What should you know about IV magnesium sulphate for asthma?

Magnesium sulphate is given through a vein by a healthcare professional in an emergency or hospital setting. It can help relax airway muscle, but it is an add-on treatment rather than a replacement for prescribed inhalers, oxygen, steroids, or other emergency care. Staff monitor breathing, pulse, blood pressure, and how you respond. You may notice warmth, flushing, nausea, dizziness, or a change in blood pressure during the infusion.

Use your reliever inhaler according to your asthma action plan and seek urgent help if symptoms are severe or worsening. Sit upright, keep as calm as possible, and take prescribed medicines as directed. Tell clinicians about pregnancy, kidney problems, heart conditions, allergies, and every medicine you use. Never arrange or administer IV magnesium sulphate yourself; the dose and monitoring require clinical supervision.

Call emergency services for severe difficulty breathing, inability to speak in full sentences, blue or grey lips, exhaustion, confusion, collapse, or a reliever inhaler that is not helping. Asthma can worsen quickly, including during pregnancy. If symptoms improve after treatment, still follow the discharge plan and arrange review so triggers, inhaler technique, and prevention can be checked.

Ask why magnesium sulphate is being considered, what other treatments will be given, how your response will be monitored, and what your personalised plan is for preventing another severe attack.