With more than half of the United States legalizing or decriminalizing marijuana, advertising for weed and weed-based products has become something of a hot topic for marijuana dispensaries. What are they allowed to advertise and where? What can they include on their tax reports? Should they worry about fines if they try to promote their product? Here’s what you need to know about advertising a cannabis businesses.

Marijuana has a storied history of medicinal uses. Ancient Chinese, Egyptian and even Roman healers used it both internally and externally for pain relief and long-term disease treatment. Even Queen Victoria used it to ease her pain during labor.

Today, marijuana is approved for use across the United States in nearly half of the states plus the District of Columbia. Advocates promote it as a treatment for cancer, hepatitis, glaucoma, ALS and even HIV. The FDA has even approved basic research on marijuana’s potential as a treatment for childhood epilepsy.

As 2017 pushes forward, so does Pennsylvania’s Department of Health, which is developing the state’s Medical Marijuana Program for a 2018 release. So far, the department has built its Medical Marijuana Physician Workgroup, as well as opened and reviewed applications for growers, dispensaries and labs.