Airtec SF 100 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 Your doctor will tell you how often you need to use your inhaler The effect of this medicine may be noticeable after a few days but will only reach its maximum after a few weeks This medicine must be used regularly to be effective so go on taking it even if you don t have any symptoms That means it s doing its job If you stop taking it your asthma and chronic obstructive pulmonary disorder COPD may get worse It should not be used to relieve sudden asthma attacks If an asthma attack occurs use your quick relief inhaler reliever To get the benefit from this medicine you need to make sure you get your inhaler technique right otherwise it does not work as well The most common side effects are Nausea vomiting respiratory tract infection fungal infections in the mouth headache hoarseness of voice sore throat cough musculoskeletal bone muscle or joint pain and increased heart rate If you get there do not stop taking it but do talk to your doctor You can help prevent some of these symptoms by rinsing your mouth and throat with water or brushing your teeth after using your inhaler There are other rarer side effects that can be serious Talk to your doctor if you re worried about them In general you should be trying to avoid situations that make your asthma worse your triggers and try not to smoke