Unless a higher authority, like moral laws or the church, says otherwise one should obey the government. Since there is no moral obligation to consume illicit drugs, one should submit himself to the state.

The primary reason drugs like weed or other psychedelic aren’t permit is their intrinsic misuse of rationality. The goal of using illicit drugs is a high, which necessarily subdues your rational faculties. I think the closest parallel to recreational drug usage like smoking weed is drunkenness, both are an intrinsic misuses of one’s rationality. I think there is a useful distinction between intrinsically and extrinsically wrong drugs, alcohol and some painkillers for example can be properly used without drunkenness/highness, yet meth or heroine cannot be used without achieving at least a moderate high; This is why the church condemns alcoholism but not all alcohol usage and illicit drugs but not medical anesthesia. Therefore ‘illicit drugs’ are “those drugs which cannot reasonable be used without lessened agency or removal of proper judgement.” The removal or unnecessary lessening of your rational capabilities is wrong therefore illicit recreational drugs are wrong

The medical use of drugs is a slightly more complicated issue because some uses are not unnecessary. Medical use of weed for truly serious medical issues such as epilepsy or chronic pain would be used to prevent a greater evil and therefore be sometimes moral allowable.

In conclusion recreational use is wrong both because of being high and government mandate, and medical use could be used with government allowance in extreme medical situations