Arnica montana, radix

Description:Acts especially on the muscular, serous, and cellular tissues and tendons, producing conditions quite similar to those resulting from injuries, falls, blows, etc., both external and internal, even to traumatic fever and septicemia, by purulent infection.
It also acts upon the capillaries, stimulating their absorbent power, especially after having been weakened by external injuries.
Through the motor nerves it affects the cerebro-spinal axis, causing spinal irritation and its attendant evils, paralysis, etc.
In the digestive tract it produces irritation and a low inflammatory condition, giving rise on the one hand to dyspeptic symptoms, and on the other to typhoid conditions.A bruised, sore feeling is its leading peculiarity.