Systems, methods, and devices for providing subcutaneous hydration are disclosed. A system for providing subcutaneous hydration may include an infusion bag including a hydration fluid, a tubing removably connected to the infusion bag, a squeezable bulb at least partially encompassing the tubing for at least one of flushing and priming the tubing, and a deployment device including an integrated needle which is operative provide subcutaneous hydration through the needle. A deployment device for subcutaneous hydration includes a base may include a needle aperture, a spring-loaded barrel attached the base and including a needle, and a firing mechanism within the barrel for deploying the needle from the barrel and further operative to project the needle through the aperture only when a tent of skin has been raised within the aperture for injection. A method for providing subcutaneous hydration may include steps necessary to operate the systems and devices for subcutaneous hydration.
