These effects may diminish with time. Overuse of Salmeterol or Serevent can cause heart beat irregularities. People should not overuse Salmeterol or Serevent because of potentially fatal heart complications. If someone is using a greater than prescribed dose, or if they are finding no relief with Salmeterol or Serevent, their condition should be investigated further. People with heart conditions should use Salmeterol or Serevent with caution.
Proper technique is required with all inhalers.
Storing the inhaler upright and out of sun or cold may prolong an inhaler's life. Salmeterol or Serevent is designed to be used on a routine basis along with an inhaled corticosteroid to prevent breathing problems. The relevant product monographs must be regarded as the appropriate sources of prescribing information.