
Likely Side Effects
All medicines may cause side effects, but many people possess no, or minor, side effects. Check with your doctor incase any of these most ORDINARY side effects persist or become bothersome:
Headache; nasal or sinus congestion; nervousness; stuffy nose; throat irritation; tremor.
Seek health examination attention fair away incase any of these VERY [...]

Warnings/Precautions
Do not take Serevent if:
you are allergic to any ingredient in Serevent;<li you are using another medicine that has a long-acting beta-agonist (eg, fluticasone/salmeterol, formoterol) in it;
you are having an asthma attack (eg, unexpected very bad onset or worsening of asthma symptoms such as chest tightness, cough, shortness of breath, wheezing).
Contact your doctor [...]