Airtec SF 250 Instacap is a combination of two medicines that opens the airways and makes it easier to breathe It is used in the treatment of asthma wheezing and shortness of breath and chronic obstructive pulmonary disorder a lung disorder in which the flow of air to the lungs is blocked This medicine is for inhalation purpose only Thus it should not be taken by mouth It is important to follow all the guidelines of doctor before using it You should never stop using this medication suddenly as it may worsen your symptoms However before using it inform doctor if you are suffering from any severe medical condition