Unless absolutely necessary, (whatever necessary is to the individual) I would avoid taking any pharma medication that may be injurious to your body. It's unknown how much is too much before let's say your liver starts to be damaged from drugs. As far as the focus goes, concentrate on one task at a time, especially the ones you've been putting off, getting into it until such time as interruptions like business phone calls need to take precedent with your time. You may have the luxury of a workplace that is sterile to the extent that you can delve into such tasks w/o ever-present family interruptions. Also, I believe that since you recognize you want to solve an issue you've noticed about yourself, I believe you may be able to exact focus at some point w/o drug(s).

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