The most common signs and symptoms of overdose with Ventolin are transient β-agonist pharmacologically mediated events (see Precautions and Adverse Reactions).
Hypokalaemia may occur following overdosage with Ventolin. Serum potassium levels should be monitored.
Lactic acidosis has been reported in association with high therapeutic doses as well as overdoses of short-acting β-agonist therapy, therefore monitoring for elevated serum lactate and consequent metabolic acidosis (particularly if there is persistence or worsening of tachypnea despite resolution of other signs of bronchospasm eg, wheezing) may be indicated in the setting of overdose.