I highly doubt this is even a legitimate post. More likely, it's just intended to try and start an argument about the legalization of marijuana. As PP's and the OP have already pointed out marijuana is illegal in FL.
To answer the question implied by the OP, if you believe you have a disability that requires a special "medication" you can ask Guest Services (DAS) for an accommodation. As the OP knows, that request will likely be denied. Which brings me back to my original thought, why try to start a conversation about it on DIS?