I took my last Sudafed and threw the box away. Went to the drug store and looked for my WHITE BOX with the WHITE PILL in it. I do not remember the dosage, etc., as usually took one pill and I was good for 2 days or more. It stopped my nose from running. Now there are 4 or 5 "dosages" and no one can tell me which one I need. I bought the 8 hour and felt dizzy most of the day. Can anyone tell me what dosage I was using?