Theophylline Extended-Release: What It Is and How to Use It

If you’ve been prescribed theophylline extended‑release, you probably want to know what it does and how to take it safely. In plain words, this drug helps open up your airways so breathing feels easier. It’s a long‑acting version of theophylline, meaning you only need to take it once or twice a day instead of many times.

Why choose extended‑release? The steady release keeps blood levels stable, which reduces the chance of spikes that can cause side effects. For people with asthma or chronic obstructive pulmonary disease (COPD), this smooth delivery often feels more comfortable than short‑acting tablets.

How It Works

Theophylline belongs to a group called methylxanthines. It relaxes the muscles around your airways and also reduces inflammation. Think of it like a tiny helper that tells the lungs to stay open. The extended‑release form spreads this help out over many hours, so you don’t notice big ups and downs in how you feel.

Because the drug stays in your system longer, you’ll usually start feeling relief within a few days, but full effect can take up to two weeks. That’s normal – the body needs time to adjust to the steady amount of medicine.

Dosage & Safety Tips

Typical adult doses range from 200 mg to 600 mg once daily, depending on your weight, age and how well your kidneys work. Your doctor will start you low and may check blood levels after a week to make sure you’re in the right range.

Never change the dose or skip a pill without talking to your doctor. Missing a dose can cause symptoms to come back, while taking extra can lead to nausea, headache, or a fast heartbeat. If you feel any of these, call your healthcare provider right away.

Food doesn’t usually affect how the extended‑release tablet works, but avoid drinking a lot of grapefruit juice. Grapefruit can raise the amount of theophylline in your blood and increase side effects.

Other medicines can interact with theophylline. Common culprits include certain antibiotics (like ciprofloxacin), anti‑seizure drugs (like phenytoin) and some heart medications. Keep a list of everything you’re taking and show it to your doctor or pharmacist.

Pregnant or nursing moms should discuss risks with their doctor. Theophylline crosses the placenta, so doctors weigh benefits against possible effects on the baby.

In case you forget a dose, take it as soon as you remember unless it’s almost time for your next one. Don’t double up – just continue with your regular schedule.

Regular check‑ups are key. Your doctor may order blood tests to make sure the drug level stays in the safe zone. Most people stay within that range after a few adjustments.

Overall, theophylline extended‑release can be a helpful part of an asthma or COPD plan when used correctly. Follow your prescription, watch for side effects, and keep communication open with your healthcare team.