Theophylline for Asthma: Dosage, Risks, and Precautions

Overview:

Theophylline anhydrous is an asthmatic drug. On April 12, 1979, the United States Food and Drug Administration accepted this drug. It extended marketing accreditation for Theophylline anhydrous in asthma patients. The drug also relieves troubles that interfere with your breathing. If you have any respiratory illness, it will manage the symptoms too. Theophylline can be given alone and also can be given with other medications.

Drug Group:

The drug group of Theophylline anhydrous is methylxanthine.

Available Doses and Dosage Forms:

1. Dosage Forms: Your doctor will give this drug tablet orally or injection intravenously.

2. Available Doses: 600 and 400 milligrams for pills.

For Patients:

How Is Theophylline Anhydrous Used for Asthma?

If you are suffering from asthma, your breathing channels will shrink. You may have trouble breathing. You may have other symptoms, like chest tightness and shortness of breath.

Theophylline anhydrous is a drug that dilates your constricted breathing channels. On dilating, the relaxation of air channels will occur. Ultimately, you will have more accommodation for air. Your doctor will give this drug orally or intravenously to relieve asthma.

How Does Theophylline Anhydrous Work?

Your breathing tract will be constricted during an asthma attack. Theophylline anhydrous, being a potent bronchodilator, removes this constriction by a bronchodilation process. The process in which your breathing tracts or channels get dilated. When you take Theophylline, it will send signals to your muscles to wind down. Your muscles get relaxed, and you will get more air to breathe. This is how Theophylline anhydrous works to tackle asthmatic manifestations.

What Is the Dosage of Theophylline Anhydrous?

400 to 600 milligrams (mg) is the proposed daily dose of theophylline. Before prescribing Theophylline, your doctor should check your Theophylline tolerance level, whether it is required for you or not, and the severity of your asthma attack. You should take a dose as prescribed by your doctor. You should take an extra dose. It will cause complications.

How Effective Is Theophylline Anhydrous?

The effect of Theophylline anhydrous is not the same for all. It’s different for everyone. The effectiveness is based on many factors, including your reaction to the drug, your medical condition, and the severity of that medical condition. The drug is mainly used to treat respiratory diseases. It can be asthma and chronic obstructive pulmonary disease (COPD—disorders that impede breathing). Each drug has positive and negative effects. Researchers invented several new medicines that are better than Theophylline and secured their positions as first-line interventions. However, Theophylline is still prescribed to cure asthma.

What Are the Things to Inform the Doctor About Before Taking the Drug?

The following are things that you should inform your doctor about before taking the drug.

• Allergy History: If you are allergic to Theophylline, you should tell your doctor about it.

• Drug Allergy: Any other medicines or pills that prompted exaggerated reactivity or abnormalities.

• Medical History: You should provide proper medical history to your doctor, including your health, any previous medical conditions you have suffered from, or any past surgeries.

• Drug History: Comprehension of all the medicinal therapy one is undergoing, embracing dietary supplements, plant-based medicines, and others.

• Pregnancy: You should determine their pregnancy status in advance for Theophylline therapy.

• Lactation: You should inform your doctor about your nursing status before taking Theophylline.

• Smoking Habit: Smoking or tobacco can negatively affect or reduce the effect of Theophylline. So, in advance, your doctor should be informed about it.

How Is Theophylline Anhydrous Administered?

Since there are different Theophylline drug forms, the administration procedures do vary. There are diverse pharmacological formulations in which Theophylline is being marketed. Theophylline in oral suspension and pill formulations is devoted to oral delivery. Concerning intravenous formulations, the drug dispensation has to be through a vein. Intravenously delivered Theophylline directly strikes the circulation and facilitates its dissemination.

Ensuring uniformity concerning Theophylline delivery time and its co-ingestion with edibles or food throughout the course is a high priority. You can choose whether to have Theophylline alongside food or not. But, whatever you choose, like whether to take it with food or not, you should stick to that only until your course is completed. If you are taking Theophylline on an empty stomach (preferred mode of Theophylline intake), then you have to take that drug with six to eight ounces of water (200 to 250 milliliters).

What Are the Side Effects of Theophylline Anhydrous?

Theophylline anhydrous can lead to certain side effects. Some of the frequently encountered side effects concerning Theophylline therapy include:

• Trouble sleeping.

• Headache.

• Not feeling hungry.

• Indigestion.

• Stomach discomfort.

• Diarrhea.

• Uneasiness.

• Impatience.

Heart racing, destabilized heart rate, awful vomiting, seizure (anomalous brain activity), labored breathing, and extensive skin reactions are considered Theophylline’s grave responses, which necessitate a speedy intervention.

Dietary Considerations:

You should not take chocolate-related drinks and coffee with Theophylline anhydrous. It will cause complications.

Missed Dose:

Missed doses should not be taken. Only the next dose is taken. When the missed dose comes to your mind, it is time for your next dose. So, you can take only the next dose.

Overdose:

If you take an excessive dose, it will affect your body. Ingesting the slow-release Theophylline pill in the wrong way, by powdering it, can also cause overdose even if the ingested pill is of the prescribed dose.

Storage:

Theophylline anhydrous pills are retailed in PET bottles and strip packets. 68 to 77 degrees Fahrenheit (20 to 25 degrees Celsius) is gauged to be the optimal temperature range under which Theophylline pills can be stored. Parents should keep the drugs at a height so that their child cannot reach them.

For Doctors:

Indications:

• Asthma.

• Chronic obstructive pulmonary disease.

Dose:

The dose is within the 300 to 600 mg range. Theophylline can be taken as a single dose or a double dose. For slow-release Theophylline pills, you can take a single dose of Theophylline daily. On the contrary, with the rapid-release Theophylline pill, you should divide that single dose and take that half pill twice a day.

The dose effectiveness is not the same for everyone. The results are different for all people. Your doctor may advise a blood test to check for Theophylline in your blood. After checking the amount of Theophylline, your doctor will adjust the dose of the drug. Your doctor will increase or decrease the dose of Theophylline.

Dosing Considerations:

Theophylline dosing considerations are advocated for beings with

• Undermined Theophylline clearance.

• Serum Theophylline concentration tracking is impractical.

A different dosing strategy should be adhered to in each of the above scenarios:

• 12 to 15 Years of Age: 16 milligrams per kilogram of body weight per day (mg/kg/day), capped at 400 mg daily.

• 16 Years and Above: Not surpassing 400 mg per day.

What Are the Pharmacological Aspects of Theophylline Anhydrous?

1. Mechanism of Action: If you have asthma, taking Theophylline anhydrous elicits its therapeutic outcome through non-bronchodilator prophylactic effects and bronchodilatation. The non-bronchodilator prophylactic effect is the removal of the respiratory tract triggers. Certain triggers can cause reversible airway impediments by triggering reactions in the airway tract. Theophylline anhydrous clamps down on those reactions and curtails the body’s response. Theophylline molecules hinder and hold back the adenosine receptor and phosphodiesterase enzyme functions.

2. Pharmacodynamics: Apart from theophylline’s actions on adenosine receptors and phosphodiesterase enzymes, it also increases the serum calcium concentration. Calcium inflation is attained by facilitating calcium dispensation. Theophylline could also trigger the breathing centers and intensify ventilation.

3. Pharmacokinetics: After Theophylline’s ingestion, your gut will take this drug. Gut uptake follows first-order kinetics. Theophylline’s ingested dose and utmost concentration reflected a direct correlation. Theophylline’s distribution and dissemination are executed through its alliance with plasma proteins—liver cytochrome enzymes, mainly the cytochrome P450 enzyme system, which processes Theophylline anhydrous molecules. The expulsion of Theophylline, either in its original structure or as fragmented products, comes through urine.

Toxicity: If you take this drug in large amounts, it can cause toxicity. You may have vomiting, stomach pain, lung injury, decreased blood pressure, seizures, and restlessness.

Clinical Studies:

Several clinical studies showed opposing and clashing results. Certain controlled trials with Theophylline elicited no specific therapeutic benefit. Instead, incorporating theophylline heightened the side effect profile encountered in such patients. A few other studies have underscored the benefits of augmented asthma recovery with Theophylline.

What Are the Contraindications of Theophylline Anhydrous?

Theophylline anhydrous should not be advocated for the following cases:

• Theophylline allergy.

• Reported exaggerated reactivity with constituents in the theophylline pills or infusion formulation.

Warnings and Precautions:

• Underlying Disease Exacerbation: If you are suffering from more than one medical condition, tell your doctor before taking Theophylline. Otherwise, you can come up with complications like Seizures, peptic ulcers, epilepsy, and arrhythmias.

These medical conditions will slow down the process of the Theophylline drug and also its clearance. Ultimately, it may lead to Theophylline toxicity. Acute hepatitis, congestive heart failure, cor pulmonale, hypothyroidism, and acute pulmonary edema underscore the need for vigilance.

• Neonates and Elderly Usage: Theophylline therapy in seniors (beyond 65 years) and babies (under one year) requires close tracking of Theophylline clearance. Due to their compromised clearance potential, these categories are exposed to theophylline toxicity encounters.

• Concurrent Drug Therapy: Drugs that can attenuate Theophylline processing, when advocated in unison with Theophylline therapy, expose one to Theophylline overdose.

• Theophylline Dose Revisions: No abrupt Theophylline dose inflation is advocated through the therapy if asthmatic worsening is precipitated during the course. No dose inflation can be achieved if the serum concentration exceeds 10 micrograms per milliliter (mcg per ml).

• Tracking Theophylline’s Serum Concentration: Theophylline serum concentration tracking is imperative to expose the appropriateness of the ongoing dosing.

What Are the Drug Interactions of Theophylline Anhydrous?

Theophylline anhydrous elicits interactions with a broad range of other medicines. Some of the notable flagged Theophylline drug associations encompass the following:

• Medications like Erythromycin, Ciprofloxacin, Enoxacin, Fluvoxamine, Tacrine, or Cimetidine, when advocated in conjunction with Theophylline anhydrous, can set back Theophylline’s processing. It can eventually reinforce the potential for theophylline toxicity and heighten the vulnerability.

• Theophylline’s breakdown and processing are amplified and encouraged by Rifampin, Aminoglutethimide, Phenobarbital, and Carbamazepine. Thus, brings down Theophylline’s potency.

• Theophylline depletes Adenosine and Diazepam’s potency by masking adenosine receptors.

Specific Considerations:

1. Theophylline Anhydrous in Expectant Women: Animal studies concerning Theophylline brought its teratogenicity to light. If you are pregnant and taking Theophylline, it will harm your fetus. Both prospects must be scrutinized before advocating Theophylline to a conceiving lady.

2. Theophylline Anhydrous in Nursing Women: A notable proportion of Theophylline is reflected in a lactating woman’s breast milk after ingesting theophylline. Babies nursed by those undergoing Theophylline therapy are liable to Theophylline toxicity. Serum and breast milk Theophylline proportions were estimated to be analogous.

3. Theophylline Anhydrous in Kids: The drug can be given to kids. But only the dose is to be kept in mind. But the only drawback is its clearance. Negative clearance can cause toxicity.

4. Theophylline Anhydrous in Geriatric Patients: Aging triggers oddities in how theophylline anhydrous is processed. The drug may also affect your grandchildren. Theophylline clearance. Notable adverse effects will be precipitated in geriatric patients through Theophylline therapy.

Key Takeaway/ Note from iCliniq:

For asthma, Theophylline anhydrous is a good drug. But if you miss your dose or take an excessive dose, it can cause unexpected things. If you are suffering from asthma, you can contact our specialist doctor at icliniq.com. They will guide you on how to take this drug. This drug will dilate your tightened air channels.