Ga. Code § 43-34-126
Patient participants in the program are immune from state prosecution for possession of marijuana as authorized by this article and under the program established in this article. A person authorized under this program shall not possess an amount of marijuana in excess of the amount prescribed under the authority of this article. The amount prescribed shall be maintained in the container in which it was placed at the time the prescription was filled. Physician, pharmacy, and pharmacist participants in the program are immune from state prosecution for possession, distribution, and any other use of marijuana, which use is authorized such persons by this article. Any such possession, distribution, or other use not authorized by this article shall be enforced and punished as provided in Chapter 13 of Title 16, relating to controlled substances and dangerous drugs, and Chapter 4 of Title 26, relating to pharmacists and pharmacies.
OCGA § 43-34-126