The present invention is directed to a dispensing system, device, and method for the dispensing of a fluid supplement such as in the form of a concentrated fluid containing flavoring, nutrients, medication, and/or other supplements. Certain embodiments of the invention as disclosed herein comprise a handheld apparatus which allows the dispensing of predetermined amount of a fluid with single-handed use. Certain embodiments include self-contained pods which is controlled by a removable dispenser to allow for multiple types of fluids, and preventing cross-contamination within the dispenser.