Since restoring its original formula in 1982, Unker’s Therapeutic Products has manufactured topical relief salves and sprays for aches, pains, colds and coughs in Upton, Wyoming. The company traces the formula’s roots to the early 1900s and says it has changed its labels over the years, but not its recipes. Unker’s products are sold through more than 500 independent retailers, markets and wellness stores across the United States and Canada.