Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and reacts vigorously with water, generating sufficient heat to ignite hydrogen emitted in the reaction and burning with a lilac flame.
An antianginal is any drug used in the treatment of angina pectoris, a symptom of ischaemic heart disease.
Commonly Abused Drugs: Commonly abused classes of prescription drugs include opioids (for pain), central nervous system (CNS) depressants (for anxiety and sleep disorders), and stimulants (for ADHD and narcolepsy). Opioids include: