The immediate effects of illicit cannabis use may include a general feeling of wellbeing and relaxation, and an altered perception of time. People who use cannabis may be talkative, or feel hungry or drowsy. Some people who use cannabis feel restless, irritable or anxious. Cannabis use can also impair thinking, memory, and concentration. Body movement and coordination are also impaired after using cannabis, and reaction time increases. Other effects of cannabis use include a dry mouth, bloodshot eyes, and increases in heart rate and blood pressure.

For more information about potential long-term negative consequences of cannabis use, refer to FAQ What are the health risks of cannabis use?