36 mg concerta daily in the morning it usually keeps me on 12 hours or so.

or a 10mg ritalin which keeps the effect about 5 hours or so so I can take another if it will be a long nigth, taking concerta in the nigth is not a good idea because you will burn out and wont be able to sleep if you decide to.

Concerta is a small container with a laser drilled hole and a constant delivery mechanism for 12 hours or so and ritalin is bumpier on the dosage but concerta is more expensive about 120$ in Turkey for a month worth refill where ritalin is only 20$ for a month excluding the doctors fee which is 150$ so it costs around 200$ for a month and no insurance scheme covers it.