Ventolin and Atrovent inhalation are given in asthma or bronchial spasm due to other causes. Inhalation with Ventolin is much safer than oral Ventolin. In fact any nebulization or inhalation is safer than oral medication as the medicine directly reaches the target organs (lung and airway) instead of reaching the whole body therefore minimising the adverse effects, increasing effectiveness and reducing the dosage. Oral Ventolin after getting absorbed from GIT, reaches every organ of the body through blood. As a result adverse effects like increased heart rate, tremors etc. are seen with oral Ventolin.