Medical marijuana refers to the use of the cannabis plant and its compounds to treat various medical conditions. It contains active ingredients like THC and CBD, which can help alleviate symptoms such as pain, nausea, and inflammation. Medical marijuana is often prescribed for conditions like chronic pain, epilepsy, and multiple sclerosis. In many regions, medical marijuana is regulated and can only be obtained with a doctor's prescription. Patients may use it in various forms, including oils, capsules, or vaporized products. Research continues to explore its effectiveness and safety for different health issues.