In the largest disciplinary action taken against medical marijuana doctors to date in Colorado, the state Medical Board on Tuesday suspended the licenses of four doctors for allegedly recommending excessive plant counts to more than 1,500 patients.

All of the recommendations involved approvals for patients to grow or possess at least 75 plants. The standard plant count for medical marijuana patients is six plants, and state health officials have long threatened to crack down on doctors who they believe recommend higher amounts without sufficient justification.

Four Colorado doctors suspended over medical marijuana recommendations