text: If it's confirmed that this is a pulled muscle, go out quickly and buy a tube of arnica gel, preferably A.Vogel or Roberts. These are the ones available at health shops and better chemists. I don't find the Weleda so effective. \n\nAs you rub it in to the pulled muscle the skin feels very cold and within five minutes there is quite a dramatic reduction of pain. Keep massaging it in a few times a day and the pain will go quicker than if arnica not used. Arnica gel is used by physios on sports injuries to muscles.