Systems and methods are provided for distributing a product, like hydrogen, contained in a carrier to a user, and for recovering the spent from the user . In one embodiment, the invention is a system for distributing a product releasably incorporated Within a carrier, recovering spent, and conveying spent to a rehabilitation facility. In this embodiment, the system comprises a mobile delivery vehicle, the vehicle comprising a first storage vessel for storing fresh and for dispensing fresh using a connected fresh dispensing apparatus and for receiving and storing spent from a spent dispensing apparatus, the storage vessel further including means for separating fresh from spent. The system further includes fresh, spent, and a first user. The first user comprises a fresh storage vessel for receiving, storing, and dispensing fresh, and further comprises a first spent storage vessel for receiving, storing, and dispensing spent. The system further includes a fresh dispensing apparatus for linking the first storage vessel and the fresh storage vessel of the first user for dispensing of fresh to the first user, and a spent removal apparatus for linking the first storage vessel and the spent storage vessel of the first user for removal of fresh from the first user for storage in the first storage vessel. Use of a mobile delivery vehicle to deliver fresh and recover spent for rehabilitation from a plurality of users avoids logistic inefficiencies, and reduces potential for contamination and/or loss of product, carrier, fresh, and spent.