HerbAprin tincture contains herbs traditionally known to help dogs & horses relax, sleep and heal. It is an ideal companion to Inflapotion™ and the perfect choice for relieving discomfort safely and effectively. HerbAprin also contains herbs known to have mild sedative type properties, so they can rest more comfortably.. If your four-legged friend has acute discomfort following surgery, injury, or illness or simply just works or plays too hard, HerbAprin can help.