Absorption

The process of a drug passing through a body surface to the tissues of the body

Action

A description of the cellular changes that occur as a result of a drug

Adverse Effects

Possible untoward secondary effect other than the desired effect

Adverse Reaction

Harmful unintended reactions to a drug

Allergic Reaction

Hypersensitivity to a drug with symptoms ranging from a rash to an anaphylaxis

Ampule

Glass container for injectable drugs that must be broken at the neck to withdraw the medication

Anaphylaxis

Severe life-threatening hypersensitivity to a foreign substance or drug; symptoms include dyspnea, chest pain or tightness, life-threatening arrhythmias, and death

Antagonism

Opposing action of a drug that decreases or cancels the effect of another drug

Buccal

Within the cheek

Contraindication

Condition or situation that indicates a drug should NOT be given