dur theophylline? Seizure disorder: Use with caution in patients with a history of seizure disorder; use may exacerbate this condition. Increases in the dose of theophylline should not be made in response to an acute exacerbation of symptoms of chronic lung disease since theophylline provides little added benefit to inhaled beta 2-selective agonists and systemically administered corticosteroids in this circumstance and increases the risk of adverse effects. A peak steady-state serum theophylline concentration should be measured before increasing the dose in response to persistent chronic symptoms to ascertain whether an increase in dose is safe. abbo.info epogen

Side effects of theophylline

Phenytoin: May decrease the serum concentration of Theophylline Derivatives. Theophylline Derivatives may decrease the serum concentration of Phenytoin. Management: Seek alternatives when possible. If you miss a dose, skip the missed dose and resume your usual dosing schedule. For various North American patient populations from literature reports. Different rates of elimination and consequent dosage requirements have been observed among other peoples. Clearance represents the volume of blood completely cleared of theophylline by the liver in one minute. Hall RC, Beresford TP, Stickney SK, et al "Psychiatric reactions produced by respiratory drugs.

About theophylline

Aderka D, Shavit G, Garfinkel D, et al "Life-threatening theophylline intoxication in a hypothyroid patient. Miscellaneous: Other factors associated with decreased Theophylline clearance include the third trimester of pregnancy, sepsis with multiple organ failure, and hypothyroidism. Careful attention to dose reduction and frequent monitoring of serum Theophylline concentrations are required in patients with any of these conditions see . Other factors associated with increased Theophylline clearance include hyperthyroidism and cystic fibrosis. What should I discuss with my healthcare provider before taking theophylline? zanaflex in uk

III are current as of February 9, 1995

Mohsenifar Z, Lehrman S, Carson SA, Tashkin D "Two cases of allergy to aminophylline. Bahls FH, Ma KK, Bird TD "Theophylline-associated seizures with "therapeutic" or low toxic serum concentrations: risk factors for serious outcome in adults. In selected patients at high risk for Theophylline-induced seizures, consideration should be given to the administration of prophylactic anticonvulsant therapy. amitriptyline

Tell your doctor if you are following a dietary plan or eat beef every day. The dose of your medicine may need to be adjusted. There was a minimal, dose-related, statistically significant increase in micronuclei at high doses in mice. The significance of these findings, in the absence of effects in other test systems, is not established. What should I avoid while talking ZYFLO? In studies in which pregnant mice, rats and rabbits were dosed during the period of organogenesis, theophylline produced teratogenic effects. The pharmacokinetics of theophylline vary widely among similar patients and cannot be predicted by age, sex, body weight or other demographic characteristics. In addition, certain concurrent illnesses and alterations in normal physiology see and co-administration of other drugs see can significantly alter the pharmacokinetic characteristics of theophylline. Within-subject variability in metabolism has also been reported in some studies, especially in acutely ill patients. purchase motrin tabletas

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