"i&#039;ve been on prozac for about 20 years and it&#039;s been a lot of help but at age 68 i found myself wanting to nap a lot more and my motivation decreasing. i switched to wellbutrin and once the therapeutic dose was established i began to feel better within a week or two. i feel more energetic and yet more composed and at ease. i&#039;m very pleased with this drug, not the least because my sex life has returned. i think my life would have been different if i&#039;d started it 20 years ago."