Salbutamol is a drug that works along the sympathetic nervous system, stimulating the beta receptors. Cromolyn sodium prevents the mast cells from releasing the chemicals of an allergic reaction. It is preventive, not curative, in action. Newer drugs which provide quicker relief are available now, but none is natural in its mode of action. At the end of the drug list are steroids which reduce airway blockage by their anti-inflammatory action.
Intravenous therapy is used, depending on the clinical condition.
Most of the drugs have side effects like tremors, palpitations, sweating, ectopic beats and gastric disturbances. This is related to the severity of the disease and, therefore, the frequency of drug usage. It is not possible to predict whether the disease will worsen or not, as the aggravating conditions are multifactorial. Moreover, if the patient is in a state of tense anticipation of an attack, it is difficult to reduce the dosage. Regardless of the pattern of attacks, an asthmatic must be taught how to relax the mind.