Levosalbutamol: Quick Facts for Asthma Relief

If you’ve been prescribed a rescue inhaler, chances are you’ll see the name levo‑salbutamol on the label. It’s a bronchodilator that opens up the airways in minutes, so you can breathe easier during an asthma flare‑up. Below we break down the basics, how to use it right, and what to watch out for.

How Levosalbutamol Works

Levosalbutamol belongs to the beta‑2 agonist class. When you inhale it, the medication relaxes the smooth muscles around your bronchi, widening the passages and letting more air flow in. The effect starts in about 5‑10 minutes and peaks around 30 minutes, making it ideal for sudden wheezing or shortness of breath.

Getting the Dose Right

Most inhalers deliver 50‑100 µg per puff. Your doctor will tell you how many puffs you need when symptoms hit. A typical rescue dose is one to two puffs, but never exceed the maximum daily limit (usually eight puffs). If you’re using a nebulizer, the usual dose is 2.5 mg diluted in saline, administered over 5‑10 minutes.

Always shake the inhaler before use, attach a spacer if you have trouble coordinating breaths, and exhale fully before inhaling the medication. Hold your breath for about 10 seconds after the puff to let the drug settle in the lungs.

Keep a rescue inhaler handy at all times—work, school, or in the car. Missing a dose when you need it can turn a mild shortness of breath into a severe attack.

Common side effects include a shaky feeling, fast heartbeat, or a mild throat irritation. These usually fade quickly. If you notice chest pain, severe tremors, or a worsening of asthma symptoms after use, seek medical help right away.

People with certain heart conditions, high blood pressure, or diabetes should talk to their doctor before starting levo‑salbutamol. The drug can raise heart rate, which may be risky for some patients.

Storage matters too. Keep the inhaler at room temperature, away from direct heat or cold. Don’t store it in a car glove compartment during summer or winter. If the inhaler feels stuck or you can’t feel a spray, check the expiration date and replace it if needed.

Levosalbutamol is often compared to albuterol. Both work the same way, but levo‑salbutamol is the “left‑handed” version, meaning it’s a bit more potent per microgram. Some doctors prefer it for patients who need a stronger response with fewer puffs.

For kids, dosing is weight‑based, so always follow the pediatric instructions. A spacer device is especially helpful for children, as it reduces the need for perfect inhalation timing.

When you’re not having an attack, stick to your maintenance inhaler (usually a corticosteroid) as prescribed. Levosalbutamol is only for quick relief, not long‑term control.

Finally, keep a written asthma action plan from your doctor. It should list when to use levo‑salbutamol, when to add a second rescue medication, and when to call emergency services. Having a plan saves time and reduces panic during an attack.

Understanding levosalbutamol, using it correctly, and knowing its limits can make the difference between a calm recovery and a dangerous situation. Keep this guide handy, talk to your healthcare provider if anything feels off, and breathe easy.