Why are medicines injected into the hypodermis?

Answer 1

"Although not a common route of exposure for poisons, injection is the only route in which the entire amount exposed is absorbed regardless of the chemical administered, because the chemical is introduced directly into the body."........ "Ingestion is the most common route of exposure to toxic chemicals. Most chemicals diffuse across the cell membrane in the nonionized form, so that the degree to which the chemical is ionized is important in determining whether a chemical is absorbed"



http://www.britannica.com/EBchecked/topic/466463/poison/28085/Routes-of-exposure-and-absorption-of-chemicals

Answer 2

Medicines are injected into the hypodermis for several reasons, including providing a slow and sustained release of the medication, avoiding degradation in the stomach acids, and ensuring direct absorption into the bloodstream for quicker action. The hypodermis is a layer of tissue rich in blood vessels, making it an effective route for delivering drugs.