Overdoses of willow bark may cause skin rash, stomach inflammation/irritation, nausea, vomiting, kidney inflammation, and tinnitus (ringing in the ears).
South Dakota, a state in the north central continental United States, is known as the Mount Rushmore State. This stems from the presence of the Mount Rushmore National Memorial near the city of Keystone in western South Dakota.
South Dakota is listed as the 40th US State. South Dakota and North Dakota were admitted into the union at the same time.