Hypodermoclysis, which can also be called interstitial infusion or subcutaneous infusion, is the subcutaneous administration of fluids to the body. This would often be in the form of a saline

Saline (medicine)

In medicine, saline is a general term referring to a sterile solution of sodium chloride in water but is only sterile when it is to be placed intravenously, otherwise, a saline solution is a salt water solution...

 or glucose solution.

Hypodermoclysis can be used where a slow rate of fluid uptake is required compared to intravenous infusion. Typically, it is limited to 1 ml per minute, although it is possible to increase this by using two sites simultaneously. The chief advantages of hypodermoclysis over intravenous infusion is that it is cheap and can be administered by non-medical personnel with minimal supervision. It is therefore particularly suitable for home care.

Hyalase can improve absorption via hypodermoclysis.