1. anti-bacterial anti-virus : has a wider antibacterial effect, but the protein can be inactivated in the body . In vitro experiments showed that antiviral activity against vaccinia and adenovirus strong inhibition , followed by polio and parainfluenza viruses .
2. anti- snake venom : caffeic acid 3 mg dose completely inhibited by 20 mg ring tail snake venom phosphodiesterase , as anti- venom agents .
3. Other effects : oral or intraperitoneal injection , the rats of caffeic acid can increase the excitability ; oral , human stomach can increase the secretion of hydrochloric acid , and can slow pulse ; can enhance the tension of the uterus , this effect can be antagonized by papaverine , and atropine is not affected; increase bile secretion in rats