Most illegal drugs can have adverse cardiovascular effects, ranging from abnormal heart rate to heart attacks. Injecting illegal drugs also can lead to cardiovascular problems, such as collapsed veins and bacterial infections of the blood vessels and heart valves.
Many drugs, such as cocaine, heroin and various forms of amphetamine, affect the central nervous system and can alter a user's consciousness. In addition to addiction, the side effects and risks associated with use of these drugs include:
changes in body temperature, heart rate, and blood pressure
headaches, abdominal pain, and nausea
impaired judgment and greater risk of some sexually transmitted infections
the added danger of added substances (such as talc, poisons, herbicides or other particles) which may cause a toxic reaction.
possibility of added substances (such as talc, poisons, herbicides or other particles) which may cause a toxic reaction.
heart disease , seizures, and respiratory arrest