Will the ProDentim probiotic supplement work just as well if a tablet is chewed once every other day instead of the recommended daily use?

This is quite true and, in fact, for some may only be needed for a period of time in order to establish a good balance of microflora in the oral cavity to promote dental health. That cannot be predicted and will vary widely among users of the product. So what this speaks to is, at the outset as you are starting from behind, it would be prudent to use the product on a daily basis as recommended for a period of time. This too, will vary in its necessity and then, at some point use can be tapered down to an occasional reinforcement without great danger of undoing the benefit. There are many potential scenarios, as you are thinking as we speak, about having an occasional revisiting to use a tablet daily for a week, for example, and doing so several times a year. That is a strategy that would work for a majority of individuals to keep up the microflora in proper balance. There are some who will need more frequent exposure, so that is important to keep in mind as well. One size does not fit all here, but given the nature of the product this is more a question of some being better than none, if money is the overriding factor limiting choices.