What is the salbutamol nebulisation dose for children?

Salbutamol nebulisation paediatric dose: 0.15 mg/kg per dose (minimum 2.5 mg, maximum 5 mg per nebulisation). For a 10 kg child: 1.5 mg = 0.3 ml of 5mg/ml nebuliser solution (Asthalin 5mg/2.5ml ampoule: use 0.3 ml + 2.2 ml normal saline). In acute severe asthma, nebulisations can be given every 20 minutes for 3 doses under monitoring.

How many puffs of salbutamol MDI for a child?

For mild-moderate acute asthma in children: 2–10 puffs of salbutamol 100mcg MDI via spacer (e.g. Aerochamber), each puff inhaled separately. For children under 6 years: 2–6 puffs. Repeat every 20 minutes in acute attack. Each puff = 100 mcg. MDI via spacer is as effective as nebuliser for mild-moderate attacks per BTS/SIGN guidelines.

What is the difference between salbutamol and levosalbutamol?

Levosalbutamol (levalbuterol) is the R-enantiomer of racemic salbutamol. It is available as Levolin in India. At half the dose (1.25 mg vs 2.5 mg), it provides equivalent bronchodilation with fewer cardiovascular side effects (tachycardia, tremor). Preferred in patients who experience excessive tachycardia with standard salbutamol.

Salbutamol Dose Calculator India | Nebulisation & Inhaler | Paediatric & Adult

Salbutamol Dosing Reference — Nebuliser, MDI & IV

Route / Patient	Dose	Frequency	Preparation
Nebuliser — child (<5 yr)	0.15 mg/kg (min 2.5 mg, max 5 mg)	Every 20 min × 3 (severe); Every 4–6h (mild)	Dilute to 2.5–4 ml with NS
Nebuliser — child (5–12 yr)	2.5 mg (0.5 ml of 5mg/ml)	Every 20–30 min × 3 if severe	2.5 mg + 2 ml NS
Nebuliser — adult / moderate	2.5 mg	Every 20–30 min × 3 (severe)	2.5 mg ampoule undiluted or + 1 ml NS
Nebuliser — adult / severe	5 mg (continuous if needed)	Continuous nebulisation in ICU	5 mg in 4 ml NS, O2 driven
MDI — child (spacer)	2–10 puffs of 100 mcg	Every 20 min (acute); Every 4–6h (ongoing)	1 puff at a time via spacer
MDI — adult	1–2 puffs of 100 mcg	PRN (max 8 puffs/day)	Shake, exhale, fire 1 puff, hold 10s
IV — adult (severe/near fatal)	250 mcg slow IV, then 3–20 mcg/min infusion	Infusion in ICU	ICU / resuscitation only
Hyperkalaemia (adjunct)	10–20 mg nebulised (adult)	Single high dose	10–20 mg = 4 × 2.5mg ampoules

Salbutamol — Clinical Guide for Indian Emergency & Paediatric Practice

Salbutamol (albuterol) is a short-acting beta-2 agonist (SABA) and the most important rescue bronchodilator in India for acute asthma, wheeze, and COPD exacerbations. It is available as Asthalin and Ventolin in nebuliser, MDI, rotacap, tablet, and IV forms. Rapid-onset bronchodilation (3–5 minutes via inhalation) makes it the backbone of acute asthma management in emergency departments and paediatric wards across India.

Paediatric nebulisation — the critical dose details

The weight-based paediatric dose is 0.15 mg/kg per nebulisation, with a minimum of 2.5 mg (even for small children) and a maximum of 5 mg. For most children weighing 5–15 kg, this means drawing 0.3–0.75 ml from a 5mg/2.5ml (2 mg/ml) Asthalin ampoule and diluting to 2.5–4 ml total volume with normal saline. The nebuliser should be driven by oxygen at 6–8 L/min — this simultaneously treats hypoxia and delivers the bronchodilator. In severe acute asthma, back-to-back nebulisations every 20 minutes for 3 doses (continuous nebulisation in ICU) are recommended under monitoring of heart rate and SpO2.

MDI with spacer — as effective as nebuliser

Multiple RCTs and meta-analyses confirm that salbutamol MDI (100 mcg/puff) via spacer device (Aerochamber, Volumatic) is at least as effective as nebulisation for mild-to-moderate acute asthma in children and adults. It is faster, more portable, and avoids nebuliser contamination risk — important in Indian settings. For children: 2–10 puffs via spacer, 1 puff at a time, each inhaled over 3–4 breaths with 30-second intervals between puffs. In severe asthma, a nebuliser is preferred as it can be oxygen-driven and administered continuously.

Levosalbutamol (Levolin) — when to choose it

Levosalbutamol (Levolin) is the R-enantiomer of racemic salbutamol. At 1.25 mg (equivalent to 2.5 mg salbutamol), it provides equivalent bronchodilation with less tachycardia and tremor — the S-enantiomer in racemic salbutamol is responsible for most of the cardiovascular side effects. Levosalbutamol is preferred in patients who develop significant sinus tachycardia or palpitations with standard salbutamol, and in patients with baseline tachycardia (cardiac disease, sepsis). Cost is typically higher — use in selected patients rather than routinely.

Salbutamol for hyperkalaemia — emergency use

High-dose nebulised salbutamol (10–20 mg in adults) is a valuable emergency treatment for hyperkalaemia — it shifts potassium intracellularly via beta-2 stimulation of Na-K-ATPase. It is typically used in combination with IV calcium gluconate (membrane stabiliser) and IV insulin-dextrose (redistribution). Onset of effect is 30 minutes; duration 2–4 hours. Note that approximately 40% of dialysis patients have an attenuated response to salbutamol for hyperkalaemia — do not rely on it as sole therapy in severe hyperkalaemia.

Frequently Asked Questions

How do I prepare a salbutamol nebulisation for a 10 kg child?+

For a 10 kg child: 0.15 mg/kg = 1.5 mg. Using Asthalin 5mg/2.5ml (= 2 mg/ml): draw 0.75 ml of the ampoule. Add 1.75 ml of normal saline to make 2.5 ml total. Place in nebuliser cup and run with oxygen at 6–8 L/min. Repeat every 20 minutes in severe attack (up to 3 times with monitoring), or every 4–6 hours in mild-moderate wheeze. This calculator provides the exact volumes automatically.

Is salbutamol syrup effective for children with wheeze?+

Salbutamol tablets and syrup have limited evidence for acute wheeze or asthma compared to inhaled routes. Oral salbutamol has slower onset, more systemic side effects (tachycardia, tremor, hypokalaemia), and is not recommended by BTS/SIGN or GINA for acute asthma management. It may have a role in very young infants unable to use inhalers where nebulisers are unavailable. Inhaled route (nebuliser or MDI with spacer) is always preferred.

What is the maximum number of salbutamol MDI puffs per day?+

The standard recommendation is no more than 8 puffs (800 mcg) of salbutamol MDI per day on a regular basis. Using more than 8–10 puffs per day indicates poorly controlled asthma and is a red flag requiring urgent step-up of controller therapy (inhaled corticosteroids) and medical review. Patients who are using more than 3 canisters per year are at increased risk of asthma death per GINA guidelines.

What are the side effects of salbutamol nebulisation to watch for?+

The most common side effects of nebulised salbutamol are: tachycardia (most common — expected mild increase of 10–20 bpm), tremor, hypokalaemia (especially with repeated doses or continuous nebulisation — check serum K+ in ICU), and a transient paradoxical worsening of hypoxaemia (due to V/Q mismatch). Monitor HR and SpO2 throughout. Stop and reassess if HR exceeds 180 bpm in a child or if there is clinical deterioration.

⚠️Decision-support tool for trained healthcare professionals. Severe asthma requires immediate hospital care. Verify against BTS/SIGN, GINA 2024 and current prescribing information.