IV fluids are specially formulated liquids that are injected into a vein to prevent or treat dehydration. They are used in people of all ages who are sick, injured, dehydrated from exercise or heat, or undergoing surgery. Intravenous rehydration is a simple, safe and common procedure with a low risk of complications
 
The 4 main types of IV fluids include:
Normal Saline.
Half Normal Saline.
Lactated Ringers.
Dextrose.