With a wide range of uses, and several health and medical benefits, hygienic, and cleaning uses, baking soda is an inexpensive and useful compound to have in the house. However, like any other compound that can have health implications, the usage of baking soda for health benefits or medical treatments should be discussed with a physician beforehand. It is safe to use it for the previously mentioned hygienic purposes as long as it is not ingested in large quantities.
More scientific studies on the effectiveness of baking soda in helping to treat kidney illnesses and other kidney related problems would need to be performed, but it seems that this is a promising avenue for the another medical application of baking soda.
There is no doubt, however, that baking soda is effective for treating heartburn and indigestion. In the case of topical skin related treatments, it may be better to use baking soda as a complement to prescription or over the counter products for treatment, as long as there are no interactions. Baking soda is useful and safe for mouth hygiene, and it can be used as a mouthwash or as a paste for cleaning teeth.