Poppers is a slang term given to drugs of the chemical class called alkyl nitrites that are inhaled. They are used for recreational drug purposes, typically for the "high" or "rush" that the drug can create, and to enhance sexual pleasure in general. Poppers are among several forms of recreational inhalants (drugs you breathe in) and are sold in small bottles or vitals as solvents. They are called “poppers” because once the capsule or bottle is popped open, the liquid turns into a gas that you inhale. The drug has a relaxation effect on involuntary smooth muscles, such as those in the throat and anus, and is used for practical purposes to facilitate anal sex by increasing blood flow and relaxing sphincter muscles. Poppers can cause serious health problems or death and are illegal for non-medical purposes.