Epidural anesthesia is a regional anesthesia that blocks pain in a particular region of the body. The goal of an epidural is to provide analgesia, or pain relief, rather than anesthesia, which leads to total lack of feeling. Epidurals block the nerve impulses from the lower spinal segments. This results in decreased sensation in the lower half of the body.
Though it may be produced slightly differently, tamari is basically a type of soy sauce that is made without wheat. In other words, tamari is a type of soy sauce, but it is not exactly the same as regular soy sauce. See also: Shop online for tamari.
In fact, tamari soy sauce is distinct from other types of shoyu and soy sauces from other regions, and it cannot be interchanged with sauces like usukuchi shoyu or Indonesian kecap. Tamari is rich, with a tangy flavor from the miso fermentation process, and it is one of the darkest forms of Japanese shoyu.