Tag: Injection types

Some injections provide immediate relief, while others can last for months or even years. The question of **how long does the effect of an injection last** depends on a wide range of pharmacological factors, including the type of medication and how it is administered.

The intradermal (ID) injection route has the longest absorption time of all parenteral routes, making it ideal for sensitivity tests [1.4.2]. Answering 'What is an intradermal injection?' involves understanding its use in delivering a substance just below the epidermis for diagnostic purposes [1.2.2, 1.4.2].