A fluid delivery system usable in an oral care implement and a reservoir containing a flowable substance. A capillary channel formed of one or more wicking or capillary members extends through at least a portion of the oral care implement to deliver flowable substance(s) through one or more outlets via capillary action. In one embodiment, the rate of fluid flow through the capillary channel is different in at least a first flow section than in a second flow section. In another embodiment, the rate of flow between flow sections of the wicking member is different than in at least one of the flow sections. A variety of flowable substances can be administered for therapeutic, hygienic, and/or other benefits, such as fresh breath, tooth whitening, tooth sensitivity, plaque and/or tartar control, or producing sensations of heat, cool, or tingling.