i was taking .4mg daily and my doctor gave me 0.4 mg twice a day and it works barely, so i asked my doctor if i could take 0.8 mg dosage to see if would work better. i have been taking 0.4mg bid for 5 years and very little side effects, dizzy and stuffy nose. can i take 0.8 mg bid, safelly. i am a retired military pharmacist, 28 years usaf and 20 years kaiser pharmacy corp. i am 85 years old and my sex life has not been used for last 20 years, due to flomax causing lack of getting any sexual arousal. thank you billy perkins