According to California Senate Bill 420 (LOLOL),

11362.77. (a) A qualified patient or primary caregiver may possess no more than eight ounces of dried marijuana per qualified patient. In addition, a qualified patient or primary caregiver may also maintain no more than six mature or 12 immature marijuana plants per qualified patient.
(b) If a qualified patient or primary caregiver has a doctor’s recommendation that this quantity does not meet the qualified patient’ s medical needs, the qualified patient or primary caregiver may possess an amount of marijuana consistent with the patient’s needs.
(c) Counties and cities may retain or enact medical marijuana guidelines allowing qualified patients or primary caregivers to exceed the state limits set forth in subdivision (a).
(d) Only the dried mature processed flowers of female cannabis plant or the plant conversion shall be considered when determining allowable quantities of marijuana under this section.

Assuming you could smoke 8 ounces in a day (which is ludicrous, unless you are Snoop Dogg and none of your friends are contributing to the circle ever again) and medical marijuana clubs are open 7 days per week then you could presumably purchase 56 ounces of medical marijuana per week so long as the guys at the club don’t give you a hassle about… y’know. Smoking three and a half pounds of medical grade marijuana per week. At .25 grams per joint and 28 grams per ounce that comes to 768 joints per day. Presuming it takes five minutes to smoke a joint, 8 ounces would be enough pot for one person to smoke for 64 hours straight. You’d need to hire some one else to roll them triple size while you smoked 24/7 to get through that in a day. Assuming you sleep 8 hours per day and stop smoking weed exclusively to roll joints, 8 ounces ought to be more than enough to get one full time professional certified unarrestable drug dea – i mean, *PATIENT* through a week. If consumed through a bong, vaporizer or pipe, then it should go 2-3.5 times further.