A drug addict showed symptoms of increased appetite, chest pain, redness of eyes and increased urination. He was possibly taking 

Cannabis are group of chemical compund which interacts with cannabinoid receptors present mainly in the brain. These are obtained from the inflorences of the plant Cannabis sativa. These are inhaled or digested orally. Leaves, flowers , tops and resins of the Cannabis plant is used to produce hasish, charas, marijuana and ganja. This drug affects the cardiovascular system. It is a strong stimulant. When taken in high doses cause headache, convulsions, hallucination, irritaion and redness in eyes, increased appetite, increased urination etc.