The aim of this lecture is to present on Risks of Using Drugs. These Risks vary according to: circumstances of the use; the motivation and knowledge level of the user; their mood and expectation at the time of use; the manner of use and size of dose. Risks Factors Involved in Drug Taking are Users can never be sure of exactly what they are taking; Not knowing the strength of what has been bought could lead to an accidental overdose (which may be life-threatening) and Users can’t be precisely sure of the effect the drug will have, even if they have taken it before.