Smoking caused acidity.took prilosec 10 months.stopped the med. and again feel light ache.endoscoped-mild antral gastritis.should i continue the med. ?

Sure, but...: Unless you have a known allergy or sensitivity to prilosec, then this drug is a very appropriate choice for gerd and gastritis re-management. As proven effective and relatively safe as it may be (it has been commercially available in the usa since 1989), the drug is not meant for prn ("as needed") use--the drug reaches its optimal acid suppression after several days of daily use. No smoking pls!

Yes: Discuss with your GI doctor before deciding to stop the medication.