My youngest son used Intal inhaler and nebulizer for years..you can expect similiar side effects as with Ventolin (albuterol)...it can cause heart palpitations, twitching....all side effects should actually come with your inhaler---nowadays, pharmacists must include this type info...there are also many other inhalation treatments you may benefit from....azmacort and such...and the albuterol should only be used for attacks--don't use the intal for an attack...it's action isn't the same......