There are several names for Cannabis. Some of them are marijuana, marihuana and ganja is also one of them. Cannabis is a product of Cannabis plant. It is mainly used as psychoactive drug or mind-altering drug. Herbal form is the most common form to be used from Cannabis.

The most common form of Cannabis i.e. herbal form consists of leaves, flowers, chaffs of female plant. Hashish is the resinous form of drug. The major component in Cannabis is ”9-tetrahydrocannabinol, abbreviated as THC. CBD (Cannabidiol), CBN (Cannabinol), and THCV (tetrahydrocannabivarin) are also present along with other 66 Cannabinoids.

Medical Cannabis has been used since third millennium B.C. Nowadays; Cannabis is used for many purposes like religious, recreational and medical purposes. United Nations shows a use of cannabis in North America, South America and Asia compared with 2009. In early twentieth century, the use, possession or sale of Cannabis having ingredients as psychotropic Cannabinoids was made illegal in most of the countries. After that some countries have made this law more intensified while some have made it legal.

Medical Cannabis has some well-known benefits. Some of its benefits include prevention and treatment of vomiting and nausea. It also induces hunger in AIDS and chemotherapy patients. It is also used for the treatment of glaucoma that is related to eye-disease. The surveys and the studies have shown that CBD is also responsible for eliminating schizophrenia or the least it can lower the affect of schizophrenia. It is also beneficial for depressed people. 

Inhaling Cannabis through smoking is the most harmful; and dangerous way of consumption. It can cause several health related problems. While inhaling Cannabis through vaporizer is the effective and the safe method of inhalation. It has very less or minimal harmful effects as compared to smoking. In the early 20th century the possession, use and sale of Cannabis has been banned in most parts of the world. But there are some parts where the cultivation of this plant is made legal. The laws have lessened the punishment for possession of Cannabis in small quantities. Its reduced to fine rather than imprisonment as earlier it was. But it is still in action in some of the countries. Mostly in East Asia, possession of Cannabis can lead the person for life imprisonment.