In New Jersey dispensaries and alternative treatment centers, medical marijuana can be distributed in ¼ or ⅛ ounce packages. While your certified MMJ practitioner will professionally recommend and prescribe the best dosage for your unique case, New Jersey law permits a 3 ounce possession within a 30 day period. An exception comes into play if the patient is determined to be terminally ill; in that case, the patient may be in possession of an unlimited amount of medicinal marijuana.