i ran out of my 20 mg of prozac i have been down from 40 to 30 for about a weeek and the last couple days i have had only 20 mgs cause i had 10 mg pills..didnt know if i could take 3 10 mg pills to equal 30...i have been on prozac since march 3...do u think its reached its efffective stage yet...i feel ok after two days on 20 ,,,or i wonder if i need to go back up...dr says its up to me