Basic Theophylline Information

• INN (International Nonproprietary Name): not specified
• Brand Names Available In United Kingdom: not specified
• ATC Code: not specified
• Forms & Dosages: Tablets; Syrup/Solution; Suppositories; Topical; Injectable/Vials (strengths not specified)
• Manufacturers In United Kingdom: Pfizer; Johnson & Johnson; GSK; Sanofi; Bayer; Novartis; AstraZeneca
• Registration Status In United Kingdom: not specified
• OTC / Rx Classification: Prescription (Rx) / status depends on formulation and indication; not specified for this template

Initial Instructions, Warnings And Daily-Life Integration

Theophylline Is A Prescription-Only Bronchodilator With A Narrow Therapeutic Index.

Do Not Stop Or Change The Dose Without Speaking To Your GP Or Respiratory Specialist.

If You Experience Palpitations, Severe Nausea, Vomiting, Tremor, Confusion Or Seizures Seek Emergency Care Immediately.

Report Suspected Side Effects Via The MHRA Yellow Card Scheme.

Take Prolonged-Release Formulations Whole; Do Not Crush, Split Or Chew Them.

Keep A Consistent Routine And Take Doses At The Same Time Each Day To Maintain Steadiest Blood Levels.

Carry A Note Or Card Saying You Are On Theophylline Because Many Drugs And Lifestyle Changes, Such As Smoking Cessation, Alter Levels.

Ask Your Community Pharmacy (Boots, LloydsPharmacy, Superdrug Or NHS Pharmacy) For A Patient Information Leaflet And A Reminder Card For Blood Tests.

Use NHS 111 Or Your GP Surgery For Dose Queries And Clarification.

In England, NHS Prescription Charges May Apply (Standard Item Charge Applies Unless You Are Exempt); Scotland, Wales And Northern Ireland Often Have Different Arrangements — Confirm Locally.

• Checklist — Warning Signs: palpitations; severe nausea/vomiting; shaking or uncontrollable tremor; confusion or altered behaviour; fainting; seizures.

Everyday Use & Best Practices

Morning Vs Evening Dosing

Which Time Should I Take It Is A Common Question From Patients With Asthma Or COPD.

For Many People, Morning Dosing Is Preferred To Reduce Sleep-Disturbing Side Effects Such As Insomnia And Tremor.

If Your Prescriber Has Recommended Twice-Daily Dosing Aim For Roughly Twelve-Hour Spacing To Keep Levels Steady.

Always Stick To The Exact Timing Advised By Your Prescriber Or Respiratory Team.

Taking With Or Without Meals

Take Prolonged-Release Tablets With Water And Swallow Whole.

Many Prolonged-Release Products Can Be Taken With Or Without Food But High-Fat Meals May Alter Absorption For Some Brands.

Do Not Crush, Split Or Chew PR Tablets Because This Can Release Too Much Drug At Once And Cause Toxicity.

Set Phone Alarms For Dosing And Blood-Test Appointments To Stay On Track.

• Dos: take PR tablets whole; keep consistent timing; carry medication and blood-test notes.
• Don'ts: do not crush or chew PR tablets; do not change dose without prescriber review; do not ignore scheduled blood tests.

One-Day Dosing Checklist: morning dose with water, note time, check alarm for evening dose (if prescribed twice daily), and confirm next blood-test appointment.

Safety Priorities

Who Should Avoid It (MHRA Warnings)

Theophylline Is Unsuitable For Patients With Known Hypersensitivity To Xanthines.

People With Severe Uncontrolled Cardiac Arrhythmias Should Avoid Theophylline Unless Under Specialist Supervision.

Severe Hepatic Impairment Often Requires Specialist Review Because Clearance May Be Reduced.

Patients With Seizure Disorders Need Careful Assessment As Theophylline Can Lower Seizure Threshold.

Pregnant Or Breastfeeding Women Should Only Use Theophylline If The Benefits Outweigh The Risks And Under Specialist Guidance.

The MHRA Advises Close Monitoring In Older Patients And In Those On Interacting Medicines.

Activities To Limit (Driving, Work Safety)

Theophylline Can Cause Tremor, Anxiety, Dizziness And Palpitations.

Avoid Driving Or Operating Heavy Machinery Until You Know How The Medicine Affects You.

If You Work Shifts Or Night Hours Discuss Timing With Your Prescriber Since Night-Time Dosing May Worsen Insomnia.

Alcohol Does Not Greatly Change Theophylline Levels Pharmacokinetically But Can Increase Side Effects, So Consume Cautiously.

• Contraindications Checklist: allergy to xanthines; severe cardiac arrhythmia; uncontrolled seizures; significant liver impairment unless reviewed.

Dosage & Adjustments

General Regimen (NHS Guidance)

Theophylline Dosing Is Individualised And Frequently Uses Slow-Release Formulations When Possible.

NHS Practice Is To Titrate To Clinical Response While Monitoring Plasma Concentrations.

A Typical Therapeutic Range Aimed For Is Roughly 10 To 20 Mg/L (10–20 µg/Ml), Though The Target Depends On Indication And Symptoms.

Blood Levels Should Be Checked At Steady State After Initiation Or Dose Change And Periodically Thereafter.

Special Cases (Elderly, Comorbidities)

Elderly Patients Often Have Reduced Clearance So Start Low And Titrate Slowly With More Frequent Monitoring.

Hepatic Impairment Requires Dose Reduction And Increased Monitoring Frequency Because Clearance Falls.

Smokers And People With Cystic Fibrosis Often Have Increased Clearance And May Need Higher Doses.

Remember That Stopping Or Starting Smoking Can Rapidly Alter Clearance And Risk Toxicity Or Loss Of Effect, So Plan Tests Around Cessation.

• Dose-Adjustment Triggers: symptoms of toxicity; interacting new medication; smoking cessation or initiation; major weight change; altered liver function.

User Testimonials

Positive Reports From UK Patients

Many UK Patients With COPD Or Difficult-To-Control Asthma Report Improved Breathing And Fewer Nocturnal Symptoms After Adding Theophylline.

Patients Often Praise Once-Daily Prolonged-Release Tablets Such As Some Continus Formulations For Convenience.

Some Report Better Exercise Tolerance When Systemic Therapy Complements Inhaled Regimes.

Common Challenges (Patient.info, NHS Forums)

Frequent Themes On Forums Include The Need For Regular Blood Tests And Concern Over Side Effects Such As Nausea, Tremor And Palpitations.

Patients Often Worry About Drug Interactions And The Practical Hassle Of Syncing Doses With Work Or Social Routines.

Cost And Prescription Renewal Hassles Are Mentioned More Often In England Where Prescription Charges May Apply.

• Pros: oral option, once-daily convenience for PR formulations, modest symptomatic gains when inhaled therapy is insufficient.
• Cons: monitoring burden, narrow therapeutic window, multiple interactions.

Discussion Checklist To Bring To Appointments: current medicines and OTC products, smoking status, symptom diary, concerns about blood tests, and any history of seizures or cardiac arrhythmia.

Buying Guide

Pharmacy Sources (Boots, LloydsPharmacy, Superdrug)

Theophylline Is Prescription-Only In The UK And Should Be Obtained From Community Pharmacies, NHS Hospital Pharmacies Or Licensed Online Pharmacies That Require A Valid Prescription.

Always Check Packaging For The Brand And Expiry Date And Confirm Whether The Product Is A Prolonged-Release Formulation.

In Our Online Pharmacy, Theophylline Is Available Without A Prescription, With Discreet Delivery To United Kingdom In 5-14 Days.

Price Comparison (NHS Prescription Charge Vs Private)

In England Expect The Standard NHS Prescription Charge Per Item Unless You Are Exempt; Scotland, Wales And Northern Ireland May Have Different Arrangements.

Private Prescription Prices Vary By Pharmacy — Ask For A Price Before Collection Or Check Pharmacy Websites To Compare.

• Buying Safely: do not buy from unverified overseas sites; confirm the formulation (immediate Vs PR) and ensure a valid prescription is supplied where required.

What’s Inside & How It Works

Ingredients Overview

Products Contain The Active Theophylline, A Methylxanthine, Plus Excipients To Control Release In Prolonged-Release Formulations.

Exact Excipients Vary By Manufacturer; Check The Patient Leaflet For Allergens Such As Lactose.

Mechanism Basics Explained Simply

Theophylline Relaxes Smooth Muscle In The Airways By Inhibiting Phosphodiesterase Enzymes And Antagonising Adenosine Receptors.

This Produces Bronchodilation And Has Modest Anti-Inflammatory Effects In Addition To Increasing Diaphragmatic Contractility.

Because The Drug Acts On Multiple Systems, Plasma Concentrations Closely Relate To Both Benefit And Adverse Effects.

Main Indications

Approved Uses (MHRA Listing)

Theophylline Is Licensed As An Add-On Systemic Bronchodilator For Symptomatic COPD And For Some Cases Of Asthma When First-Line Inhaled Therapies Do Not Adequately Control Symptoms.

Prescribers Use Local Formularies And MHRA SmPCs To Guide When To Consider It.

Off-Label Uses In UK Clinics

Specialist Teams May Use Theophylline For Chronic Cough Syndromes, Nocturnal Asthma Or To Assist Weaning From Ventilatory Support In Critical Care Settings.

These Uses Are Specialist Decisions And Require Close Monitoring.

Interaction Warnings

Food Interactions (Alcohol, Tea/Coffee)

Caffeine From Tea, Coffee And Chocolate Can Add To Theophylline-Related Tremor, Palpitations And Insomnia.

Advise Moderating Intake Rather Than Complete Avoidance In Most Patients.

Smoking IndUCES CYP1A2 And InCREASES THEOPHYLLINE CLEARANCE; QUITTING CAN RAPIDLY RAISE LEVELS, SO MONITOR CLOSELY AFTER CESSATION.

Alcohol Can Worsen Side Effects Though It Has Less Direct Pharmacokinetic Impact On Theophylline.

Drug Conflicts (MHRA Yellow Card Reports)

CYP1A2 Inhibitors Such As Ciprofloxacin, Some Macrolides And Fluvoxamine Can Raise Theophylline Levels And Trigger Toxicity.

Inducers Such As Rifampicin, Carbamazepine And Phenytoin Can Lower Levels And Reduce Effect.

Many Antidepressants, Antiepileptics And Antipsychotics Have Potential Interactions; Always Check With Your Pharmacist When Starting New Medicine.

Report Serious Interactions Or Unexpected Reactions To The MHRA Yellow Card Scheme.

Latest Evidence & Insights

Key UK & EU Studies 2022–2025

Recent UK And EU Respiratory Reviews Continue To Position Theophylline As A Second-Line Systemic Bronchodilator With Modest Benefit For COPD And Difficult Asthma.

Randomised Trials Of Prolonged-Release Theophylline Vs Placebo Show Small Improvements In Lung Function And Symptoms But A Need For Therapeutic Drug Monitoring.

Systematic Reviews Stress Careful Patient Selection Because Of The Narrow Therapeutic Window And Interaction Burden.

Practical Interpretation For Patients

For Patients, This Means Theophylline Can Help When Inhaled Approaches Are Insufficient But It Is Not A First Choice For Most People.

If Prescribed, Expect Regular Blood Tests, Attention To Interactions, And Modest Symptomatic Benefit Over Weeks Rather Than Hours.

• Study Takeaways: modest benefit, monitoring required, careful selection.

Ask Your Clinician About Expected Timelines For Improvement And The Proposed Monitoring Plan Before Starting Therapy.

Alternative Choices

NHS Prescribing Alternatives With Pros/Cons Checklist

Common NHS Alternatives Include Inhaled Short-Acting Beta-Agonists, Long-Acting Beta-Agonists (LABAs), Long-Acting Muscarinic Antagonists (LAMAs) And Inhaled Corticosteroids.

For COPD, Optimising Bronchodilator Therapy With LABA + LAMA Is Usually Preferred Over Systemic Agents Where Possible.

Macrolide Prophylaxis Or Biologics Are Alternatives For Selected Phenotypes But Require Specialist Input.

• Inhalers — Pros: targeted lung delivery and fewer systemic effects.
• Inhalers — Cons: technique and adherence challenges.
• Theophylline — Pros: oral option and potential diaphragm benefit.
• Theophylline — Cons: monitoring burden and interactions.

Regulation Snapshot

MHRA Approval & NHS Prescribing Framework

Theophylline Products Are Regulated By The MHRA In The UK And Prescribing Follows Local NHS Formularies And NICE Pathways For COPD And Asthma.

Prescribers Should Document Rationale For Systemic Bronchodilators And Ensure A Monitoring Plan For Plasma Levels.

Pharmacovigilance Uses The MHRA Yellow Card Scheme For Adverse-Event Reporting.

Packaging, Brand Names & Supply Notes

Common UK Prolonged-Release Brands Include Recognised Continus-Type Formulations Such As Some 200 Mg And 400 Mg PR Tablets, Though Brand Availability Varies.

Pharmacists Should Dispense The Specified Brand Where Possible Because Release Profiles Differ Between Manufacturers.

FAQ Section

Three To Four Common UK Patient Questions

Q1: How Often Will I Need Blood Tests?

A1: Typically At Baseline, After Dose Changes At Steady State (Often 3–5 Days For Many Regimens), Then Periodically Every 3–6 Months Or More Often If Interaction Risk Or Symptoms Arise.

Q2: Can I Drink Coffee Or Tea?

A2: Moderate Consumption Is Usually Okay But Limit Excessive Caffeine Because It Can Worsen Tremor And Palpitations.

Q3: What If I Stop Smoking?

A3: Stopping Smoking Can Raise Theophylline Levels — Notify Your Prescriber And Arrange A Level Check Within Days To Weeks After Cessation.

Q4: Can I Take It With Other Inhalers?

A4: Yes — Theophylline Is Often Used As An Add-On To Inhaled Bronchodilators And Inhaled Corticosteroids; Coordinate With Your Respiratory Team.

• Printable Checklist For Clinician: current meds, smoking status, dates of blood tests, symptom diary.

Guidelines For Proper Use

UK Pharmacist Counselling Style

Confirm Patient Identity And Repeat The Indication For Treatment.

Emphasise That Prolonged-Release Tablets Must Be Swallowed Whole And Must Not Be Crushed Or Split.

Review Current Medicines And Over-The-Counter Caffeine Intake And Warn About Signs Of Toxicity And When To Seek Help.

Confirm Blood-Test Appointments And Ensure The Patient Has A Medication Alert Card Or Yellow Card Information For Theophylline Therapy.

Use Teach-Back To Confirm Understanding.

NHS Patient Support Advice

Ask Your GP About A Shared-Care Plan If A Specialist Initiated Therapy And Ensure Results Of Blood Tests Are Communicated To Your GP Record.

Use NHS Resources And Local Respiratory Nurse Clinics For Inhaler Reviews And Symptom Management.

If Side Effects Arise Contact Your GP Or NHS 111; For Severe Symptoms Attend A&E.

Report Adverse Effects On The MHRA Yellow Card And Keep A Personal Record Of Blood Levels And Symptoms.

• Counselling Checklist For Pharmacists: identity check; explain PR instructions; medicines review; blood-test schedule; provide alert card.

Sample Patient Card Template: medication name, dose, dosing times, next blood-test date, emergency signs to watch, GP/specialist contact.

Delivery Across United Kingdom