Intramuscular (IM) injections are used to deliver medication deep into your muscles. Your muscles have lots of blood flowing through them, so medications injected into them are quickly absorbed into ...

After receiving an injection, some people experience symptoms at the injection site on the skin. This reaction is a common adverse effect of vaccines, Botox injections, biologics, and chemotherapy.

A subcutaneous injection, or shot, enters the fatty tissues just beneath the skin. It is shallower than an injection into muscle tissue. Healthcare professionals often use subcutaneous injections for ...

Subcutaneous (subQ or SQ) injections are shots given in the fatty tissue layer (subcutaneous fat) under your skin. Your skin has many layers, and the subcutaneous layer is beneath the epidermis and ...