Symbicort is a combination of two drugs - budesonide (Pulmicort) an inhaled
steroid similar to Flovent and formoterol (Foradil) a long acting
bronchodilator that works like albuterol (Ventolin) but lasts a long time
like Servent. If Servent gave you side effects it is not surprising that the
Symbicort did as well since the formoterol component is similar to the
Serevent. The relative dose of formoterol in Symbicort is lower than the
dose of Serevent so it was worth a try but it doesn't seem like it is
working out.

Your doctor does have several other things he could do. He could give you a
seperate Foradil inhaler and inhaled steroid and push just the dose of the
inhaled steroid while keeping the dose of Foradil low. He could try other
meds such as Singulair or other types of inhalers. You may get fewer side
effects from a different type of bronchodilator such as Spiriva or Atrovent.
He also should consider other causes of wheezing like allergy/sinus disease,
reflux, or other lung conditions.

You didn't mention if the doctor is a pulmonologist (lung specialist) or
not. I disagree with several posters here that say all asthmatics should be
seeing a specialist but if the non-specialist is not getting a handle on it
then a referral is certainly warranted.