An adverse event is any unwanted or potentially harmful occurrence that happens during medical treatment. This is different from a side effect, which is directly caused by a specific drug or treatment.
Adverse events aren’t always linked to the treatment itself — they include any unexpected issue that arises while treatment is ongoing, regardless of the cause.
For medical cannabis patients, adverse events may happen because of interactions with other medications, or as part of the underlying health condition being treated. Some commonly reported adverse events include dizziness, fatigue, dry mouth, or short-term effects on memory and concentration.
