18mg of methylphenidate (generic brands). I've been very lucky to have such a positive response to such a low dose, as it's helped me tremendously with only th

18mg of methylphenidate (generic brands). I've been very lucky to have such a positive response to such a low dose, as it's helped me tremendously with only the mildest of side effects (occasional high pulse, sore jaw). Higher doses do nothing but increase my heart rate.