"i am a 60 year old male with adhd, who would have ever thought it? i started using focalin ir 5mg after cutting it into four(4) pieces. i would take one quarter piece every three hours. it took me from being nonproductive to productive again with very few side effects. i am now taking focalin xr, 10 mg in the morning and a 5 mg 6 hours later in the afternoon. i think my ideal dose will end up at 15 mg am and 10 mg afternoon to reach the optimal dose. the only side effect has been heartburn, a slight headache and being a little jittery with a occasional outburst of anger. i can handle the side effects which have subsided somewhat, to get the wonderful effects of this medication! alive again at 60 yrs old!"