Theophylline 23MG+ ETOPHYLLIN 77MG Side effects

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Consists of Etophylline, Theophylline

Side effects of Etophylline (Theophylline 23MG+ ETOPHYLLIN 77MG) in details

A side effect of any drug can be defined as the unwanted or undesired effect produced by the drug. The side effect can be major or in few medications minor that can be ignored. Side effects not only vary from drug to drug, but it also depends on the dose of the drug, the individual sensitivity of the person, brand or company which manufactures it. If side effects overweigh the actual effect of the medicine, it may be difficult to convince the patient to take the drug. Few patients get specific side effects to specific drugs; in that case, a doctor replaces the drug with another. If you feel any side effect and it troubles you, do not forget to share with your healthcare practitioner.
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Vomiting, Nausea, Restlessness, Nervousness, Frequent urge to urinate, Allergic reaction, Flushing, Diarrhoea, Abdominal pain, Headache, Insomnia, Irritation, Loss of appetite, Tremor

What are the possible side effects of Theophylline (Theophylline 23MG+ ETOPHYLLIN 77MG)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using theophylline and call your doctor at once if you have a serious side effect such as:

Less serious side effects may include:

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Side effects of Theophylline (Theophylline 23MG+ ETOPHYLLIN 77MG) in details

A side effect of any drug can be defined as the unwanted or undesired effect produced by the drug. The side effect can be major or in few medications minor that can be ignored. Side effects not only vary from drug to drug, but it also depends on the dose of the drug, the individual sensitivity of the person, brand or company which manufactures it. If side effects overweigh the actual effect of the medicine, it may be difficult to convince the patient to take the drug. Few patients get specific side effects to specific drugs; in that case, a doctor replaces the drug with another. If you feel any side effect and it troubles you, do not forget to share with your healthcare practitioner.
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Adverse reactions associated with theophylline are generally mild when peak serum theophylline concentrations are < 20 mcg/ mL and mainly consist of transient caffeine-like adverse effects such as nausea, vomiting, headache, and insomnia. When peak serum theophylline concentrations exceed 20 mcg/mL, however, theophylline produces a wide range of adverse reactions including persistent vomiting, cardiac arrhythmias, and intractable seizures which can be lethal. The transient caffeine-like adverse reactions occur in about 50%of patients when theophylline therapy is initiated at doses higher than recommended initial doses (e.g., > 300 mg/day in adults and > 12 mg/kg/day in children beyond 1 year of age). During the initiation of theophylline therapy, caffeine-like adverse effects may transiently alter patient behavior, especially in school age children, but this response rarely persists. Initiation of theophylline therapy at a low dose with subsequent slow titration to a predetermined age-related maximum dose will significantly reduce the frequency of these transient adverse effects. In a small percentage of patients ( < 3%of children and < 10%of adults)the caffeine-like adverse effects persist during maintenance therapy, even at peak serum theophylline concentrations within the therapeutic range (i.e., 10-20 mcg/mL). Dosage reduction may alleviate the caffeine-like adverse effects in these patients, however, persistent adverse effects should result in a reevaluation of the need for continued theophylline therapy and the potential therapeutic benefit of alternative treatment.

Other adverse reactions that have been reported at serum theophylline concentrations < 20 mcg/mL include diarrhea, irritability, restlessness, fine skeletal muscle tremors, and transient diuresis. In patients with hypoxia secondary to COPD, multifocal atrial tachycardia and flutter have been reported at serum theophylline concentrations ≥ 15 mcg/mL. There have been a few isolated reports of seizures at serum theophylline concentrations < 20 mcg/mL in patients with an underlying neurological disease or in elderly patients. The occurrence of seizures in elderly patients with serum theophylline concentrations < 20 mcg/mL may be secondary to decreased protein binding resulting in a larger proportion of the total serum theophylline concentration in the pharmacologically active unbound form. The clinical characteristics of the seizures reported in patients with serum theophylline concentrations < 20 mcg/mL have generally been milder than seizures associated with excessive serum theophylline concentrations resulting from an overdose (i.e., they have generally been transient, often stopped without anticonvulsant therapy, and did not result in neurological residua).

Table IV. Manifestations of theophylline toxicity.*

Percentage of Patients Reported With Sign or Symptom
Acute Overdose

(Large Single Ingestion)

Chronic Overdosage

(Multiple Excessive Doses)

Sign/Symptom Study 1

(n=157)

Study 2

(n=14)

Study 1

(n=92)

Study 2

(n=102)

Asymptomatic NR** 0 NR** 6
Gastrointestinal
Vomiting 73 93 30 61
Abdominal Pain NR** 21 NR** 12
Diarrhea NR** 0 NR** 14
Hematemesis NR** 0 NR** 2
Metabolic/Other
Hypokalemia 85 79 44 43
Hyperglycemia 98 NR** 18 NR**
Acid/base disturbance 34 21 9 5
Rhabdomyolysis NR** 7 NR** 0
Cardiovascular
Sinus tachycardia 100 86 100 62
Other supraventricular tachycardias 2 21 12 14
Ventricular premature beats 3 21 10 19
Atrial fibrillation or flutter 1 NR** 12 NR**
Multifocal atrial tachycardia 0 NR** 2 NR**
Ventricular arrhythmias with hemodynamic instability 7 14 40 0
Hypotension/shock NR** 21 NR** 8
Neurologic
Nervousness NR** 64 NR** 21
Tremors 38 29 16 14
Disorientation NR** 7 NR** 11
Seizures 5 14 14 5
Death 3 21 10 4
* These data are derived from two studies in patients with serum theophylline concentrations > 30 mcg/mL. In the first study (Study #1 –Shanon, Ann Intern Med 1993; 119: 1161-67), data were prospectively collected from 249 consecutive cases of theophylline toxicity referred to a regional poison center for consultation. In the second study (Study #2 –Sessler, Am J Med 1990; 88: 567-76), data were retrospectively collected from 116 cases with serum theophylline concentrations > 30 mcg/mL among 6000 blood samples obtained for measurement of serum theophylline concentrations in three emergency departments. Differences in the incidence of manifestations of theophylline toxicity between the two studies may reflect sample selection as a result of study design (e.g., in Study #1, 48%of the patients had acute intoxications versus only 10% in Study #2) and different methods of reporting results.

** NR =Not reported in a comparable manner.

What is the most important information I should know about Theophylline (Theophylline 23MG+ ETOPHYLLIN 77MG)?

Theophylline (Theophylline 23MG+ ETOPHYLLIN 77MG) contraindications

Contraindication can be described as a special circumstance or a disease or a condition wherein you are not supposed to use the drug or undergo particular treatment as it can harm the patient; at times, it can be dangerous and life threatening as well. When a procedure should not be combined with other procedure or when a medicine cannot be taken with another medicine, it is called Relative contraindication. Contraindications should be taken seriously as they are based on the relative clinical experience of health care providers or from proven research findings.
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Do not take theophylline in larger or smaller amounts or for longer than recommended. Theophylline overdose can occur if you accidentally take too much at one time, or if your daily doses are too high. To be sure you are using the correct dose, your blood will need to be tested often.

Do not start or stop smoking without first talking to your doctor. Smoking changes the way your body uses theophylline, and you may need to use a different dose.

Sometimes it is not safe to use certain drugs at the same time. Many drugs can interact with theophylline. Tell your doctor about all other medicines you use. Also tell your doctor if you start or stop using any of your other medications.

Stop using theophylline and call your doctor at once if you have severe or continued vomiting, rapid heartbeats, confusion, tremors, or seizure.

References

  1. DailyMed. "THEOPHYLLINE: DailyMed provides trustworthy information about marketed drugs in the United States. DailyMed is the official provider of FDA label information (package inserts).". https://dailymed.nlm.nih.gov/dailyme... (accessed September 17, 2018).
  2. DTP/NCI. "theophylline: The NCI Development Therapeutics Program (DTP) provides services and resources to the academic and private-sector research communities worldwide to facilitate the discovery and development of new cancer therapeutic agents.". https://dtp.cancer.gov/dtpstandard/s... (accessed September 17, 2018).
  3. European Chemicals Agency - ECHA. "Aminophylinne Hydrate: The information provided here is aggregated from the "Notified classification and labelling" from ECHA's C&L Inventory. ". https://echa.europa.eu/information-o... (accessed September 17, 2018).

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