I have a package of 30 tablets of Rubifen 20mg which is the same that Ritalin IR 20mg. I took four tablets each of 20mg methylphenidate inmediate released. The effects are noticeable with nervous system arousal, alert, weaknesses, well-being, high mood and high skill of attention and concentration. Now it is 9:00, at 9:30 I will buy some cigars and I will snort 20mg followed by smoking a cigar. I have l-theanine, Can it be good to mix with methylphenidate?