Symbicort

Symbicort is a combination inhaler containing two medicines: budesonide (the steroid preventer in Pulmicort) and formoterol (a long-acting bronchodilator). It's used for asthma in adults and adolescents and for COPD, delivering both an anti-inflammatory and an airway-opening dose in a single device.

Budesonide treats the underlying inflammation in the airways, which is the slow-burning problem that drives asthma in the long term. Formoterol relaxes the muscle around the airways and opens them up. Crucially, formoterol is unusual among long-acting bronchodilators — it begins to work within minutes (similar to salbutamol), but the effect lasts around 12 hours rather than four to six. This unusual combination of fast onset and long duration is what allows Symbicort to be used in a particular asthma strategy known as MART.

MART stands for Maintenance and Reliever Therapy — sometimes called SMART. The idea is that you use a single inhaler both as your daily preventer and as your reliever, taking extra puffs whenever you have symptoms. Because formoterol acts quickly enough to relieve symptoms in real time, while budesonide is delivered alongside it, you simultaneously treat the symptom and top up the anti-inflammatory dose at the very moment the airways are flaring. UK and international guidelines have moved firmly in favour of this approach for many people with asthma. Not every Symbicort prescription is intended as a MART regimen, though, so always check with your prescriber whether yours is for maintenance only or for MART.

Hold it upright, twist the base until it clicks to load a dose, breathe out gently away from the mouthpiece, then breathe in fast and deeply. Hold your breath for around ten seconds and breathe out gently. As with all Turbohalers, you may feel and taste very little — trust the dose counter rather than the sensation.

Symbicort comes in different strengths, the most common in the UK being 100/6, 200/6, and 400/12 (the first number is the budesonide dose in micrograms, the second is the formoterol dose). The exact dose and frequency depend on whether you're being treated for asthma or COPD, and whether you're on a MART regimen. Your prescriber will set both.

The most commonly reported are oral thrush, hoarse voice, throat irritation, headache, mild tremor, and occasional palpitations. Rinsing the mouth and spitting after each dose helps reduce the local steroid effects. Persistent palpitations, chest pain, or unusual tremor are worth flagging.

The bronchodilator effect of formoterol is felt within minutes. The full anti-inflammatory benefit of budesonide builds over several weeks, just as with any preventer.

This is a key clinical point. Seretide contains salmeterol rather than formoterol, and salmeterol takes around 30 minutes to work. That delay is too long to make Seretide useful as a same-time reliever, which is why Seretide is used as maintenance only, while Symbicort can be used in either role.

Both component drugs have substantial safety data behind them. Symbicort is used in pregnancy where clinically appropriate and is licensed in older children and adolescents — exact age limits depend on the strength and the indication. As always, the priority is well-controlled asthma rath

A few extra reliever puffs on a bad day are part of how the regimen is designed to work. But repeated heavy use over days is a warning sign that asthma is escalating, and you should follow your asthma action plan and contact a GP or clinician promptly. The MART approach is designed to flatten out short flares — not to substitute for review when control is genuinely deteriorating.